2008 Polaris ATV Predator 50, Sportsman Outlaw 90 Service Manual, Page 60Get this manual

2008 Polaris ATV Predator 50, Sportsman Outlaw 90 Service Manual, Page 60

ENGINETRANSMISSION 4Measure free length of the inner and outer springs with Vernier caliper, Ill.1Check spring for squareness as shown in Ill.2Replace spring if measurements are out of specificationInner Outer

Valve Inspection
12Remove all carbon from valve with soft wire wheelCheck valve face for runout, pitting, and burnt spotsCheck for bent valve stems using "V" blocks and dial indicator