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Universal Diesel M 12 Operator's Manual




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MARINE DIESEL
OWNERS MANUAL
MODELS
M212 M320 M430 M2SXP
M35 M30 M40 M50
M2 M5 M8 MO M5
PART NUMBER
WESTERBEKE
j MYLES STANDISH INDUSTRIAL PARK
150 JOHN HANCOCK ROAD TAUNTON MA 027807319
MARINE DIESEL
OWNERS MANUAL
MODELS
M212 M320 M430 M2SXP
M35 M30 M40 M50
M2 M5 M8 MO M5
PART NUMBER
WESTERBEKE
j MYLES STANDISH INDUSTRIAL PARK
150 JOHN HANCOCK ROAD TAUNTON MA 027807319
MODEL CROSS REFERENCE GUIDE PAST 10 PRESENT
ORIGINAL UPDATE 19871988 19881989
M12 M212
5411 M15
M18 M320
5416 M20
M430
5421 M25 M25 M25XP
5424 M30 M30
5432 M40 M40
5444 M50 MSO
Discontinued
Replaced With New Model
Improved
New Mini Series
New In 1986 M25XP
New In 1987 M35
New In 1988 M212 M320 M430
PAGE
of Contents 3
Caution 45
General Information For Starting
78
Before Starting 8
Starting Engine 9 10
Engine Breakin and General Running 10
Stopping the Engine Lever
Panel 11 12
Wiring Diagram Engine for Storage
14 16
Preparing Engine for Spring Service 17 of Engine
19
Diesel Valve Timing 20
Adjusting Fuel Timing 20 Device Adjustment
21 22
Fuel System 22 23
Fuel Bleeding 24 25
Oil Filter Change 25 26
Sea Water Pump and Impeller Replacement 26 21
Pump Impeller and Parts Diagram 21 30
Model 15 Sea Water Circulation Diagram 31 32
Model 12 18 20 25 25Xp 30 40 50 Water
Fresh Water Circulation Diagram 33 34
Hurth Transmission 35 40
Periodic Service Chart for Engine 41
Marine Engine Warranty Limited 42 43
Engine 44 69
FILL OUT AND MAIL YOUR WARRANTY CARD NOW
CAUTION
Your Universal Diesel engine is supplied with top quality factory tested components These will not
however replace safe practices in the handling of fuel and the use of your engine The following pro
cedures if observed will help insure safe operation and prevent damage to your engine and PROCEDURES
KEEP THE ENGINE AND ENGINE COMPARTMENT CLEAN AND FREE FROM OILY WASTE
AND CLOTHS
KEEP FUEL AND OIL OUT OF BILGE
PERIODICALLY INSPECT THE ENGINE EXHAUST SYSTEM FUEL LINES AND WATER CON
NECTIONS FOR LEAKS
DO NOT OVERFILL THE FUEL SUPPLY TANK THIS MAY CAUSE RAW FUEL TO AC
CUMULATE IN THE BILGE
THE BLOWER SHOULD ALWAYS BE OPERATED FOR APPROXIMATELY FOUR 4 MINUTES
PRIOR TO STARTING THE ENGINE SO THAT THE ENGINE COMPARTMENT WILL BE COM
PLETELY VENTILATED IF BLOWER IS THE ENGINE IS SHIPPED FROM THE FACTORY WITH THE CRANKCASE EMPTY
THE CORRECT GRADE AND AMOUNT OF OIL MUST BE ADDED BEFORE OPERATION SEE
AND FILL TO FULL MARK ON DIPSTICK
THE TRANSMISSION IS FILLED BEFORE SHIPMENT BUT THE OIL LEVEL MUST BE CHECK
ED BEFORE OPERATION SEE PAGE TO PREVENT ALTERNATOR DAMAGE DO NOT OPEN OR SWITCH BATTERY CIRCUITS
WHILE THE ENGINE IS THE ENGINE
DO NOT RACE THE ENGINE THIS PRACTICE MAY CAUSE SERIOUS LEVER
DO NOT USE THE DECOMPRESSION LEVER TO STOP THE ENGINE THIS WILL CAUSE
SERIOUS DAMAGE TO THE EXHAUST VALVES MODELS M12 M210 M320 M430 ANd M3S
DO NOT HAVE A DECOMPRESSION AND UPKEEP
IT IS THE OWNERS OR OPERATORS TO PERFORM ALL NECESSARY
PREVENTIVE MAINTENANCE AND UPKEEp AT LEAST SEMI ANNUALLY
WATER COOLING SYSTEM ALL MODELS EXCEPT M15
THIS SYSTEM MUST BE FILLED SLOWLY WITH A SOISO BLEND OF WATER AND A GOOD
GRADE OF PREMIUM ANTIFREEZE THE COOLANT BLEND MAY CHANGE BASED ON
CLIMATIC CONDITION IN YOUR AREA OR YOU MAY ALSO USE CLEAN FRESH WATER WITH
AN ANTI RUST INHIBITOR DO NOT USE PURE ANTIFREEZE AFTER ENGINE HAS REACHED
OPERATING TEMPERATURE IT MAY REQUIRE ADDING MORE COOLANT AS THE AIR IS
PURGED FROM THE SYSTEM IF ENGINE OVERHEATS RECHECK LEVEL IF HOT WATER
HEATER IS INSTALLED ALL AIR MUST BE REMOVED FROM THE LINES AND SYSTEM TO
PREVENT OVERHEATING USUALLY BY MEANS OF AN ADDED BLEED VALVE IN HEATER LINE
OR EXPANSION TANK IN THE SYSTEM Model 15
THE M15 WHICH IS COOLED DIRECTLY BY SEA WATER USES A RECIRCULATING SYSTEM
WHICH DISCHARGES THE WATER AND VAPOR OVERBOARD WITH THE EXHAUST SYSTEM
IT SHOULD BE INSTALLED WITHOUT SHARP BENDS AND SHOULD BE DESIGNED TO DRAIN
ANY WATER AWAY FROM THE ENGINE THE WATER INLET TO EXHAUST LINE MUST BE
LOCATED TO PREVENT WATER FROM BACKING UP INTO THE ENGINElF A WATERLIFT
CAN TYPE MUFFLER IS USED BE SURE IT IS LARGE ENOUGH TO HOLD APPROXIMATE
LY 3 TIMES THE AMOUNT OF WATER THAT MAY BE IN THE LINES WHEN THE ENGINE IS
SHUT DOWN SO THAT WATER WONT BACK UP INTO THE ENGINE
CAUTION
PROLONGED CRANKING OF THE ENGINE WITH FAILURE TO START CAN FILL THE EX
HAUST SYSTEM WITH SEA WATER CAUSING IT TO BACK UP INTO THE ENGINE CAUSING
SERIOUS DAMAGE TO THE ENGINE WHEN CRANKING IS STOPPED
CHECK COMPLETE SYSTEM AT LEAST MONTHLY FOR STOPPING ENGINE
BE SURE TO CAREFULLY READ INSTRUCTIONS ON HOW TO START AND STOP YOUR
ENGINE BEFORE STARTING SUPPLY
DO NOT RUN ENGINE OUT OF FUEL OR REBLEEDING OF YOUR FUEL SYSTEM WILL BE
REQUIRED
FUEL MUST BE FREE OF ANY MOISTURE OR IMPURITIES CHECK CAREFULLY MOISTURE
CAN SERIOUSLY DAMAGE PUMP AND NOZZLES AN ADDITIVE SHOULD BE USED AS
BACTERIA GROWTH CAN PREVENT GOOD RUNNING CONDITIONS CAUSING THE ENGINE
TO RUN ERRATIC OR LOSE MOTOR
CRANK THE ENGINE FOR ONLY 10 SECONDS AND PAUSE FOR 10 SECONDS REPEAT UNTIL
ENGINE STARTS NEVER CRANK ENGINE LONGER THAN 20 SECONDS WITHOUT A PAUSE
TO PERMIT STARTER TO COOL DOWN USE OF GLOW PLUGS WILL AID IN STARTING
REDUCE CRANKING TIME AND INCREASE BATTERY LIFE ENGINE SOLD AFTER EARLY 1983
REQUIRES GLOW PLUG BUTTON TO BE ENGAGED IN ORDER FOR STARTER BUTTON TO
ENERGIZE STARTER
GENERAL Universal Diesel engines are four stroke engines They are designed with special swirl combustion
chambers balanced crankshaft system for minimum vibration and noise SYSTEM All Models Except M15
Engines are fresh water cooled employing a rubber impeller sea water pump moving sea water
through a heat exchanger thereby lowering the temperature of the fresh water coolant A fresh
water coolant supply is maintained in the expansion tank which is an integral part of the exhaust
manifold Coolant level should be checked at regular intervals and at least once each season for
leakage deposits and general condition Always close the sea water cock before attempting any
work on the coolant system Note the make of sea water pump for service parts under general
information
COOLING SYSTEM Model M15
Engine is sea water cooled having a rubber impeller sea water pump with a temperature control thermostat The mixing tee is to be located below the
engine and sea water
level to prevent air from entering the system causing SYSTEM
Engines are pressure lubricated and use replaceable oil filters which should be changed SYSTEM
Ttle fuel system utilizes either an electric on all current models or mechanical fuel pump on early
M15 M40 fuel filter fuel injection pump with injectors and necessary fuel lines Unused fuel
coming from the injector nozzles is returned to the top of the fuel supply tank through a fuel return
SYSTEM
All models are equipped with a 12 volt starter and a 51 amp alternator Battery cable connections
as well as all other electrical connections should be checked regularly The Vbelt driving the alter
nator and water pump should have finger pressure deflection of approximately 12
1 Battery ground cable should be connected to a component or cylinder block which is
constructed of cast iron or steel
2 Do not connect to the transmission bell housing or front timing cover case
3 It is recommended all ground connections are secure and properly coated to prevent corro
sion or improper grounding Check connection 6
GENERAL CARE
If the boat is left afloat for periods of a month or more the engine should be started at least every
14 days to prevent internal corrosion
Regularly spray external unpainted surfaces and exposed unpainted electrical equipment with a
corrosion and moisture protective ALIGNMENT TO SHAFT COUPLING
It is the of the dealer or yard to properly align the engine and shaft to within 002 to
004 inches The boat must be in the water when this is done Alignment is not the of Universal Motors If not done properly damage to shaft and
engine can occur usually vibration
is present if alignment is off
HAVE YOU MAILED IN YOUR WARRANTY CARD A WARRANTY CARD MUST BE ON FILE FOR
WARRANTY WORK APPROVAL OR PROOF OF PURCHASE DATE
PREPARATIONS FOR STARTING YOUR NEW DIESEL ENGINE
For long dependable service become familiar with the operating requirements of your engine
All Universal Diesel engines are completely factory tested under load conditions before shipment
In preparation for starting engine oil must be added to the crankcase Refer to oil type and capacity Recheck oil level on dipstick it should be to
full mark do not checking oil remove dipstick wait 15 seconds then recheck
The oil level should be checked before the first startup each day Dipstick has high and low markings
Oil levels either above or below these marks should never be allowed Oil is put into the engine by
removing the screw cap on the top of the rocker arm cover Fill the crankcase with oil to the upper
mark on the dipstick and securely replace the filler cap
THE TRANSMISSION IS SHIPPED WITH OIL BUT SHOULD BE CHECKED PRIOR TO to specification of oil type and capacity Recheck oil level on dipstick DIPSTICK
TO BE IN
SERTED ONLY DO NOT SCREW IN See transmission instructions for additional information FILL
TO INDENTED RING ON DIPSTICK only
An unrestricted water supply must be provided to the engine Use a minimum of 12 through hull fit
ting Locate the scoop where it will have a full supply of water at all times regardless of running posi
