Question about 2002 Yamaha YZ 426 F

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Can any1 help me just bought me first 4 stroke motocross bike and when driving it in any gear at a low speed i can hear a noise which sounds like the chain slappin, but its only when im at a low speed and open it up a bit i can hear this when flat out its grand. its just when goin easy and open it up i can hear it. is this normal can any1 tell me? iv ast a lad would it be the timing chain and he said if that was loose it would have sliped any more advice just to be sure thanks..

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Measure the drive chain tension with the rear suspension compressed halfway down.Get someone to sit on the bike.The play in the chain should be about 20-25mm.The rattle you hear will it be slapping on the swingarm.Hope this helps

Posted on Oct 01, 2010

Testimonial: "100% sound for the info thats what the noise was just checked it dis morn peace of mind now anyway thanks a mill"

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