1985 Ski-Doo snowmobile Service Manual, Page 351Get this manual

1985 Ski-Doo snowmobile Service Manual, Page 351

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Section 04 ELECTRICAL SYSTEM Sub-section 03 (SPARK PLUGS)
SPARK PLUG ANALYSIS

Overheated lIight greyl
A 000004 010

Norma! (brownish I

Fouled (blackl<