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Pyi Max Prop 3 Blade Instructions



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1 INTRODUCTION Thank you for having chosen a MaxProp feathering propeller for your vessel This instruction booklet is designed to answer all your questions on assembly of the MaxProp Please read it carefully and assemble the propeller at least once before installing it on your boat Automatic Feathering Propeller 2 PITCH ADJUSTMENT This is a critical step make sure that you know what pitch to set the propeller at either by your old propeller or by your engine and reduction ratio The pitch is adjustable from 10 to 30 degrees of blade angle Figure 1 shows the conversion from inches of pitch to degrees of blade Instructions To properly convert from inches to degrees follow steps A thru C A Determine the diameter of your propeller B Go down the column that corresponds to your propeller diameter untilTHREE BLADE CLASSIC you find the desired amount of pitch C Cross reference this pitch in inches to the blade setting angle directly across the chart and you will have the desired blade angle Propeller Diameter in inches 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 10 deg 4 43 46 49 52 55 6 63 67 71 74 77 8 83 86 12 deg 48 52 56 6 64 68 72 76 8 84 88 92 96 10 104 MaxProp Blade Setting Angle 14 deg 56 6 66 71 76 8 84 88 94 98 104 108 112 116 122 16 deg 64 69 76 81 86 91 98 103 108 113 12 125 13 135 14 18 deg 72 78 86 92 98 104 11 115 121 128 134 14 146 152 16 20 deg 82 89 96 103 11 116 124 13 137 145 15 156 164 17 178 22 deg 92 10 107 114 122 129 136 143 151 16 168 175 182 189 198 24 deg 10 109 118 125 134 142 15 158 168 176 184 192 202 21 218 26 deg 11 12 128 138 147 157 166 174 184 193 202 21 22 229 238 28 deg 12 13 14 15 16 17 18 189 20 21 22 23 24 25 26 30 deg 13 14 151 162 173 185 196 206 217 228 24 25 261 273 282 Pitch in inches Fig1 12532 Beverly Park Rd Maxprop offers the great advantage of pitch adjustability in order to optimize the performance of the propeller If the propeller does not reach the desired RPM Lynnwood WA 98087 reduce the blade angle If on the contrary the engine exceeds the desired RPM Office 425 3553669 increase the blade angle A two degrees change in blade angle will change the engine RPM by 1315 at the same boat speed The adjustment of angle and Fax 425 3553661 therefore of pitch is done when the propeller is mounted on the shaft To obtain Email Infopyiinccom the different values of angle you have to follow the assembly instruction3 3 wwwpyiinccom3 ASSEMBLY Make sure that if you receive more than one propeller that do 2 No Drill Nut Tighten the nut 4 onto the shaftAlign the groves in the base of not interchange parts Each propeller is individually balanced and if the nut with the groves in the central hub so as to obtain two complete holes interchanged it will be put out of balance Please use figure 2 in the allowing insertion of the pins 5 Insert the pins then rotate the pins are as instruction book for part number references shown in the drawing below so as not to interfere with the inserting of the central cone gear see figure below33 yes no 4 5 One thread can be exposed aft of either nut system if more than that are showing it will be necessary to cut off the excess with a hack saw If too many threads are exposed it will raise the central cone gear 6 and effect the performance of the propeller C On the bottom of the central gear 6 there is a groove on the bottom of one of the teeth this represents the X on the chart in figure 3 Place the tooth with the groove into the corresponding lettered gear on the hub 1 x 30 H Right Rotation Fig2 28 D 26 V 24 SA Fit the hub 1 to the propeller shaft 2 Be sure that the key 3 is the proper dimension and that the hub slides completely onto the shaft If you are not sure remove the key and slide the hub onto the shaft making a mark on the x 22 20 18 N K E shaft where the hub stops on the shaft Reinsert the key and slide the hub 16 C 14 T on to the shaft if it slides up to your mark it is fine If not you will need to ABCDEHKLNPSTV 12 P file down the sides or top of the key until the hub slides completely onto the 10 L shaft 0 K 10 H Left RotationB Two types of nuts are available in the Maxprop 12 D 14 B 16 S 1 Drilled Nut Tighten the nut 4 onto the shaft and secure it with the 18 N pin by drilling a hole completely through the nut and shaft a cobalt 20 K drill bit makes this task easier 22 E 24 C 26 A Fig3 28 P 30 L D Fill the two halves of the spinner 7 with a sea water grease From our experience Lubraplate 130 AA grease has worked best Close the two halves around the hub and tighten down the screws NOTE DO NOT USE TEFLON GREASE it will wash out very quicklyE Locate the mark on the top inside of the spinner a small drill hole This is F Insert the three blades onto the three pins of the spacer 10 Fill the end the Y mark in figure 2 Rotate the spinner until the Y mark on the spinner cap 11 with grease and put the blades into the three seats of the end cap coincides with the correct letter on the top of the central cone gear This letter is determined from the chart in figure 4 Fill the top of the spinner with grease Y 30 H Right Rotation 28 K 26 B 24 C 22 D 20 E 18 H 16 K 14 B NOTE Make sure that the numbers on the blades correspond to the 12 C numbers in the spacer and the numbers on the end cap 1 to 1 2 to 2 10 D and 3 to 3 0 D 10 D G Move the blades to a feathered position making sure that the rounded Y Left Rotation 12 E trailing edges of blades are aft as shown in figure 6 Slide the end cap and HED 14 H feathered blades on to the spinner make sure that the numbers on the 16 A CBA K blades and spinner match Next tighten down the end cap with the screws 18 B 20 C NOTE Check to see that the spinner did not rotate If it did move pull the 22 D blades back 14 and then realign the mark between the spinner and the 