tion or rough seas A sea cock or gate valve is necessary at the water inlet point The water pump has
a 38 NPT suction inlet and the heat exchanger has a 38 NPT water outlet Use a hose for the suction side A water strainer installed in the line ahead
of the water pump aids
in preventing clogging of the cooling system The exhaust pipe is 114 NPT on all models except
M50 which is 1112 NPT
The fresh water manifold on all models except M15 should be filled slowly to the bottom of the filler
cap A 5050 mixture of fresh water and antifreeze solution is acceptable as an all weather the need to drain the fresh water system for cold weather
operation or storage A may change based on climatic conditions in your area The rust preventive will aid in reducing
rust formation if no antifreeze is used
Model 15 being sea water cooled draws its water directly from the sea filling the engine system the hot water overboard into the exhaust line
Be sure water pump is lubricated by turning grease cup if provided on your engine clockwise 112 turn
at 30 hour intervals Pumps with no grease cup do not require shifting controls must allow the
clutch to engage in the full forward and reverse or partial engagement will cause undue wear The transmission should always be in the
neutral position before starting the engine Also the transmission shifter arm must be at a 900 angle to
the transmission bracket cable when in neutral
DO NOT LEAVE GEAR IN FORWARD DURING SAILING WITH ENGINE OFF
On all models the fuel line must be connected from the fuel tank to the electric fuel pump then to the
fuel filter On Model 15 connect directly to the fuel supply line A fuel return line must be the injector nozzles to the top of the fuel tank so that
the unused fuel can blow back into the fuel
tank IT IS VERY IMPORTANT TO KEEP ALL FUEL LINES FREE OF DUST AND BLOW OUT LINES BEFORE fuel supply and make sure fuel lines are tight Any fuel
leakage must be corrected before any
attempt to start the engine If fuel line leaks are discovered or any work is done on the fuel system it
may be necessary to bleed the fuel system before the engine will start Refer to bleeding this manual if that procedure becomes all electrical
connections A wiring diagram is included in this manual GROUND IS NEGATIVE
and the ground terminal should be connected to the engine block Make sure it is metal to metal con
tact and securely tightened Also check the battery to be sure all cells are covered with electrolyte Do
not allow flames or sparks near battery openings Gases produced during normal battery charging BEFORE STARTING
THE ENGINE
1 HAVE SAFETY EQUIPMENT ON BOARD AND KNOW HOW TO USE IT
2 VENTILATE ENGINE COMPARTMENT BY OPENING HATCHES OR BLOWER IF INSTALLED
3 CHECK CRANKCASE OIL LEVEL ON DIPSTICK SHOULD BE AT FULL MARK
4 CHECK TRANSMISSION OIL LEVEL Refer to transmission servicing
5 CHECK FRESH WATER LEVEL IN MANIFOLD OR EXPANSION TANK IF INSTALLED ON ALL
MODELS EXCEPT M15
6 CHECK FUEL SUPPLY
7 FUEL SHUTOFF VALVE SHOULD BE OPEN
8 SEA WATER VALVE TO WATER PUMP MUST BE OPEN
9 EXHAUST SHUTOFF VALVE MUST BE OPEN OR ENDPLUG REMOVED IF INSTALLED
10 REMOVE ANY OBSTRUCTION CAUGHT IN AIR INTAKE SCREEN
11 TURN MAIN BATTERY SWITCH ON
12 TURN IGNITION KEY TO ON POSITION TO ENERGIZE ELECTRIC FUEL PUMP ON ALL
MODELS TO BLEED THE FUEL LINES AND FILTER THIS IS USUALLY COMPLETED BY THE
BOATBUILDER AT THE TIME THE ENGINE IS TESTED AND SHOULD NOT BE REQUIRED BY
STARTING THE ENGINE
1 Have safety equipment on board and know how to use it
2 Ventilate engine compartment by opening hatches
3 Be sure engine compartment is thoroughly ventilated Run blowers for 4 minutes before starting
engine if installed
4 Turn blowers off after starting or before starting to eliminate excessive battery drain if preferred
5 Transmission lever should be in neutral Center Position
6 Place throttle lever at 13 open position
7 Turn key to ON position to energize fuel pump glow plug and oil pressure light If your panel
uses a key switch start go tOh9
8 Press Glow Plug button for 30 to 60 seconds depending on the outside temperature
Continue to hold glow plug button while pressing Start button to crank engine Release both
buttons immediately after engine starts Go to 11
NOTE YOU MUST HOLD GLOW PLUG BUTTON IN TO ENERGIZE THE STARTER BUTTON
FOR CRANKING ENGINE
PANELS WITH KEY SWITCH START
9 Activate Glow Plug switch for 30 seconds to 1 minute depending on the outside air
temperature It may be necessary to hold the glow plugs on during the time the engine is cranked
in very cold outside Turn key to full right position to crank engine Release key immediately after start MAKE SURE
THE KEY RETURNS TO THE ON POSITION
NOTE When cranking engine only crank engine for 10 seconds and pause for 10 seconds
Repeat until engine starts See Caution printed on Starter Motor
11 Check oil pressure light Should go out after engine starts
12 Ammeter should indicate Charge depending on battery If you have a voltmeter in place of an ammeter it should read 125 to 145 volts indicating
alter
nator is working
13 Check cooling system Make sure water pump is operating by checking for water coming out of
exhaust pipe with exhaust gases Temperature on gauge should gradually increase to 165F to
195F on all models except M15 Temperature on Model 15 should read between 135F and
155F
14 If oil pressure light does not go out or no water overboard or temperature is not normal STOP
ENGINE AT ONCE Recheck all items listed to correct problem
15 If all indications are normal after startup continue to run engine for about 10 minutes to be sure
all systems remain normal and operating temperature is With boat still SECURED to mooring and throttle reduced to idle check transmission operation
shifting from neutral to forward to neutral to reverse to neutral Make sure no lines or obstruc
tions are near the Stop engine after above check out has been accomplished and recheck oil and water levels
CAUTION
COOLING SYSTEM IS UNDER PRESSURE AFTER OPERATION REMOVE CAP
SLOWLY COOLANT WILL BE VERY HOT USE A RAG YOU COULD GET
BURNED
ENGINE BREAKIN AND GENERAL RUNNING
1 Engine breakin period should be approximately 10 hours of operation at 75 of normal cruising
speed
2 On your trial cruise check the propeller shaft for abnormal vibration and engine mounts for
tightness Realignment of the propeller shaft may be required if noticeable vibration is present
Boat should be in the water when checking alignment Universal is not responsible for shaft align
ment or locking nuts on mounts coming loose
3 After the breakin period an average cruising speed for a sail boat installation is about 80 of the
maximum engine speed obtainable to achieve hull speed
4 Periodically check oil light indicators ammeter temperature and exhaust water for normal opera
tion this is the operators When shifting transmission engine RPM should be reduced to idle then shift transmission firm
ly from one direction to another A slight pause in neutral will allow propeller to slow and add life
to transmission In adverse conditions due to winds sea or higher RPMs it may be more difficult
to shift
STOPPING THE ENGINE
1 Place throttle in the idle position
2 Place transmission shift lever in neutral Center Leave engine idle for approximately 1 to 2 minutes for it to cool down
4 To stop engine on early Models 15 182030 40 hold throttle lever in the back position
against the spring loading until the engine stops Then release the throttle from the stop position
and throttle will return to the idle position Repeat if engine does not stop the first time Models
M12 M25 M212 M320 M430 M25XP M35 M40 MSO have a separate stop lever for shut
ting the engine down All newer models have a shut down lever on panel pull
lever to stop engines then tum off key The newer models have a separate shut down lever
5 Tum key to the OFF position to shut off the electric fuel pump and accessories If not in
OFF position it may drain the Open battery master switch ONLY AFTER ENGINE HAS COME TO A COMPLETE STOP
This will prevent alternator and regulator damage
7 00 NOT USE THE DECOMPRESSION LEVER TO STOP THE ENGINE This practice could
seriously damage the exhaust valves
8 You may want to close the fuel and sea water valves after stopping the engine If so BE SURE
TO REOPEN THEM BEFORE RESTARTING FAILURE TO 00 SO COULD CAUSE ENGINE
TO OVERHEAT AND DAMAGE TO THE PUMP IMPELLER OR FUEL LINES TO BECOME AIR
LOCKED THIS SITUATION WOULD THEN REQUIRE BLEEDING OF THE FUEL SYSTEM
BEFORE RESTARTING ANDIOR REPLACING THE PUMP 10
DECOMPRESSION LEVER
A decompression lever fitted to the engine enables the user to start the engine easier when it is ex
tremely cold when the battery is low or when bleeding the fuel system There is no on Models 12 M212 M320 M430 and M35
CAUTION
THE DECOMPRESSION LEVER MUST NOT BE USED TO STOP THE ENGINE
EXCEPT IN EMERGENCY SITUATIONS SUCH AS RUN AWAY ENGINE OR
THROTILE DAMAGE AS SERIOUS DAMAGE CAN BE DONE TO THE EX
HAUST VALVES
When the battery is weak or starting in extremely cold weather
In most cases decompression is not necessary
Models with Glow and Start Buttons and 1 Pull decompression lever to release position
2 Turn ignition switch to ON position
3 Hold Glow Plug Button in for 30 to 60 seconds then press Start Button to crank engine
Models after early 1983
4 After 3 to 5 seconds when the engine has gained momentum return decompression lever to
its original position Engine should now start
Models With Start On Key Switch
