2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 446Get this manual

2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 446

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Section 08 ELECTRICAL Subsection 02 (SPARK PLUGS)
HEAT RANGE
The proper operating temperature or heat range of the spark plugs is determined by the spark plug ability to dissipate the heat