Question about 2003 Yamaha YZ 250

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Timing chain how do you take the mag. and fly wheel off to chang timing chain for a 99 yamaha warrior 350 atv

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You need a fly wheel puller.

Posted on Aug 01, 2009

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Hi, Anonymous and the usual suspects are:
1. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
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My kolpin fourwheeler will idle, but stalls when i give it gas


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How do you set the timing on a yamaha warrior 350 atv


hello, get piston up on tdc, hold finger on spark plug hole turn engine untill finger blows off,that should be compression stroke. take screwdriver in hole make sure piston is all the way up, take timing cover off top gear, there is a v mark inside the motor , make sure gear marks and timing chain is all aligned upp, timing chaing should have a different colored link, aligned this with mark on gear-chain and the mark on the motor, it looks like a v or a point, you have to remone the top gear cover to see this, once they are all aligned it should be in time, piston has to be up all the way on compression stroke, really its pretty simple....

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2 Answers

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