1985 Ski-Doo snowmobile Service Manual, Page 350Get this manual

1985 Ski-Doo snowmobile Service Manual, Page 350

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Section 04 ELECTRICAL SYSTEM Sub-section 03 (SPARK PLUGS)
Racing plugscenter electrode of nickel alloy

225 mm UNClad dr Pf :2" 14mm)

Racing plugscenter alectrode of pre