Question about 2003 Honda XR 125 L

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Just rebuilding 2001 honda xr 80 and need to know how to set up the timing? Thanks Wayne

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Valve timing is done with the piston at Top Dead Center. The cam lobes should be pointing downward. There will be a mark or marks on the cam gear for alignment of the gear. If only one mark, it should be at the top and inline with the centerline of the crankshaft. If two marks, they sholud be parallel with the surface of the cylinder. Any slack in the timing chain should be at the carb side. When the cam gear is in the proper position, rotate the cam slightly to line up the screw holes for mounting. After mounting, remove the spark plug and turn the engine over by hand to be sure the setting is correct. If the crankshaft locks up it is because the piston is hitting a valve. Re-do the cam timing. Please rate my answer. Thanks.

Just rebuilding 2001 honda xr 80 and need to know - ebb4249.gif

Posted on Sep 11, 2010

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