1 Pull decompression lever to release position
2 Turn key to ON position
3 Energize glow plugs for 30 to 60 seconds
4 Turn key to start position to crank engine
5 After 3 to 5 seconds when the engine has gained momentum return decompression lever to
its original position Engine should now start
INSTRUMENT PANEL
Refer to the instrument panel drawing when becoming familiar with the start up procedure or any
general operating requirements of the engine
The Blower switch if equipped with engine will remain in the ON position until it is turned off
The Glow Plug or preheat switch requires continuous pressure for whatever time it is necessary to
activate the glow plug
The Oil Pressure light will come on when starting the engine but should go out after the A low oil level in the engine crankcase or a serious oil
leakage should be suspected if the light
comes on at any other time during engine style key switch is a four position selector type Far left at the far right moving clockwise The key will
spring return to the ON position when
released after start up
New style key switch is ONOFF only glow and start switches are push button type Both must be
engaged to start engine
Operating temperature is approximately 165F to 195F on all models except M15 is approximately 135F to 155F on Model 15 The ammeter should indicate
the charge re
quired based on equipment and battery are three 3 New style Universal panels
1 Standard Includes temp and AMP gauges oil light onoff key switch glow plug and start
300680 buttons
2 Deluxe Same as Standard plus a tachometer with 4 selection stations on the back To be
300685 set to correct Model for accurate readings
3 Custom Same as Standard plus a meter with Model selection station on
300690 back and a lowoil hightemp audio alarm with red light
KEY START IUNIVERSAL I
IUNIVERSAL I CD
STANDARD DEWXE
BUTTON START PANELS
Replace With Panels Below
UNIVERSAL G CD
STANDARD
UNIVERSAL CD UNIVERSAL CD
DEWXE CUSTOM
300685 300690
FIGURE 1
WIRING PO cyI
o iii
Glow Plugs 1 per tyI
0 j
FIGURE 2
PREPARING THE ENGINE FOR WINTER STORAGE OR preparation of your engine for storage will avoid damage and minimize expense when your engine in It is
recommended that your engine be winterized by an authorized Universal mechanic or at
least a trained mechanic familiar with the engine and its SYSTEM
1 Before boat is lifted out of the water run the engine until operating temperature is attained
2 Stop engine after warm up and remove crankcase oil through the dipstick hole using hand
sump pump designed for that purpose Replace dipstick after oil has been removed or
through oil drain hose if one is provided The newer engines have a drain hose for changing
crankcase oil
3 Refill crankcase with new oil and replace filler cap
4 Run engine again for about 5 minutes to distribute a protective film of clean oil to act as a
rust preventive during See transmission 1 Fill transmission completely with type AFT or DEXRON II transmission oil You may just add
to the existing oil or drain the old oil and completely refill with new transmission oil
2 Be sure both drain and filler plugs are tight after draining or adding to the oil in the
3 Transmission is now ready for WATER COOLING SYSTEM All Models Except M15
OPTION 1 Dry Storage
1 To drain sea water system disconnect hose end at sea water pump that comes from heat
exchanger
Lower free end of hose to a pOint approximately level with the front engine mount This will
allow the sea water to drain from heat exchanger and hoses
2 Loosen the 4 or 6 screws on the sea water pump cover plate Tap the plate lightly to loosen
it this will allow pump to drain
3 After pump has drained apply a light coat of lubrication to protect pump and impeller during
storage and replace cover
4 Drin exhaust muffler and system 2 Wet Storage
Repeat Steps 1 2 and 4 of Option 1
1 Disconnect sea water inlet hose at sea cock shut off valve BE SURE SEA INLET VALVE IS
CLOSED FIRST
2 After the inlet hose has stopped draining place hose into a 2 Gallon container of an
tifreeze Start engine and run the two gallons on antifreeze through the system until the an
tifreeze comes out the exhaust outlet stop engine and check item 4 Make sure you do not
run out of antifreeze while engine is running
3 You should now have antifreeze in sea water pump hoses heat exchanger and exhaust
system
4 If aqualift or pot type muffler is used it is recommended to drain prior to pumping anti
freeze thru system and afterwards to prevent coolant from backing up into the engine
SEA WATER COOLING SYSTEM Model M15
OPTION 1
1 Open the cylinder block drain cock on the side of the block where hose from water pump
enters and drain
2 Loosen water pump cover plate allowing pump to drain lubricate and replace cover
3 Remove drain plug or rear bottom of exhaust manifold and drain
4 When boat is out of water inlet lines to pump and thermostat will drain Close sea cock
valve when completed for storage
5 If aqualift or can type muffler is used it is recommended to drain muffler and lines of water
OPTION 2 With engine at operating temperature and stopped
1 Shut off sea cock valve
2 Remove hose at sea cock Let water drain from hose Place inlet hose into container of an
tifreeze with decompression lever on Crank engine over at 10 second intervals until an
tifreeze comes out exhaust outlet
3 If aqualift or can type muffler is used drain prior to pumping antifreeze thru system and
afterwards to prevent coolant from backing up into the engine
4 You may wish to do option 1 prior to 2 to insure all water is out of engine and exhaust
system
5 Replace hose to sea cock when complete Be sure sea valve is closed
6 Antifreeze will aid in coating inside of the engine reducing rusting
TO DRAIN FRESH WATER COOLING SYSTEM All Models Except M15
1 Remove pressure cap from manifold when engine is cool
2 Open drain cock located above oil filter to drain engine block and head cylinder
3 Open the inline drain petcock located below the alternator This will drain the manifold heat
exchanger and engine fresh water pump
4 Remove 18 pipe plug at lower rear of manifold to drain manifold separately
5 Close all drain valves and petcocks when draining has been completed
6 If antifreeze solution is used it is not necessary to drain the system each year providing you
have the correct mixture to prevent freezing during winter storage
EXHAUST SYSTEM
1 Exhaust pipes and muffler should be drained of sea water Allow the exhaust pipes to dry
out Seal exhaust pipe end to prevent entrance of moisture into the engine through exhaust
valves that are open
2 See Option 2 under Sea Water Cooling System appropriate for your model
3 All can type mufflers should be drained after any long periods of cranking as Sea Water
pump will fill the muffler causing water to backup and enter the SYSTEM
1 Remove battery and store it in a warm dry area
2 Protect other electrical parts against TANK
1 To protect against corrosion or moisture in the fuel supply tank either fill the tank with fuel
or drain completely and seal top securely for storage
2 A diesel additive is recommended to prevent bacterial growth in the You may want to completely cover the engine to provide additional
protection Care should be
taken when covering so that electrical connections are not loosened and that fuel lines are not
bent or YOU MAILED IN YOUR WARRANTY CARD A WARRANTY CARD MUST BE ON FILE FOR
WARRANTY WORK APPROVAL OR PROOF OF PURCHASE DATE
PREPARING ENGINE FOR SPRING of the engine should include all those items of maintenance necessary to permit operation of the engine A properly
serviced engine will give a full season of carefree pleasure
The amount of service needed will be determined by the storage procedure of the previous fall Refer
to the section of the manual covering initial start up of the SYSTEM
1 Drain oil from crankcase using hand sump pump through the dipstick hole or oil drain hose if
installed
2 Install new oil filter
3 Refill crankcase with recommended grade and amount of engine oil Fill to upper or full
mark on dipstick Do not overfill
4 Be sure filler cap is secure after filling crankcase and that no oil leaks are 1 If transmission was completely filled for winter storage
some oil will have to be removed to
attain the correct level in the 2 Check transmission oil level according to found in this manual
3 Be sure all plugs are secure and that no leaks are apparent The drain plug should be
checked regularly
CAUTION DO NOT CROSS THREAD THE DIPSTICK THREADS AS IT MAY REQUIRE
HOUSING WATER COOLING SYSTEM
1 Remove front cover of pump if system was drained for storage Inspect rubber impeller light
ly lubricate pump impeller replace gasket and cover securely when inspection and lubrica
tion have been completed
2 If impeller is not serviceable see instructions covering the replacement of the sea water
pump impeller in the maintenance section of this SYSTEM Model M15
On Model 15 make sure all plugs and hoses are replaced and secure Remove inlet hose on pump
and add about 314 oz of lube oil This will lubricate impeller when engine first starts until it picks up
sea WATER COOLING SYSTEM All Models Except M15
1 Inspect the heat exchanger and exhaust manifold for secure mounting and interior
cleanliness If system was filed with a 5050 water and antifreeze mixture for storage leaks
will be easier to detect than if the system was drained The coolant should be relatively clear
