2001 Ski-Doo Mini Z Factory Shop Manual, Page 82Get this manual
Section 04 ENGINE Subsection 05 (COMPRESSION TEST AND ENGINE DIMENSION MEASUREMENT)
CRANKPIN (outside diameter)
STANDARD 25.98 mm (1.023 in) SERVICE LIMIT 25.92 mm (1.020 in)
Measure crankpin outside diameter with micrometer, as shown in the next photo
A31C21A
1Exhaust valve cam 2Intake valve cam
CAMSHAFT (outside diameter)
STANDARD 13.984 mm (0.5506 in) SERVICE LIMIT 13.916 mm (0.5479 in)