24 E hub Make sure that when the blades go on to the spinner that they are fully 26 H Fig4 28 A feathered 30 B H To make the blades rotate more freely it is advisable after tightening all the screws to give some bedding blows on the spinner and blades with a plastic NOTE It is helpful to make a mark between the spinner and exposed part of or wooden mallet the hub or tape them so that any rotation can be noted and corrected If the spinner is rotated before the blades are attached it will alter the blade angle I To make sure that the screws will not loosen insert a 116 stainless steel cotter pin into the head of each screw Put them on so that if the screw were to loosen it would hit the cotter pin as shown in figure 5 Cut the cotter pins to a length of 14 and put them in A tight tap with a hammer on the head of the pin will spread the ends open if not use a screw driver to spread them apart MARK Fig5 no yes unscrewingJ Make sure that the propeller is protected from galvanic corrosion by using On the contrary if the blades rotation is hard remove 001 mm from zinc anodes on the propeller shaft and on the end cap of the propeller If the surfaces B of the spacer using emery cloth wrapped around a flat propeller has been assembled properly file Try until both hub and blades rotate freely The blades must rotate freely and stop at the blade angle you selected In the feathered position the blades must line up perfectly as in figure 6 2 Again mount the central cone gear 6 and reassemble the propeller If The propeller must never rotate as shown in figure 7 the propeller rotation still has some hard points remove 01 mm with a flat file from surface C so that central cone gear sits lower and the clearance between conical gears increases 5 PROPELLER USE The Maxprop works automatically By putting the engine in gear the blades will engage in either forward or reverse The best way to feather the propeller is Power at 2 to 3 knots in forward Kill the engine while still engaged in forward Fig6 Fig7 When the engine has stopped if the shaft is still spinning engage the transmission in reverse to stop the freewheeling yes no You can check to see if the propeller is feathered or not by taking the engine out of gear If the propeller is not feathered the shaft will freewheel like with a4 TROUBLE SHOOTING If the propeller feels stiff or has a hard spot in the fixed blade propeller rotation systematically go through the points below In that case start the engine again and repeat the three steps If your A If the propeller does not rotate freely remove some of the grease from propeller has been greased properly it will feather in a fraction of a second as the spinner and reassemble soon as you stop the shaft from freewheeling Once the prop is feathered you can either leave the transmission in gear or out of gear it does not B Sometimes it can happen that a small piece of metal or burr enters matter DO NOT kill the engine while in reverse In this case the blades will among the gears or a piece of the propeller has been dinged in this be in the reverse position and will not feather You can actually use this case the blade movement can become hard It is necessary then to do feature to drive a shaft alternator as follows referring to figure 8 6 PROPELLER MAINTENANCE The Maxprop needs to be regreased a minimum of once every two yearsWe recommend Lubraplate 130 AA B grease There are two holes in the spinner of the propeller to grease Remove the set screw from the forward holes with a 3 metric Allen wrench and screw in the zerc tower attach your grease gun and fill the propeller with grease until the grease starts to come out between the hub 1 and the spinner 7 Replace the set screw and remove the set screw from the more aft hole C Reinstall the zerc tower and attach your grease gun and fill the propeller with grease until the grease starts to come out between the blades and the spinners Remove the zerc tower and reinsert the set screw into the 6 propeller Do not leave the zerc tower in the propeller A Fig8 1 Open the propeller and assemble it again after having taken the central cone gear 6 out so that the blade and the hub rotation are independent If the hub rotation is hard remove 001 mm from surfaces A with an emery cloth With each pump of the grease gun rotate the propeller from forward to reverse maxprop to allow the grease to work through the propeller The numbers above are from Figure 2 at the beginning of this Maxprop Manual Make sure that you always keep the zinc anodes in good condition They must be replaced at least once a year The propeller must be protected by a lot Automatic Feathering Propeller of zinc so also use a zinc on the shaft when possible When replacing it makesure that you clean the contact point between the zinc and propeller Use awire brush or fine sandpaper to clean the aft of the end cap and the forwardface of the zinc to give the zinc good contact with the propeller7 PROPELLER REMOVAL In order to remove the propeller you must first Installation Instructions remove the spinner and nut Be sure only to pull from outside the hub figure 9 If the surfaces on the hub are hit or dinged it can effect the performance of the propeller THREE BLADE CLASSIC no Fig9 yes8 WARNING It is important to follow the instruction below carefully so as to avoid a shock to the gears on the blades and cone gear that could be damaging to the teeth 1 When going from forward to reverse and the opposite it is necessary to idle down and shift at low RPMs between gears 2 The propeller body must always be completely filled with a very fluid grease This is so when you reverse direction the rotation will be smooth with no binding Binding points will produce a shock and could damage 12532 Beverly Park Rd the gears Lynnwood WA 98087 Office 425 3553669 Fax 425 3553661 Email Infopyiinccom wwwpyiinccom

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