and should be free of scale or other foreign particles
2 If system was drained and inspection is satisfactory fill slowly with coolant and replace
pressure cap Recheck coolant level after engine has run and reached operating
temperature Use caution when removing cap when engine is hot you could get burnt
3 Use antifreeze or rust preventative in system to prevent rust
EXHAUST SYSTEM
1 Check all hoses and hose clamps for and security Any worn or damaged
hoses or clamps must be replaced before operation
2 Check all valves and remove all plugs before operation
3 Check complete system monthly for leaks make repairs as SYSTEM
1 Inspect all wiring terminals controls and switches for damage or corrosion
2 Install a fully charged battery and connect it correctly NEGATIVE GROUND Be careful to
not short across negative and positive SYSTEM
1 Fuel tank must be clean free of water and securely mounted If it was filled with fuel for
storage FUEL MUST BE CLEAN
2 Check fuel cap vent hose It must be open for unrestricted air venting
3 Fuel lines must be secure and all clamps and nuts tight Lines must not be leaking Fuel
system will require bleeding before operation if tank has been drained or filter has been
replaced See instructions covering fuel system All of the above items must be carefully checked if satisfactory operation is to be expected good
common sense will aid during servicing
Refer to the start up check list in this manual after above items have been checked and before at
tempting to start the engine so that the proper procedure may be followed In some cases other
add ons may require serviCing
WITH THE BOAT IN THE WATER check freedom of the propeller shaft in the bearings and
alignment of the propeller shaft with the engine Shaft alignment should not be more than 002 to
004 out at four pOints in one position at coupling flange and the same four pOints in the same
position when shaft and coupling is rotated 1800 from first check If propeller shaft is out of align
ment we strongly recommend that realignment be performed by a qualified mechanic familiar
with the Also it may be necessary to tighten the stuffing gland just enough to stop excessive leakage
along the shaft Excessive tightening will cause power loss and burned stuffing material A slight
seepage is necessary to lubricate the stuffing gland
Any problems arising from this preuse inspection requiring special tools or attention should be
referred to the boat dealer a Universal Dealer service center or a qualified diesel engine service
center
MAINTENANCE OF YOUR major repair work is done on the engine timing should not be INJECTION TIMING
Basic tools required A 10 MM Socket wrench
B 13 MM Socket wrench
C 17 MM Open end wrench
D 12 MM Box end wrench
E 27 MM Socket 1116
Engine firing order Two cylinder 1 2
Front V belt end
Three cylinder 1 2 3
Four cylinder 1342
1 Remove fuel lines from injector pump fittings on injector pump Tool C
2 Pull decompression lever so that it will remain in the decompression position No decompres
sion lever on Model12
3 Open throttle fully
4 Energize electric fuel pump and turn engine over with starter to ensure that fuel is coming
out of each injector pump opening Have clean rags around opening to soak up fuel
5 Wipe off any fuel on injector pump body and the top of each injector opening
6 Turn crankshaft over by hand being careful not to damage spline on end of crankshaft
Engine rotation will be clockwise STOP IMMEDIATELY at the first sign of fuel movement in
the injector pump fuel fitting for whichever injector pump is being checked No 1 injector
pump is the closest to the Vbelt end of the engine
7 Remove cover from flywheel timing mark inspection hold located inside of left engine mount
Tool B
8 Check alignment of mark on flywheel with the timing pointer on the wall of the inspection
hole The 1FI mark on the flywheel represents fuel injection of No1 represents No2 cylinder etc
9 If timing pointer and the flywheel marking 1FI is aligned then No1 cylinder is properly tim
ed for fuel injection and should require no adjustment The same will be true for No2 No 3
and No 4 cylinders if the above steps are followed
10 In order to determine if timing is off or if the injection pump is faulty it is necessary to
recheck the timing for each cylinder two or three times
11 If there are variations in repeatability in the alignment of pOinter and timing mark a faulty
fuel injector pump may be suspected
12 If timing marks repeat to same location but are off 316 or more above or below the pointer
this indicates that the engine must be retimed
If alignment of the timing mark is not within 316 above or below the pointer the above steps must be
taken to time the engine If the timing is found to be satisfactory then reconnect all fuel lines and fit
tings and tighten The fuel system must be bled beforehthe engine will operate properly See fuel
bleeding instructions on page 28
DIESEL VALVE ADJUSTMENT
Valve clearance
M12M212 1518 07
M25XP35 M320 M430 0145 0185 mm
Valve Clearance
M20304050 07 009
018 022 mm
with engine cOld
Intake valve 200 B TDC
Intake valve closes 450 A BDC
FIGURE 3
Exhaust valve opens 500 B OF VALVE CLEARANCE Exhaust valve 150 A TDC
Models 12 M212 15 18 Models 20 30 40 50
25 25Xp 35 M320 M430
e W
CD a
w w w
MODEL 12 MODELS 151825 MODELS 20304050
25XP 35
TIMING MARK LOCATIONS
INJECTOR PUMP SIDE
FIGURE 4
Turn crankshaft over by hand Clockwise being careful not to damage the spline on the end of the
shaft Turn until pointer aligns with timing mark 1TC on flywheel Figure 4A Check to make sure both
intake and exhaust valves on No1 cylinder are loose If not turn crankshaft one more complete revolu
tion to bring No 1 cylinder onto compression Valves can now be set on No 1 cylinder This procedure
is true for No 1 cylinder on all models To set the valves on the remaining cylinders follow the mat
ching diagrams above being sure that both intake and exhaust valves are loose at the before DO NOT use the timing marks 1FI 2FI etc These marks are
used for timing fuel only
ADJUSTING FUEL TIMING
Steps necessary for fuel timing
1 Remove air intake manifold so that the fuel injector pump can be removed without 2 Set throttle lever at full speed
3 Remove injector pump side cover This will enable you to visually check to insure that the fuel rack
pin jnside the pump properly aligns with the opening in the top of pump housing when being
removed to prevent binding or shearing of the pin This pin is critical to proper pump operation
and if damaged will require replacement of the complete pump
4 The injector pump internal unit can now be loosened and removed It may be necessary to remove
fuel lines from injector nozzles to aid in pump removal
5 There are several shims located just below the pump top plate which will be used to adjust the
timing These shims are 006 inch thick and are equal to 1V2 or approximately 316 of distance
on the circumference of the flywheel Addition of shims will retard the timing and removing shims
will advance the timing
6 If the mark on the flywheel is below the pointer the fuel is being injected sooner than required and
the fuel timing must be retarded Shims must be added until the timing marks are aligned The op
posite is true if the flywheel mark is above the pointer See figure 5
7 If at all possible it is better to operate the engine with the timing advance rather than retarded
8 Replace fuel injector pump making sure the fuel rack pin aligns with the housing opening and is
properly inserted into the slotted arm Tighten injector pump cover in place Reconnect fuel line
from fuel filter to pump Repeat steps 2 thru 12 on engine timing
9 If timing is satisfactory then reassemble Be certain that all plates covers fuel lines and connec
tions are tight and free of leaks so that safe operation may be expected when the engine is
started Clean engine Caution Be sure all fuel lines and connections are kept clean during adjusting to prevent fouling
of nozzles when FIGURE 5
SHIM DEVICE ADJUSTMENT on models which have decompression device must be adjusted every time the rocker arm cover is removed or tightened
1 Remove cover over flywheel timing mark inspection hole Tool B No decompression lever
on models 12 and 35
2 Turn crankshaft over by hand being careful not to damage the spline on end of crankshaft
until flywheel mark 1TC is aligned with the pointer on the wall of the inspection hole
3 Remove decompression covers from top of rocker arm cover over number 1 cylinder Tool
4 With the alignment of the pointer and flywheel mark 1TC the no 1 cylinder adjustment can now be 5 Pull and hold lever to full
decompression position
6 Working through the access hole loosen the lock nut with a wrench tool A and back the
adjusting screw off until no contact is made on the rocker arm Using screw driver
7 Now tum adjusting screw in until first contact is made continue to tum screw in 1 turn
8 Lock the screw in this position with the lock nut Observe the position of slot in screw prior
to locking nut recheck after tightening lock nut
9 The above stops are to be followed to adjust the decompression for all remaining cylinders
After aligning the respective flywheel marks 2TC 3TC etc Adjustments can be made as
described in steps 3 thru 7 above
10 After all necessary adjustments have been made be sure to replace and secure all access
hole covers and the flywheel inspection hole cover
DECOMPRESSION DEVICE
FIGURE 6
FUEL SYSTEM
