2005 Polaris Sportsman 400/500 Service Manual, Page 88Get this manual

scratch the ring lands
2Inspect the top of the cylinder for warpage using straight edge and feeler gaugeCylinder Warpage:

.002 (.05 mm) 3Inspect cylinder for wear, scratches, or damage
12 Down From Top of Cylinder Y

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives