1997 Ski-Doo Factory Shop Manual Volume One, Page 83Get this manual
Section 03 ENGINE Sub-Section 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
A01C0PA
RING END GAP
Position ring half way between transfer ports and intake portOn rotary valve engines, position ring just below transfer portsNOTEIn order to correctly position the ring in the cylinder, use piston as pusherUsing feeler gauge, check ring end gapReplace ringIf gap exceeds specified tolerance, refer to TECHNICAL DATA 09-02'
A01C55A
A16 mm (58 in)
The difference between these measurements should be within specified toleranceRefer to TECHNICAL DATA 09-02Measurement (fitting new parts) With an inside micrometer, measure cylinder diameter above the exhaust portWith micrometer, measure the piston diameter perpendicularly (90) to piston axis and mm (18 in) above bottom edgeThe difference of both measurements is the clearance