2002 Ski-Doo Shop Manual Volume One, Page 148Get this manual
Subsection 05
Section 04 ENGINE (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
Measuring (on bench)
Once engine is disassembled, check crankshaft deflection on V-shaped blocksIf deflection exceeds the specified tolerance, it can be worn bearings or bent crankshaftRemove crankshaft bearings and check deflection again on V-shaped blocks to determine the defective part(s)See measurement in following illustration
Crankshaft Deflection in Center of Crankshaft
ENGINE TYPE 443 277 and 503 593 MAXIMUM IN CENTER OF CRANKSHAFT mm (in) 0.03 (.0012) 0.08 (.0031) 0.05 (.002)
NOTE: Crankshaft deflection cannot be correctly measured between centers of latheIf the deflection exceeds the specified tolerance, crankshaft should be repaired or replaced
CONNECTING ROD BIG END AXIAL PLAYA01C0RD