Yamaha 4 Stroke 9.9 Leaking Oil

Grant Brown

Grant Brown

Petty Officer 1st Class
Joined
Mar 13, 2004
Messages
390
I just got an older 9.9 4 stroke given to me.
It is leaking motor oil from the power head when tilted.
Seems to run fine.
Anywhere to start looking for the leak?

Grant
 
G

gill

Seaman Apprentice
Joined
Dec 10, 2009
Messages
42
Re: Yamaha 4 Stroke 9.9 Leaking Oil

How far do you have to tilt it before it leaks oil? I would say you need to pull the flywheel and move the stator/timer base and take a look at the main crankshaft seal on the top of the engine
 
Grant Brown

Grant Brown

Petty Officer 1st Class
Joined
Mar 13, 2004
Messages
390
Re: Yamaha 4 Stroke 9.9 Leaking Oil

Thanks I was thinking that might be where I was heading. I'm not sure if I want to keep this one or send it on it's way.
Is there a manual online anywhere?
 
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