2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 151Get this manual

2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 151

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CYLINDER AND PISTON
CHECKING THE PISTON PIN 1 Check: Piston pin Blue discolorationgroovesReplace the piston pin and then check the lubrication system2 Measure: Piston pin outside diameter Out of