1999 Ski-Doo Factory Shop Manual Volume Two, Page 129Get this manual
Section 04 ENGINE Subsection 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
ENGINE DIMENSION MEASUREMENT
This section covers all engine types
CYLINDER HEAD WARPAGE
ENGINE TYPE All MAXIMUM 0.05 mm (.002 in)
Measuring 16 mm (58 in) from top of cylinder with cylinder gauge, check if the cylinder out of round is more than the specified dimensionIf larger, cylinder should be rebored and honed or should be replacedNOTE: Be sure to restore the chamfer around all cylinder sleeve port openingsCYLINDER TAPER
ENGINE TYPE All MAXIMUM 0.10 mm (.004 in)
Compare cylinder diameter 16 mm (58 in) from top of cylinder to just below its intake port areaOn rotary valve engines, measure just below auxiliary transfer port, facing exhaust portIf the difference exceeds the specified dimension the cylinder should be rebored and honed or should be replacedNOTE: Be sure to restore the chamfer around all cylinder sleeve port openings