2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 125Get this manual

2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 125

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CYLINDER HEAD
CHECKING THE CYLINDER HEAD 1 Eliminate: Combustion chamber carbon deposits (with rounded scraper) NOTE: Do not use sharp instrument to avoid damaging or scratching: Spark plug bore