1997 Ski-Doo Factory Shop Manual Volume Three, Page 21Get this manual

1997 Ski-Doo Factory Shop Manual Volume Three, Page 21

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Section 02 TROUBLESHOOTING Sub-Section 02 (ENGINE)
4 Melted andor perforated piston dome; melted section at ring end gapa.When piston reaches TDC, mixture is ignited by heated areas in combustio