The fuel system utilizes either an electric or mechanical fuel pump fuel filter fuel injection pump and fuel lines Any fuel not used by the injectors
is returned through fuel return lines from the
rear most nozzle to the top of the fuel supply tank
ALL MODELS AFTER 1986 HAVE ELECTRIC FUEL PUMPS
The canister type fuel filter should be changed each season before the engine is placed back in ser
vice or more often based on engine usage
The engine operates on No2 diesel fuel only and care should be taken to see that no water or dirt
enters the fuel fuel is very important to a smooth trouble free running engine Add a fuel additive to prevent
algae MAIL IN YOUR WARRANTY NOW
FUEL SYSTEM
Early M15 M40
FIGURE 7
BLEEDING THE FUEL SYSTEM
It will be necessary to bleed the fuel system to achieve a steady air free flow of fuel if any of the follow
ing have occured Models M12 M212 M320 and M430 have self bleeding fuel systems
1 Running out of fuel
2 If fuel shut off valve is left closed and engine runs out of fuel
3 Replacing fuel filter
4 Fuel injector nozzle or injector pump repair
5 After repairing or replacing any fuel line
6 Before putting engine back into service in the spring if fuel system has been drained
7 Replacement of electric or mechanical fuel pump
8 Any time air is permitted to enter the fuel sure to have some means available to catch or absorb any fuel escaping during the bleeding pro
cess so that it will not accumulate in the engine compartment or bilge
1 Be sure there is a sufficient supply of fuel in the fuel tank
2 Open the fuel shutoff valve at the tank
3 Start the electric fuel pump by turning the ignition key to the ON position on models 18
20 25 30 50 all models after 1986
4 Model 15 has a mechanical fuel pump Therefore with decompression on turn engine over
with starter Crank at 10 second intervals while doing steps 5 and 7
5 Slowly loosen the air bleed plug on the fuel filter letting air escape until an air free flow of
fuel is evident 1986 models see item 7
6 At this time tighten the air bleed plug on the filter
7 Slowly loosen the air bleed plug on the injector pump letting air escape until an air free flow
of fuel is evident Units with a self bleed return valve open for a short period then start
engine as soon as engine runs smooth close valve Model12 has continuous fuel bleeding
8 At this time tighten the air bleed plug or knurled knob on the injector pump
9 The fuel system should now be properly bled and ready for to starting instructions before attempting to start the engine after bleeding the fuel
system
CAUTION Excessive cranking with sea cock valve open can cause water accumulation in
the muffler and possibly back up into the engine Drain muffler as needed
FUEL injectors should be removed and taken to a qualified diesel engine repair center to be tested for
leakage and spray pattern if poor engine performance such as loss of power rough or uneven runn
ing sudden notice of dark exhaust or engine becomes hard to start
REMOVING INJECTORS
1 Clean the area around the injectors before removing
2 Loosen nuts holding fuel lines to injector pump and injector nozzle and remove fuel lines
fool C
3 Loosen nuts on return line adapters and remove adapters fool C
4 Loosen injectors using Tool E and remove INJECTORS
1 Check to be sure contact surfaces and area around injectors is clean
2 Replace injectors in the same cylinder from which they were removed
3 Torque required to properly seat the injectors will be between 43 and 58 ftlbs
4 Replace fuel return lines and secure nuts
S Replace all fuel lines and secure all nuts
6 After all injectors fuel lines and hoses have been replaced and are secured the fuel system
will have to be bled Refer to bleeding instructions in this manual P27
The fuel injection pump has been set at the factory and should need no adjustment Any apparent pro
blem with the pump should be referred to a qualified diesel mechanic or to a Universal Diesel dealer as
advised
NOTE NO WARRANTY COVERAGE WILL BE GRANTED IF ANY OF THE FACTORY SET
AND SEALED FUEL AND MAXIMUM RPM ADJUSTMENTS ARE ALTERED
OIL FILTER draining engine oil and before refilling with new oil the oil filter should be changed
1 Unscrew old filter If it will not loosen use a speCial oil filter removal tool
2 Take care to catch any escaping oil so that it will not accumulate in the engine 3 When installing new filter moisten the rubber seal with
oil screw new oil filter onto the
threaded shaft and tighten it Hand pressure is sufficient to tighten the filter
4 Refill the crankcase with the correct grade and amount of oil as indicated by the full mark on
dipstick
S Start the engine according to the starting procedure in this manual Run only long enough to
check for any oil leaks and stop engine
6 The oil level will have dropped by the amount of oil which enters the oil filter and by the
amount which has distributed around the engine
7 After engine has stopped and the oil level allowed to settle recheck the oil level and fill as
WBE OIL FILTER
FIGURE 8
UNIVERSAL RECOMMENDS THAT YOU USE FACTORY REPLACEMENT FILTERS THE USE OF
OTHERS MAY VOID THE ENGINE WATER PUMP
Your engine is equipped with a rubber impeller type sea water pump
CAUTION DO NOT RUN PUMP DRY AT ANY TIME OR YOU WILL DAMAGE THE IMPELLER
CAUSING ENGINE TO can use methyl alcohol based antifreeze compounds such as Zerex Shell Zone Pyro and OF SEA WATER PUMP IMPELLER
1 Be sure engine is stopped Turn off sea water inlet valve
2 Loosen and remove the pump cover screws
3 Tap cover on side to loosen being careful not to damage cover gasket and remove cover
4 At this time be careful not to pull the pump shaft forward or out of its present position If the
shaft does come forward during the changing of impeller it will be necessary to remove
complete pump
5 Remove the snap ring located on the end of shaft in center of impeller with shaft held in
place
6 The impeller can now be pulled off the pump shaft Be sure to hold shaft in place with a
screwdriver or etc when removing the impeller
7 Replace with the new impeller by rotating You can lubricate impeller with vaseline or oil
prior to installing This will also prevent burning of new impeller when first starting engine
8 Replace snap ring being sure it is in the groove all the way around
9 Replace gasket and cover oil inside of cover
10 Replace the cover screws and tighten evenly
11 Open sea water inlet valve check for leaks
12 Engine can now be started check engine 26
NOTE IF DURING IMPELLER REPLACEMENT THE PUMP SHAFT CAME FORWARD IT
COULD HAVE COME OUT OF THE GROOVE AND DRIVE ADAPTOR IF SO YOU MUST COM
PLETE THE FOLLOWING NOTE ON NEWER UNITS WITHOUT A MOUNTING SPACER BET
WEEN THE PUMP AND ENGINE BLOCK YOU DO NOT HAVE A DRIVE ADAPTOR TO BE CON
CERNED ABOUT HOWEVER YOU MUST ALIGN THE SHAFT TANG AND THE DRIVE
GROOVE WHEN REINSTALLING THE PROPELLER SHAFT
1 Loosen and remove the two capscrews holding the pump body to engine
2 Slowly move pump away from engine as the adaptor will come out
3 Complete the replacement of impeller as noted above
4 The pump shaft will now be protruding through the body mounting flange
5 Place the adaptor on to the pump shaft aligning the pin on the groove On later models this
may not be present the pump may mount direct to engine block
6 Align the slot on the other side of adaptor with the drive shaft in engine and place pump on
engine
7 Hold in place and start the two mounting capscrews TIGHTEN FINGER TIGHT SO PUMP
IS FREE TO MOVE AND ALIGN ITSELF ON 1987 MODELS THE PUMP HAS A PILOT
FOR SELF ALIGNING JUST MOUNT AND TIGHTEN
8 Open sea water valve and start engine at idle This will align pump to the drive and adaptor
9 Stop engine now tighten capscrews BE VERY CAREFUL DUE TO VBELT MOVING ON FRONT OF ENGINE
10 Feel the bearings to make sure they are not hot they are located in the center of pump
body
11 Alignment of pump can also be accomplished by turning engine over with the starter while
decompression lever is in the open position approximately 5 to 10 revolutions Release
starter button and decompression lever tighten water pump THERE ARE TWO TYPES OF SEA WATERRUBBER IMPELLER PUMPS USED ORBER
DORFER PUMP HAS 4 SCREWS SECURING COVER TO PUMP BODY AND SHERWOOD
PUMP WHICH HAS 6 SCREWS SECURING COVER TO PUMP BODY NOTE WHICH PUMP
YOU HAVE ON COVER OF THIS MANUAL IT IS RECOMMENDED TO HAVE A SPARE IM
PELLER AND COVER GASKET ON BOARD AT ALL IMPELLER NO 295628 COVER GASKET NO IMPELLER NO 287439 COVER
GASKET NO DO NOT RUN PUMPS DRY OR WITH SEA INLET VALVE CLOSED LACK OF
WATER WILL CAUSE EXCESSIVE HEAT BUILD UP DAMAGING OR DESTROYING THE RUB
BER IMPELLER AND ENGINE WILL OVERHEAT
IF VANES COME OFF IMPELLER THEY MUST BE LOCATED AND REMOVED TO INSURE
THEY ARE NOT BLOCKING OR RESTRICTING THE COOLING WATER FLOW IN THE OR FITTINGS
NEW STYLE PUMPS HAVE A PILOT AND CAN BE MOUNTED AND BOLTED TIGHT THE ENGINE OVER
1 Cover Screws 6
2 Pump Cover
3 Cover Gasket
4 Impeller Snap Ring
5 Impeller
6 Key
7 Pump Shaft
8 Water Seal
9 Cam
10 Pump Body
11 Cam Locking Screw
12 Oil Seal
13 Drive Adaptor Not used on Newer Models
14 Roll Pin
15 Drain Plug
SHERWOOD RUBBER IMPELLER PUMP
PIN 300986
FIGURE 9
1 Cover Screws 4
2 Pump Cover
3 Cover Gasket
4 Impeller Snap Ring
5 Impeller
6 Key
7 Pump Shaft
8 Water Seal
9 Cam
10 Pump Body
11 Cam Locking Screw
12 Oil Seal
13 Drive Adaptor Not used on Newer Models
14 Roll Pin
15 Grease Cup
16 Drain Plug
OBERDORFER RUBBER IMPELLER PUMP
PIN 301357
FIGURE 10
1 Impeller Housing
2 ORing
3 Cam Screw
