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Old 05-18-2013
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Re: Yanmar 2GM20F Oil pan leaks

Ken - If the leak is between the front area and the main motor it is a known Yanmar 2GM20F problem and "should" be covered by warrantee - mine wasn't - they stonewalled me and I ended up paying for the work myself - and I paid top dollar because of the marina where I was stuck.

From the sound of it you have a break in your timing gasket.

You need:
one timing gasket (part 1215701512) was $17.79 in 2006
one gasket (part 1215701861) was $1.70 in 2006
two "O" rings (part 24311000100) were $1.38 each in 2006

That's all.

More info:

"Yanmar have produced a new steel reinforced gasket to combat the problem p/n 121575- 01512. Other parts required are side cover (inspection plate) gasket p/n 121575-01861 oil way o-rings x2 p/n 24311-000100"

and more:

"This is the Yanmar technical bulletin that deals with a timing cover issue. The bulletin # MSB-02-003 must accompany any warranty claim that is submitted. "

It is a simple job to replace the gasket and two "O" rings. No need to drain the oil nor the water.

The new "metal" type gasket that replaces the old "paper" gasket.

PM me if I can give you more details. I have pictures.

Rik
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Last edited by rikhall; 05-18-2013 at 11:16 PM.
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