2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 137Get this manual

2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 137

CAM CHAINCAMSHAFT INSTALLATION
Install the cam chain over the crankshaft
CAUTION: Serious engine damage may result if the camshaft is not properly timed to the crankshaftIMPORTANT CAMSHAFT TIMING NOTE: In order to time the camshaft to the crankshaft, the piston must be precisely located at Top Dead Center (TDC)
CAMSHAFT TIMING

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