4 Cam
5 Impeller
6 CirClip
7 Flat Washer
8 Seal Seat
9 Not Available Order 13
10 CirClip Internal
11 CirClip External
12 Ball Bearing
13 Seal Seat Assembly
14 CirClip External
15 Key
16 Shaft
17 End Plate
18 Gasket
19 Pump Body
20 Lock Washer SHERWOOD WATER PUMP
21 Bolt
302648
FIGURE 11
MODEL 15 SEA WATER CIRCULATION
Normal Range 1350 to 1440 F
r I I
I 1
I I
I
L 1
FIGURE 12
1 Sea water enters thru sea water inlet
2 Through sea water valve when open
3 Into mixing tee to suction side of pump located below water line
4 Out of pump by hose to inlet on side of block
5 Circulates through block into cylinder head
6 Leaves head on top front to exhaust manifold
7 Circulates through manifold to 31
8 Enters thermostat which remains closed during warm up permitting a small amount of water
to enter exhaust system for cooling and overboards
9 As engine temperature rises the thermostat starts to open permitting hot water to enter ex
haust line At the same time the same amount of cool sea water is drawn in by the pump to
replace the discharge hot water This is done through the mixing tee which is located below
engine or water line to prevent air from entering the system
10 There may be some fluctuation in engine temperature until engine In areas of cold inlet say 50 you may notice some movement from 135 to 155 as
engine
RPM are changed This is less noticeable with warmer inlet water The reason being that
the colder water causes thermostat to react faster than engine temperature It may appear at first that no water is being pumped overboard with the
exhaust gases
However as long as water temperature is within operating range 135 155 there is a flow
of water being pumped overboard which may be noticed only as a fine mist This will con
tinue until the thermostat directs the water flow overboard to allow for greater intake of
cooler sea water
FRESH WATER CIRCULATION DIAGRAM
ALL MODELS EXCEPT M15
Normal Range 1650 F to 1950 F
a I
f I I
I I
J I
I
FIGURE 13
SEA WATER
1 Sea water enters through sea water inlet
2 Through sea water valve when open
3 Through sea water pump into heat exchanger to cool fresh water system
4 From heat exchanger to sea water overboard through exhaust port
FRESH WATER
1 Coolant fresh water with antifreeze is introduced into the system from the coolant section of
exhaust manifold by removing pressure cap and filling manifold tank to within one inch of
lower rim of fill port
2 Fresh water engine driven circulating pump moves coolant from heat exchanger through
engine block circulating pump and thermostat back through exhaust manifold into heat ex
changer to be cooled
The manifold serves as the engine expansion tank to allow for expansion of coolant as it is
heated You also fill the system at this point In some cases when hot water heaters are in
stalled an expansion or surge tank may be required to prevent air from entering the system
Should your engine overheat first check coolant level to make sure it is not low which would
cause air locks to develop If air does enter the system it may require a couple of fillings to
remove the air pocket A momentary increase of engine RPM to approximately 2800 to
3000 RPM may aid in moving the air from the system In some cases it may require dOing
this 2 or 3 times Do this just as you notice the temperature starting to rise above normal
UNIVERSAL DIESEL WITH HURTH Model HBWSO 21
Used on Models 12 M212 M18 M320 M430 M2S and M2SXP
Model HBW100 181
Used on Models 30 3S and 40
Model HBW1S0 191
Used on Model SO
Model HBW1S0 VDrive 2131
Used on All of our VDrive Models
TABLE OF CONTENTS
A Description
B Servicing
C Maintenance
D General Information
E NOT LEAVE GEAR IN FORWARD WHEN SAILING GEAR MUST BE IN NEUTRAL FOR FREE
WHEELING OR SHIFTED INlO REVERSE TO LOCK PROPELLER WHILE SAILING
A The Hurth transmission housing is made of a high strength aluminum alloy that is resistant to sea
water The transmission is equipped with shaved and case hardened helical gears and with shafts
mounted in heavyduty roller bearings Forward and reverse is accomplished by a mechanical fric
tion clutch
Gear shifting is mechanical and requires only a minimum effort on the gear lever Precision set
ting or readjustment of the shifting control Morse or Teleflex is not required
The transmission is designed to permit reversing at full engine speed TO BE USED ONLY IN
THE EVENT OF AN EMERGENCY
B SERVICING
The transmission is filled with Type AFT or DEXRON II transmission fluid at the factory during the
engine load test
Recheck and fill the gear box with the prescribed oil up to the FULL INDENTED RING
MARK ON THE DIPSTICK 14 up from bottom of stick Do not overfill
When checking the oil level DIPSTICK TO BE INSERTED ONLY DO NOT SCREW IN
Tighten the dipstick after adding oil or checking the oil level
FULL 1 Placing in service after storage
If the transmission was completely filled with oil for storage and preservation make sure to
drain the excess oil to the proper level Use new oil if necessary
2 Oil quantity Transmission Fluid Quantity
HBW50 029 Quarts O 30 Liters
Approximately HBW100 033 Quarts O35 Liters
HBW150 059 Quarts O56 Liters
3 Oil grade HBW 150V 110 Quarts 105 Liters
Automatic Transmission Fluid AFT Type A oil only according to specification DEXRON II
General Motors and M2 C33 G Ford
ALWAYS USE THE SAME GRADE AND TYPE OF OIL WHEN ADDING OR CHANGING OIL
WARNING ADDITIVES SUCH AS MOYBDENUM SULPHITE OR THE LIKE MUST NOT BE
CONTAINED IN THE OIL UNDER ANY C 1 Oil level in the transmission should be checked weekly
Oil level See Servicing
2 Changing oil
Change oil after first 25 hours of operation Then change every 300 hours of operation or at
least at intervals of once a year or season
3 Placing transmission in storage
If the transmission is put out of operation for long periods of time under unfavorable en
vironmental conditions it should be protected against corrosion by filling it completely with oil
of the same grade and type Otherwise it should be operated briefly with a good oxida
tion inhibiting oil to allow the agent to contact all parts of the gearbox
REVISED NOVEMBER 1997
D GENERAL 1 General
If the transmission is being painted care should be taken to protect the oil seals at the out
put shaft in back of the coupling Make sure the venting hole on the oil filter screw is not
covered with paint
The assembly should be flex mounted in the boat to avoid distortion
of the transmission housing
2 Angle of The angle of installation must not exceed 150 in relation to the water line in operation See
illustration Figure 13A
3 Operating temperature
Proper ventilation of the engine and transmission compartment should be insured The
operating temperature of the transmission oil should not exceed 2500 F 130 0 C
4 Flexible couplings Optional
The flex coupling between engine coupling and propeller shaft should be designed to absorb
bending stresses to compensate for minor angular deviations after Coupling alignment must be checked with the boat in the water both rigid
and flexible
5 Gear shifting
Shifting requires little effort therefore both the single and dual lever control works well on
this transmission Dual lever is considered the standard in most cases
Shift lever Upon loosening the retaining screw the shifting lever can be rotated as required
to meet the control cable connection The operating cable or rod assembly should be posi
tioned perpendicular to the shifting lever in its neutral position Figure 138
The shifting travel measured at the pivot pOint of the shifting lever must be at least 138
35mm from neutral to forward and neutral to reverse position Longer shifting movements
have no detrimental effect on the transmission Figure 138 however insure lever travels
beyond the detent in both directions when shifting
When shifting transmission engine RPM should be returned to idle then shift transmission
firmly from one direction to another A slight pause in neutral will allow propeller to slow and
add life to When running the engine to charge batteries in neutral engage transmission for 1 or 2
minutes every 2 or 3 hours to lubricate all internal parts
To lock the propeller vertically in line with the keel mark the coupling and POSITION GEAR
IN REVERSE This will prevent slippage and damage to the clutch
CAUTION THE CABLE MUST BE MOUNTED TO THE SHIFT LEVER AT A 90 ANGLE TO
INSURE EQUAL TRAVEL FROM NEUTRAL TO FORWARD AND NEUTRAL TO
REVERSE See Fig TRANSMISSION MUST BE LEFT IN NEUTRAL WHEN SAILING DO NOT
LEAVE IN FORWARD GEAR WHEN SAILING WITHOUT POWER AS IT WILL
DAMAGE GEAR
FIGURE 13A
i 164
FIGURE 138
COUPLINGS
1 Rigid Coupling Specify Bore Size
2 Drivesaver Flex Coupling 1 Thick Require 1
rigid coupling 2A 2B mounting screws
and bolts
3 Flex Coupling Deluxe 2 Thick Specify Bore fl T
Size 3A Mounting capscrews locks and
nuts
4 Set Screws To Lock Coupling To Shaft
5 Point at which you check shaft coupling to
gear coupling See coupling alignment for
details
To ground shaft to engine install jumper lead
from shaft coupling to engine or gear coupling
Transmission or Gear Coupling mounted on
engine VDrive is threaded and requires
capscrew MM diameter
7 Double check clearance between coupling nut
or bolt and bearing cover capscrew on
transmission Must not hit or it will cause
serious transmission failure Rotate coupling
and shaft to check
FIGURE 13C
PERIODIC SERVICE CHART
Always be sure engine is stopped and cool and that your personal safety is considered before making checks
