2006-2008 Polaris Snowmobiles FS/FST Service Manual., Page 135Get this manual

2006-2008 Polaris Snowmobiles FS/FST Service Manual., Page 135

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FSFST Engine Measure Valve Stem Runout Out of specification: Replace valveMeasure Cylinder Block Flatness Out of specification: Replace cylinder blockNOTE: Do not re-surface (shave) cylinder block