2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 149Get this manual

2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 149

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CYLINDER AND PISTON
Piston-to-cylinder clearance 0.0100.025 mm (0.00040.0010 in) Limit 0.15 mm (0.006 in) fIf out of specification, rebore or replace the cylinder, and replace the piston and pis