Alternative for Rubber Prop Nut

[brianwhi]

I had a nice row back yesterday (of course against the wind) when the rubber drive pin retainer nut & pin separated from my 62 Evinrude 5.5 Fisherman. I'm having a hard time finding the part on the internet & I'm wondering if there is a viable alternate solution. The rubber part always struck me as an engineering weak link on this setup. Does a stainless steel hose clamp work OK? Is there some other cheap hardware store solution?

 

[ezeke]

Re: Alternative for Rubber Prop Nut

Part # 0303365 Should do it from a dealer - around 5 or 6 dollars. Parts Example<br /><br />or, try here and scroll to bottom of price list to order: Prop Parts

 

[brianwhi]

Re: Alternative for Rubber Prop Nut

Thanks! I could not get a match searching the first link parts site but the second site had the parts listed. The tricky part was finding out what the parts names are. I called them retainer nut, rubber nut, shear pin, etc, but they are actually a "cap" and "drive pin". I'm planning on ordering them from the store at the 2nd site listed. My original question stands though; I wonder if anyone has come up with a low cost generic solution not requiring the original parts? Because I couldn't find "shear pins" for the engine I've been using homemade pins cut from a bronze rod purchased at the local hardware for a couple of bucks per foot. It worked well until the rubber cap came off.

 

[Paul Moir]

Re: Alternative for Rubber Prop Nut

I make my own pins too whenever possible. Yours ought to be 3/16" stainless rod cut to 15/16" lengths. OMC calls the pins "Drive Pins" since the rubber hub in the prop is supposed to provide protection.<br />As rubber parts and such dry up (no pun intended ) the aftermarket takes over pretty quickly. It's suprising the number of impellers, bumpers, grips, mouldings and other parts that are out there manufactured by cottage industries. <br />I've never had a problem with the cap, but on larger outboards they used a plastic cap that was pinned to the propshaft with a cotter pin. It wouldn't be much to rig up something similair.

 

[ezeke]

Re: Alternative for Rubber Prop Nut

The way to use the first reference when you know a part number is to put in the part number at the very top center of the home page and press "GO".<br /><br />The SHEAR PIN was called a "DRIVE PIN", and was part #0302333. <br /><br />The purpose of the shear pin was to take the shock of a struck object and protect the gears.<br /><br />If the metal is too hard, functionality is lost and the gears can suffer destructive force. It's best to use the specified Drive Pin whenever possible.