2005 Polaris Sportsman 400/500 Service Manual, Page 87Get this manual
ENGINE 6Tap cylinder lightly with plastic hammer in the reinforced areas only until loose7Rock cylinder forward and backward and lift it from the crankcase, supporting piston and connecting rodSupport piston with Piston Support Block (PN 2870390)8Remove dowel pins from crankcase
PISTON REMOVAL
3Loosen hose clamps and remove coolant inlet hose4Remove the two mm cylinder base bolts