1989 Ski-Doo Repair Manual, Page 46Get this manual
Section 02 ENGINE Sub-section 01 (247 ENGINE TYPE)
NOTE: Engine must be removed from chassis to perfom the following procedures
INSPECTION
The inspection of the engine bottom end must include the following measurements:
TOLERANCES MEASUREMENTS FITTING NEW PARTS WEAR LIMIT
CLEANING
Discard all oil seals and gasketsClean all metal components in non-ferrours metal cleaner
DISASSEMBLY
General
To remove drive pulley, refer to "Drive Pulley", section 03-03To remove magneto, refer to "Magneto" in this sectionCrankshaft deflection Connecting rod big end axial play Crankshaft end play
0.10 mm 1.0039") 1.0 mm 1039")
0.20 mm 1.008") 0.10 mm 1.004")