or doing any repair work
PERIOD OF OPERATION THINGS TO DO period Approx 25 Change engine oil filter and
hours at 75 cruise speed transmission oil after first 25 hours
Always allow engine to warm up before
applying load Check Vbelt tension
12 75 hours At least once each season or
whichever comes first change engine
oil and oil 100 hours Or monthly check Vbelt tension 12
deflection
Check electrolyte levels in battery
At least once each year or whichever
comes first change fuel oil filter and
transmission oil
Check engine mounts bolts and lock
nuts for looseness and rubber for
wear
Check engine and shaft alignment
annually or if vibration is noticed
during engine powering
Check all cables for tightness and
location to proper Check for clean tight engine ground
connection to block
Check all fuel and water lines for
tightness or 41
MARINE ENGINE WARRANTY warrants all products and parts of its own manufacture against defects in material for a period of one 1 year from date of
shipment when given normal and proper
usage as determined by seller upon examinations and when owned by the original purchased by seller as complete units and used as an integral part of
sellers be covered by the standard warranty of the manufacture thereof Seller will repair or original shipping point but not install any part or
parts of its manufacture which in its
judgment shall disclose defects in either material or workmanship H requested by seller parts for
which a warranty claim is made are to be retumed prepaid to our factory This
warranty becomes void if article claimed to be defective has been repaired or altered in any way or
when the article has been subject to misuse negligence or accident or when instructions or operating have been disregarded WE MAKE NO OTHER WARRANTY
EXPRESS OR
IMPLIED AND MAKE NO WARRANTY OR OR OF FITNESS FOR PURPOSE AND THERE ARE NO WARRANTIES WHICH EXTEND BEYOND ON THE FACE HEREOF
NO EMPLOYEE OR IS
AUTHORIZED TO CHANGE THIS WARRANTY IN ANY WAY OR GRANT ANY THE REMEDIES HEREIN ABOVE AFFORDED TO THE PURCHASER ARE
EXCLUSIVE OF ALL OTHER REMEDIES PROVIDED BY LAW SELLER SHALL NOT BE
LIABLE FOR INDIRECT OR CONSEQUENTIAL DAMAGES WHERE THE LOSS SUSTAINED IS
OF A COMMERCIAL Manufacturer reserves the right to make product improvements at any time without obligation to make similar changes or add similar
improvements on engines delivered prior to
those with each engine is a warranty registration card This card must contain the owners serial number and model number of the engine and be
retumed to Medalist before the
warranty becomes effective Warranty registration will assist in identifying components required for
your following services or expenses will not be reimbursed under the warranty
1 Tune up of the engine
2 Repairs as a result of neglect misuse improper application accident racing of the
engine and installations that do not meet minimum standards as set forth in the
instruction manual
3 Adjustments needed for cleaning of fuel system and components due to 4 Standard reverse gear adjustments from normal usage or wear
5 Moisture in engine from exhaust systems which permit condensation or back flow of
moisture into the engine
6 Damage or loss of personal property loss of revenue towing charges storage fees
fuel and telephone calls
7 Damages or losses related to handling and shipping
8 Expenses related to replacement of lubricants antifreeze or special additives
9 Failure due to not following recommended maintenance schedules
10 All charges will be the ob6gation of the owner such as freight travel
time and tolls
11 Warranty items returned to the factory collect will be billed to the repairs andor claims must be approved by Medalist Universal Motors prior
to performance OF MATERIAL TO THE FACTORY
All material to be returned must be authorized in advance by Medalist Universal Motors Contact the
service department for assignment of a return goods number Ship material on a prepaid basis the return goods form
PLEASE NOTE
ENGINE WARRANTY REGISTRATION CARD MUST BE RETURNED TO MEDALIST Universal distributors and dealers are
located throughout the United States and and dealers have an ample inventory of parts and can provide prompt expert service in
the maintenance and repair of your Universal Service Department will also provide assistance within the limits of to the Universal Diesel powered
sailing fleet
UNIVERSAL M12 Model 12
Horsepower 10 3600
No of Cylinders 2
Bore x Stroke 252 x 245 in
Cubic Inch 25
Maximum RPM Range Approx 2600 3300 Ratio
Equipment 12 Volt 51 Amp WIGlow Eng Approx Qts
15 20
SAE 30 HD CD or 1OW40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON DIPSTICK
Type AFT oW or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 23 Qts
Exhaust Flange 1 Y4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 300209
Eng Operating Temp Degrees F 1650 to Rotation Right Hand
Weight Ibs Nozzle PIN is governor
controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 at of Trans Oil 2 Qts LUb Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M12
THERMOSTAT HSG
FUEL RETURN
FUEL FILTER
AIR BLEED ON TOP
FUEL AIR BLEED VALVE
SEA WATER
TO EXHAUST STOP LEVER
CLEAN OUT COVER DIP STICK
OIL FILL HOLE
ENGINE COUPLI gn COOLANT DRAIN
OILPAN
BELL HSG TIMING PORT OIL DRAIN
COOLANT FILL CAPIMANIFOLD
COOLANT BLEED VALVE
FLANGE
TEMP SENDER Q
MANIFOLD DRAIN
FW CIRCULATING
PUMP
HEAT EXCHANGER
SEA WATER DRAIN ZINC
PUMP
PANEL PWG
STARTER SOLENOID
STARTER
UNIVERSAL M212
11 3600
No of Cylinders 2
Bore x Stroke 26 x 245 in
Cubic Inch 26
Maximum RPM Range Approx 2600 3300 Ratio
Equipment 12 Volt 51 Amp WIGlow Eng Approx Qts
15 20
SAE 30 HD CD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON DIPSTICK
Type AFT A or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 23 Qts
Exhaust Flange 1 V4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 300209
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzle PIN is governor
controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Qts Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M212
GLOW PWGS
FUEL LINES
THERMOSTAT HSG
FUEL RETURN
FUEL FILTER
AIR BLEED ON TOP
SEA WATER
TO EXHAUST LEVER
CLEAN OUT COVER DIP STICK
OIL FILL HOLE
THROTTLE
gn COOLANT DRAIN
TRANS DRAIN
OILPAN
OPPOSITE SIDE BELL HSG TIMING PORT OIL DRAIN
COOLANT FILL CAP MANIFOLD
COOLANT BLEED VALVE
TEMP SENDER FW CIRCULATING
PUMP
HEAT EXCHANGER
SEA WATER
DRAIN ZINC
PUMP
PANEL PWG
VBELT
MOUNTS
STARTER
UNIVERSAL MODEL M15 11 3000
No of Cylinders 2
Bore x Stroke 268 x 276
Cubic Inch 31
Maximum RPM 3000
Cruising Range Approx 210012600 Ratio Equipment
12 Volt 51 Amp WIG low Eng Approx ats 25
SAE 30 HD CD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON DIPSTICK
Type AFT 1 or GMDEXRON Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx Sea Water Flange 1 Y4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 299381
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs 245 Nozzle PIN 299517 is
governor controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Qts LUb Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
Use pictOrial view M18 or M15 for parts 48
UNIVERSAL MODEL M15
FUEL LINES OIL FILL CAP
GLOW PLUGS
FUEL RETUR
THERMOSTAT HSG
FUEL FILTER
BLEED ON TOP
FUEL AIR BLEED VALVE
SEA WATER
TO EXHAUST STOP LEVER
BLOCK COOLANT DRAIN
SHIFT LEVER
TIMING PORT
COOLANT AIR BLEED DECOM PRESSION LEVER
TEMP SENDER
BYPASS HOSE
EXHAUST DRAIN
HEAT EXCHANGER
SEA WATER
PUMP
PANEL TRANS DIP STICK
OIL FILL HOLE
VBELT
COUPLING
TRANS DRAIN
OIL PAN OIL DRAIN HOSE
UNIVERSAL MODEL M18 14 3200
No of Cylinders 2
Bore x Stroke 260 x 245
Cubic Inch 35
Maximum RPM Range Approx 21002600 R P Ratio
Equipment 12 Volt 51 Amp WIGlow Eng Approx Qts
25 30
SAE 30 HD CD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON DIPSTICK
Type AFT p or GMDEXRON Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 30 qts
Exhaust Flange 1 114 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 300209
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzle PIN 299517 is
governor controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Qts Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M18
OIL FILL CAP
THERMOSTAT HSG
FUEL FILTER
BLEED ON TOP
FUEL AIR BLEED VALVE
SEA WATER
TO EXHAUST P LEVER
BLOCK COOLANT DRAIN
SHIFT LEVER
TIMING PORT
COOLANT AIR BLEED DECOMPRESSION LEVER
TEMP SENDER
BYPASS HOSE
EXHAUST DRAIN
HEAT EXCHANGER
SEA WATER
PUMP
PANEL DRAIN ZINC
TRANS DIP STICK
OIL FILL HOLE
VBELT
m GINE COUPLING
TRANS DRAIN
ARTER SOLENOID
OIL PAN OIL DRAIN HOSE
UNIVERSAL MODEL M20 16 2800
No of Cylinders 2
Bore x Stroke 268 x 276
Cubic Inch 45
Maximum RPM Range Approx 20002400 Ratio
Equipment 12 Volt 51 Amp WIGlow Eng Approx Ots
40
SAE 30 HD CD or 10W40 CAUTION FILL ONLY 10 FULL MARK ON Trans FILL 10 FULL RING ON DIPSTICK
Type AFT 1 or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 5 qts
Exhaust Flange 1 V4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 298852
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzle PIN 298787 is governor
controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Ot of Trans Oil 2 Ots Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and to change without notice
Use pictorial view M40 or M20 for parts 52
UNIVERSAL MODEL M20
FUEL LINES
AIR BREATHER
FUEL RETURN
GLOWPu FUEL AIR
D VALVE
SEA WATER OVERBOARD
EX DRAIN ZINC STOP LEVER
TRANS DIP STICK
OIL FILL HOLE
SHIFT LEVER OIL FILTER
BLOCK COOLANT DRAIN
ENGINE COUPLING
TIMING PORT
COOLANT AIR BLEED VALVE COOLANT FILL CAP
