1979 Ski-Doo Supplementary Shop Manual, Page 136Get this manual

1979 Ski-Doo Supplementary Shop Manual, Page 136

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SECTION 05 SUB-SECTION 02 (SPARK PLUGS)

Overheated (light grey!
_ CAU TI ONSevere engine damage can occur if wro ng heat range plug is used: too "h ot" plug ill result in overheatin