Yachtwin 3hp cracked “tophat” plastic piece in propeller

[LargemouthBass21]

I’m swapping all the “guts” out of my old bent and broken prop onto a new one. The little black plastic tophat piece has a chunk missing... is this a problem. Also do I have to grease the rubber insert that goes inside the prop?? Thanks in advance

 

[F_R]

The part centers and locates the prop on the hub. If it isn't too badly broken and does what it is supposed to do, I suppose it will be OK. Do not grease the rubber ring, but do make sure is isn't rock hard. It's function is to "give" upon impact with a submerged object instead of shearing the drive pin. It will actually hop over a notch on the hub upon hard impact. Grease may make it hop too easily.

 

[LargemouthBass21]

The part centers and locates the prop on the hub. If it isn't too badly broken and does what it is supposed to do, I suppose it will be OK. Do not grease the rubber ring, but do make sure is isn't rock hard. It's function is to "give" upon impact with a submerged object instead of shearing the drive pin. It will actually hop over a notch on the hub upon hard impact. Grease may make it hop too easily.

Thank you very much sir, you sure know your stuff!! Should I lightly grease the actual prop shaft of the motor?

 

[LargemouthBass21]

This it the worst part of the damage

 

[Crosbyman]

if you are worried about it just patch it up with JB weld plastic repair and shape it with a file

 

[F_R]

That missing chunk isn't a problem.

YES!!! Grease the shaft before sliding the hub on.

 

[LargemouthBass21]

That missing chunk isn't a problem.

YES!!! Grease the shaft before sliding the hub on.

Thank you!