'05 Yamaha 4 stroke F150 question

crabby captain john

Lieutenant Commander
Joined
Aug 6, 2011
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OK guys ~~ I think I know what the experts will say but need confirmation.

I have an '05 Yamaha F150 4 stroke. Right around 3200 - 3400 RPM I hear a rattle. Less often heard when accelerating than when cutting back. Most noticeable when coming off around 4000 RPM to the 3400 range.
 

crab time

Cadet
Joined
Sep 18, 2011
Messages
6
Re: '05 Yamaha 4 stroke F150 question

I am no expert but been in boats my whole life and the first thing I would check is the latches that lock down the cowl.. I've had some come loose before causing a "rattling" sound.. or check all around the engine for a loose bolt or nut.. If that doesn't do it you may have something more serious wrong.
 
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