Question about 2003 Yamaha YZ 125

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How do you change the crank - 2003 Yamaha YZ 125

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Pull the engine out of the frame. Remove the top end. Remove left and right side case covers. Remove the clutch, crank drive gear, shift shaft assembly, kick start assembly, water pump, rotor, stator base assembly, sprocket and miscellaneous other small items. Remove all case screws then split the case halves using a case splitter tool. Be sure to install new crank bearings and seals. You can see an exploded diagram of the engine at the following website.Please rate my answer, thanks.

Posted on Aug 25, 2010


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