2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 223Get this manual

2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 223

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THERMOSTAT

INSPECTION 1 Inspect: Thermostat Does not open at 71 85_C (160 185_F)ReplaceInspection steps: Suspend the thermostat in container filled with waterS Slowly heat the waterPlace