2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 17Get this manual

2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 17

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SPARK PLUGS
SPARK PLUGS 1 Remove: Spark plug caps Spark plugs 2 Inspect: Electrodes DamagewearReplace the spark plugS Insulator color 3 Measure: Spark plug gap Out of specificationRegapUse wire