2005-2007 Polaris Ranger 500 service manual, Page 92Get this manual
ENGINE 6Remove oil passage O-Ring (C)3Remove cam chain (E)Inspect chain for worn or missing rollers or damageStretch chain tight on flat surface and apply 10 lb(4.53 kg) loadMeasure length of 20 pitch section of chainReplace if worn past service limit
7Remove large sealing O-Ring from outer edge of stator plateChain Service Limit: 5.407" (13.7 cm) 4Using the special socket, remove the crankshaft slotted nut
NOTE: The slotted nut is left hand thread567Remove cam chain drive sprocket and woodruff key from crankshaftInspect sprocket teeth for wear or damageInspect woodruff key for wear