1999 Ski-Doo Factory Shop Manual Volume Two, Page 59Get this manual

1999 Ski-Doo Factory Shop Manual Volume Two, Page 59

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Section 03 TROUBLESHOOTING Subsection 02 (ENGINE)
ENGINE DETONATION AT MAXIMUM RPMNORMAL USE1 Check which type of fuel is usedaOctane number is too low andor alcohol level is too highUse recomme