2005 Ski-Doo Racing Handbook, Page 238Get this manual
SECTION 05ENGINE PREPARATION
NOTE: When the combustion chamber is filled to top of spark plug hole, it includes an amount of 2.25 cc corresponding to the spark plug well Repeat the procedure for the other cylinderENGINE TYPE 593 HOSDI 593 HOSDI 793 HO MX 793 HO SUMMIT COMBUSTION CHAMBER VOLUME (cc) (up to top thread of spark plug hole) 28.6 1.291.43 26.4 1.2 38.51.93 34.81.74
F01D0NA
Install thicker or thinner cylindercrankcase gasket (refer to Parts Catalogs) in order to obtain the specified combustion chamber volume or the nearestENGINE TYPE 593 HO 793 HO CHANGE IN COMBUSTION CHAMBER VOLUME (cc) for every 0.1 mm (.004 in) of gasket thickness 0.41 0.53
1Measuring perpendicularly (90) to piston pin axis A15 mm (.590 in)