Question about 2000 Yamaha WR 400 F

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I have a oil leak througt cilinder it´s cracked under, top left forward blot. i don´t figure out when it happen. no hard use sorry for my english but i speak spanish. thank

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Doesnt really matter when it happened, does it?
Take the head off and make sure what is cracked. Maybe youll get lucky and all you will need is a new head. I suggest if a new cylinder is required then you also get a new piston and rings and have the cylinder bored to fit for best reliability and performance.

Posted on Nov 20, 2009

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Posted on Jan 02, 2017

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