2001 Ski-Doo Factory Shop Manual Volume One, Page 138Get this manual
Section 04 ENGINE Subsection 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
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 PLAY
ENGINE TYPE 377, 443 and 503 593 NEW PARTS MIN- MAX0.200.53 mm (.008.021 in) 0.390.74 mm (.015.029 in) WEAR LIMIT 1.0 mm (.039 in) 1.20 mm (.047 in)
A01C3GA
Using feeler gauge, measure distance between thrust washer and crankshaft counterweightIf the distance exceeds specified tolerance, repair or replace the crankshaft