2009 Polaris Outlaw 450/525 Service Manual, Page 210Get this manual

2009 Polaris Outlaw 450/525 Service Manual, Page 210

5-9 Checking the piston Replace the piston if oil consumption is high or the piston skirt is excessively grooved If the piston
the piston ring end gap Insert the piston ring in the cylinder and align with the piston (approx10 mm under the upper edge
of the cylinder) Use feeler gauge to measure the end gapCompression ringmax0.80 mm Oil scraper ringmax1.00 mm If the end
gap is larger than indicated above, check the piston and cylinder for wearIf the piston and cylinder wear is within the tolerance
limits, replace the piston ring Checking the oil pumps for wear Lubricated inner and outer rotors with the marks facing the