2001 Ski-Doo Factory Shop Manual Volume One, Page 133Get this manual
Subsection 04
Section 04 ENGINE (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
ENGINE DIMENSION MEASUREMENT
This section covers all engine types
CYLINDER OUT OF ROUND
ENGINE TYPE All MAXIMUM 0.08 mm (.003 in)
CYLINDER HEAD WARPAGE
ENGINE TYPE MAXIMUM 0.05 mm (.002 in) per 50 mm (2 in) of surface 0.5 mm (.020 in) for total length of cylinder head
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 openingsCheck gasketed surface of the cylinder head with straightedge and feeler gauge
CYLINDER 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