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WARNING

It is important to follow the instruction below carefully so as to avoid a shock load to the 

gears on the blades and cone gear, that could be damaging to the teeth.

• 

When going from forward to reverse and the opposite, it is necessary to idle down and 

shift at low RPM’s between gear, that could be damaging to the teeth.

PROPELLER REMOVAL

In order to remove the propeller you must first 

remove the 

zinc and remove the nut. Next fit a long armed gear puller 

over the front of the propeller as shown in Fig.7 on page 8. 

Tightening the center bolt of the gear puller will release the 

Max-Prop from the propeller shaft.  

If the bolt from the gear puller is not long enough to contact 

the end of the propeller shaft inside the Max-Prop nut can 

be loosened and left in place. In this scenario the bolt from 

the puller will push against the back of the nut to release the 

propeller from the shaft. 

Fig.7

PROPER FITTING OF A NEW LOCKING NUT OF THE PROPELLER 

If the shaft nut needs to be replaced at any time during the life of the propeller, it will need to be 

fit to this propeller with the correct tolerances (may require some light machining). Of course, 

when receiving a new propeller, the nut has already been machined to fit with the proper 

tolerances.

1. 

When it’s locked on the motor shaft, the nut must contact the 3 surfaces S1, S2, S3. 

Therefore, if a new nut has to be machined you must be sure that length L1 and L2 coincide 

precisely with the corresponding lengths of prop hub, and that length L3 is greater than 

the length of the threaded edge of motor shaft.  To check that the work is done properly, 

you just have to spread a very thin coat of Prussian blue on the 3 surfaces S1, S2, S3. Insert 

the nut in its seat in the hub and let the nut rotate softly in relation to the hub, with a light 

pressure. When this is done, the 3 surfaces of the hub must be painted in blue.

2. 

When fitting the prop on the motor shaft, it’s necessary to check that the threaded part  

of the motor shaft doesn’t touch the threaded end of the nut. Also, when the nut is tight, 

the blades rotation on their axis does not get hard. In case the blades rotation movement 

becomes hard, you have to remove from surface S1 a very small amount of material. This 

operation can be done simply by using a flat smooth file.

L2

S1

S2

S3

L1

L3

Shaft Nut

Fig.8

8

Summary of Contents for Max-Prop EASY 2 Blade

Page 1: ...EASY SAILDRIVE INSTRUCTION MANUAL 2 3 4 BLADES WWW MAX PROP COM Quality Marine Equipment Since 1981 For installation videos visit our website ...

Page 2: ...dy assembled unlike Classic Max Prop models The rotation left or right hand and pitch has been determined at the time of the order and is therefore ready to be fitted on the shaft Please note that Max Prop parts are NOT interchangeable so make sure that if you receive more than one propeller for a catamaran for example you do NOT interchange parts WHATS INCLUDED x2 Shaft Nut Lock Screws x3 Zinc Bo...

Page 3: ...upplied using a grease fitting supplied inserted into the grease holes on the side of the propeller marked GREASE The Max Prop Easy propeller works properly only if the central body is completely filled with the correct grease Verify that the grease is oozing from the rotating joints between the central part and the hub so that all of the moving surfaces are perfectly greased The grease used must ...

Page 4: ...GREASE GREA SE GREASE Repeat these steps with the forward fitting GRE A SE GREASE GREA SE GREASE GREA SE GREASE GR E A SE GREASE GREA SE GREASE GREA SE GREASE GREA SE GREASE 4 1 4 4 4 7 4 2 4 5 4 8 4 3 4 6 4 9 3 ...

Page 5: ...2 PROPELLER DIAMETER 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 BLADE ANGLE 10º 4 4 3 4 6 4 9 5 2 5 5 6 6 3 6 7 7 1 7 4 7 7 8 8 3 8 6 12º 4 8 5 2 5 6 6 6 4 6 8 7 2 7 6 8 8 4 8 8 9 2 9 6 10 10 4 14º 5 6 6 6 6 7 1 7 6 8 8 4 8 8 9 4 9 8 10 4 10 8 11 2 11 6 12 2 16º 6 4 6 9 7 6 8 1 8 6 9 1 9 8 10 3 10 8 11 3 12 12 5 13 13 5 14 18º 7 2 7 8 8 6 9 2 9 8 10 4 11 11 5 12 1 12 8 13 4 14 14 6 15 2 16 20º 8...

Page 6: ... as follows On the body of the propeller are two threaded bores marked with letters R and L within these bores are placed two bolts The pitch of the propeller both in forward and reverse position can be easily varied by changing the supplied bolts threaded into the body of the propeller with other bolts of a different length The pitch in forward rotation varies by changing the bolts placed in bore...

Page 7: ... rotation to a left hand rotation or vice versa do as follows referring to Fig 6 1 Place the propeller in the feathered position Unscrew the locking zinc screws and remove the zinc 2 Unscrew the locking nut screws and remove the nut 3 Remove the Circlip on the aft edge of the hub 4 Be sure the propeller is in the feathered position then release the zinc bearing ring 5 Once released the zinc bearin...

Page 8: ...ction of a second as soon as you stop the shaft from freewheeling DO NOT kill the engine while in reverse In this case the blades will be in the reverse position and cannot feather You can actually use this feature to drive a shaft alternator or regenerate with an electric motor Modern transmissions are either mechanical or hydraulic With a mechanical transmission the best way to stop the shaft fr...

Page 9: ...fit to this propeller with the correct tolerances may require some light machining Of course when receiving a new propeller the nut has already been machined to fit with the proper tolerances 1 When it s locked on the motor shaft the nut must contact the 3 surfaces S1 S2 S3 Therefore if a new nut has to be machined you must be sure that length L1 and L2 coincide precisely with the corresponding le...

Page 10: ...Notes 9 ...

Page 11: ...Notes 10 ...

Page 12: ... www pyiinc com EUROPEAN HEADQUATERS Zl du Capitou 85 rue Louis Lepine 83600 Frejus France 33 4 94 5327 70 info seaviewprogress com www seaviewprogress com UK OFFICE 44 0 7393 556751 simon wood seaviewprogress co uk www seaviewprogress com 1 061318 WWW MAX PROP COM For installation videos visit our website ...

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