2005-2007 Polaris Ranger 500 service manual, Page 104Get this manual
ENGINE IMPORTANT: CAMSHAFT TIMING NOTE: In order to time the camshaft to the crankshaft, the piston must be precisely located at Top Dead Center (TDC)4Loop the cam chain on the cam sprocket with the dots on the sprocket facing outward and the alignment pin notch facing directly upwardPin Notch
Camshaft Timing
1Apply Polaris Premium Starter Drive Grease (PN 2871460) to the camshaft main journals and cam lobesLubricate automatic compression release mechanism with clean engine oil(To install the compression release mechanism, refer to Page 3.21)Install the camshaft with the lobes facing downward and the sprocket alignment pin facing upward5