1979 Ski-Doo Supplementary Shop Manual, Page 110Get this manual

1979 Ski-Doo Supplementary Shop Manual, Page 110

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SECTION 04 SUB-SECTION 04 (I GNITI ON TIMING )
Roller lock nut

Loosen adaptor lock nut then holding gauge with dial face toward magneto, screw adaptor in mag side spark plug hole