9.9 mercury prop slipping

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Whitey1974

Cadet
Joined
May 26, 2013
Messages
11
Today I got a rock stuck between the prop and the prop guard. After I removed the rock the prop seemed to be slipping at higher rpm's. I thought it was probably a shear pin but was u able to locate one when I removed the prop. What might be going on?
 
Bondo

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,513
Re: 9.9 mercury prop slipping

Ayuh,.... Welcome Aboard,... My guess is, the rubber hub is stripped...

A Prop Shop can replace it for ya...
 
S

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: 9.9 mercury prop slipping

A prop shop can replace the hub and repair any damage.
However a new prop replacement may be more cost affective.
Also a new prop may be the latest technology.
 
W

Whitey1974

Cadet
Joined
May 26, 2013
Messages
11
Re: 9.9 mercury prop slipping

Thanks for the info guys. I think I'll check into a new prop. One of the disadvantages of running a prop guard is the occasional rock getting stuck. Thanks again.
 
Sea Rider

Sea Rider

Supreme Mariner
Joined
Sep 20, 2008
Messages
12,345
Re: 9.9 mercury prop slipping

Runing prop guards lessens rpm a bit, will benefit going 1 pitch down to raise revs up to where it used to be before installing prop guard.

Happy Boating
 
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