REGULATOR
EXHAUST FLANGE
FW CIRCULATING MANIFOLD DRAIN
PUMP HEAT EXCHANGER
ALTERNATOR HEAT EX CLEANOUT
COVERS
SEA WATER PUMP
DRAIN AND ZINC
DRAIN PLUG
OIL PAN
DIP STICK
UNIVERSAL MODEL M320 18 3600
No of Cylinders 3
Bore x Stroke 260 x 245
Cubic Inch 389
Maximum RPM Range Approx 2600 Ratio
Equip 12 Volt 51 Amp WIGlow Eng Approx Qts
32
SAE 30 HD CD or 10W40 CAUTION FILL ONLY 10 FULL MARK ON Trans FILL 10 FULL RING ON DIPSTICK
Type Aft N or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 3 Qts
Exhaust Flange 1 14 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzles PIN is
governor controlled to prevent overspeecl It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Qts Lube
Oil 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M320
OIL FILL CAP GLOW PWGS
FUEL RETURN THERMOSTAT HSG
AIR BREATHER
FUEL AIR BLEED VALVE
SEA WATER
TO EXHAUST LEVER
CLEAN OUT COVER
TRANS DIP STICK
OIL FILL HOLE
DIP STICK
ENGINE COUPLING DLIn COOLANT DRAIN
BELL HSG
COOLANT FILL CAP MANIFOLD
COOLANT BLEED VALVE
TEMP SENDER
MANIFOLD DRAIN
FW CIRCULATING n PWG
PUMP
nel EXCHANGER
SEA WATER DRAIN ZINC
PUMP
FLEX MOUNTS
STARTER SOLENOID
STARTER
UNIVERSAL MODEL M25 21 3200
No of Cylinders 3
Bore x Stroke 283 x 276
Cubic Inch 52
Maximum RPM Range Approx 210012600 Ratio
Equipment 12 Volt 51 Amp WIG low Eng Approx Qts
40
SAE 30 HD CD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON DIPSTICK
Type AFT p or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 5 qts
Exhaust Range 1 Y4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 300209
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs 285 Nozzle PIN 299517 is
governor controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Ots Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M25
AIR BREATHER
FUEL RETURN NJECTOR PUMP
EXHAUST FLANGE INJ PUMP BLEED
GLOW PLUGS
CLEAN OUT THROTTLE
DIP STICK
LOCK COOLANT
DRAIN
TIMING PORT
BELL HOUSING OIL DRAIN HOSE
FUEL FILTER
AIR BLEED ON TOP OF AIR BLEED
MANIFOLD
TEMP SENDER
MANIFOLD DRAIN
FW CIRCULATING HEAT EXCHANGER
PUMP
PANEL PLUG
SEA WATER
PUMP DRAIN
STARTER SOLENOID
OIL FILTER
TRANS DRAIN PLUG
UNIVERSAL MODEL M25XP UPDATE OF 23 3200
No of Cylinders 3
Bore x Stroke 295 x 276
Cubic Inch 566
Maximum RPM Range Approx 21002600 Ratio
Equipment 12 Volt 51 Amp WIG low Eng Approx Ots
40 to 43
SAE 30 HDCD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON DIPSTICK
Type AFT 1 or GMDEXRON Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 5 qts
Exhaust Flange 1 14 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 300209
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzle PIN 299517 is
governor controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 at of Trans Oil 2 ats Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M2SXP
OIL FILL CAP
THERMOSTAT HSG
AIR BREATHER
FUEL FILTER
AIR BLEED ON TOP
FUEL AIR BLEED VALVE
SEA WATER
TO EXHAUST STOP LEVER
THROTTLE
DIP STICK
vn COOLANT DRAIN
COOLANT BLEED VALVE
TEMP SENDER
BYPASS HOSE IFOLD DRAIN
FW PANEL PWG
HEAT EXCHANGER
SEA WATER DRAIN ZINC
PUMP
MOUNTS
STARTER
UNIVERSAL MODEL M430 25 3600
No of Cylinders 4
Bore x Stroke 260 x 245
Cubic Inch 519
Maximum RPM Range Approx 2600 Ratio
Equip 12 Volt 51 Amp WIGlow Eng Approx Ots
4
SAE 30 HD CD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON
DIPSTICK
Type Aft 1 or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 3112 Ots
Exhaust Flange 1 114 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
011 Filter PIN Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzles PIN is
governor controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 at of Trans Oil 2 Ots Lube
Oil 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M430
OIL FILL CAP GLOW PWGS
FUEL LINES
THERMOSTAT HSG
R BREATHER
FUEL FILTER
AIR BLEED ON TOP
AIR BLEED VALVE
SEA WATER
TO EXHAUST STOP LEVER
CLEAN OUT COVER
TRANS DIP STICK
OIL FILL HOLE
DIP STICK
ENGINE COUPLING DL COOLANT DRAIN
BELL HSG
COOLANT FILL CAP
COOLANT BLEED VALVE
FLANGE
TEMP SENDER
FW CIRCULATING PANEL PWG
PUMP l
HEAT EXCHANGER
SEA WATER
DRAIN ZINC
PUMP
FLEX MOUNTS
STARTER SOLENOID
STARTER
UNIVERSAL MODEL M30 24 2800
No of Cylinders 3
Bore x Stroke 300 x 323
Cubic Inch 68
Maximum RPM Range Approx 20002400 Ratio
Equipment 12 Volt 51 Amp WIG low Eng Approx Qts
50 to 55
SAE 30 HD CD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON DIPSTICK
Type AFT or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 6 qts
Exhaust Flange 1 Y4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 300209
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzle PIN 298787 is governor
controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 at of Trans Oil 2 ats Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
Use pictorial view M40 for parts 62
UNIVERSAL MODEL M30
FUEL LINES
AIR BREATHER
FUEL RETURN
GLOWPLu FUEL AIR
VALVE
SEA WATER OVERBOARD
EX DRAIN ZIN STOP LEVER
TRANS DIP STICK
OIL FILL HOLE
SHIFT LEVER OIL COUPLING
TIMING PORT
COOLANT AIR BLEED VALVE COOLANT FILL CAP
ST FLANGE
FW CIRCULATING ANIFOLD DRAIN
PUMP HEAT EXCHANGER
ALTERNATOR HEAT EX CLEANOUT
COVERS
SEA WATER PUMP
DRAIN AND ZINC
S DRAIN PLUG
OIL PAN
DIP STICK
UNIVERSAL MODEL M35 30 3200
No of Cylinders 4
Bore x Stroke 296 x 276
Cubic Inch 755
Maximum RPM Range Approx 21002600 Ratio
Equipment 12 Volt 51 Amp WGlow Eng Approx Qts
45 to 50
SAE 30 HD CD or 10W40 CAUTION FILL ONLY 10 FULL MARK ON Trans FILL 10 FULL RING ON DIPSTICK
Type AFT I or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 5 qts
Exhaust Flange 1 Y4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 300209
Eng Operating Temp Degrees F 165Ofo Rotation Right Hand
Weight Ibs Nozzle PIN 299517 is governor
controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Ots Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M35
OIL FILL CAP
INJ THERMOSTAT HOUSING
GLOW PLUGS BYPASS HOSE
SALT WATER TO
EXHAUST FUEL AIR BLEED VALVE
CLEAN OUT STOP LEVER
COVERS
DIP STICK
OIL FILL HOLE
LOCK COOLANT DRAIN
SHIFT LEVER
FLEX FUEL FILTER
AIR BLEED ON TOP
BELL HOUSING
COOLANT FILL CAP
FUEL LINES
FW CIRCULATING
PUMP
MANIFOLD DRAIN
SEA WATER
PUMP HEAT EXCHANGER
ALTERNATOR
ENGINE COUPLING
OIL FILTER TRANS DRAIN
OIL DRAIN
HOSE STARTER SOLENOID
OIL PAN
UNIVERSAL MODEL M40 32 2800
No of Cylinders 4
Bore x Stroke 300 x 323
Cubic Inch 91
Maximum RPM Range Approx 20002500 Ratio
Equipment 12 Volt 51 Amp WIG low Eng Approx Qts
ao to 85
SAE 30 HD CD or 1OW40 CAUTION FILL ONLY 10 FULL MARK ON Trans FILL 10 FULL RING ON DIPSTICK
Type AFT A or GMDEXRON II Do not mix different Reduction 21
Coolant FWC 5050 Solution Approx 8 qts
Exhaust Flange
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 299927
Eng Operating Temp Degrees F
Propeller Rotation Right Hand
Weight Ibs Nozzle Prior to Ser 315023 PIN 299517 299518
After Ser 315023 PIN is governor controlled to prevent overspeed It is recommended to carry the following extra parts
should
the need arise Vbelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Ots Lub Oil
and 1 Gal 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M40
FUEL LINES
AIR BREATHER
FUEL RETURN
GLOW PLUGS FUEL AIR
LEED VALVE
TH ROTTLE
HEAT EX DRAIN ZI STOP LEVER
TRANS DIP STICK
OIL FILL HOLE
SHIFT LEVER OIL FILTER
BLOCK COOLANT DRAIN
ENGINE COUPLING
TIMING PORT
COOLANT AIR BLEED VALVE COOLANT FILL HSG
ST FLANGE
IFOLD DRAIN
FW CIRCULATING
PUMP
ALTERNATOR HEAT EX CLEANOUT
COVERS
SEA WATER PUMP
DRAIN AND ZINC
VBELT DRAIN PLUG
OIL PAN
DIP STICK
UNIVERSAL MODEL M50 44 3000
No of Cylinders 4
Bore x Stroke 335 x 323
Cubic Inch 115
Maximum RPM Range Approx 20002500 Ratio
Equipment 12 Volt 51 Amp WIG low Eng Approx Qts
85
SAE 30 HD CD or 10W40 CAUTION FILL ONLY TO FULL MARK ON Trans FILL TO FULL RING ON Reduction
FWC 5050 Solution Approx 8 qts
Exhaust Flange 1 V4 NPT
Fuel Type 2 Diesel
Fuel Filter PIN 298854
Oil Filter PIN 299927
Eng Operating Temp Degrees F 1650 to Rotation Right Hand
Weight Ibs 545 Nozzle PIN is governor
controlled to prevent overspeed It is recommended to carry the following extra parts should
the need arise VBelt Sea Water Pump Impeller Fuel Lube Oil Filters 1 Qt of Trans Oil 2 Qts Lub Oil
and 1 Gal of 5050 Coolant
All pictorial views and subject to change without notice
UNIVERSAL MODEL M50
FUEL LINES
INJECTORS
AIR BREATHER
FUEL RETURN
GLOW PLUGS J FUEL AIR
LEED VALVE
SEA WATER EX DRAIN ZINC STOP LEVER
TRANS DIP STICK
OIL FILL HOLE
O I L FILTER
BLOCK COOLANT DRAIN
ENGINE COUPLING
MOUNTS
TIMING PORT
COOLANT AIR BLEED VALVE COOLANT FILL CAP
FW CIRCULATING ANI FOLD DRAIN
PUMP HEAT EXCHANGER
ALTERNATOR HEAT EX CLEANOUT
COVERS
SEA WATER PUMP
DRAIN AND ZINC
VBELT DRAIN PLUG
STARTER
OIL PAN
DIP STICK
PROGRAMMABLE TACHOMETER WI HOURMETER
On the back of the tachometer there is an overshaped black plug Upon removal of the plug will be visible The switches are divided into two sections
The program must be entered from
left to right ie switch position 1 is the left most number Down represents an OFF position and UP
represents an ON position Please refer to your model for proper setting
SETTINGS AS VIEWED FROM BACK OF TACH
MODELS M212 M320 M430
1 3 4 5ffi2 34
5 6 7 8
1 bid
o o
BACK OF TACH
GND SEND
MODELS M25XP M35
P3456
o l BACK OF TACH
GND SEND
MODELS M40 M50
1 2 3 45
6 2 3 4 5 7
o l M o
BACK OF TACH
GND SEND
SEE OTHER SIDE FOR MORE MODELS
MODELS M15 BACK OF TACH
SEND
MODELS M20 M30
45623456
l WDJ
o BACK OF TACH
GND SEND
MODEL M25
23445678
o 1 kkbd
I DJ o
BACK OF TACH
GND SEND

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.