2004 Ski-Doo REV Series Factory Service Manual, Page 146Get this manual
Section 04 ENGINE Subsection 02 (ENGINE LEAK TEST AND DIMENSION MEASUREMENT)
Crankshaft Deflection in Center of Crankshaft
ENGINE TYPE All MAXIMUM IN CENTER OF CRANKSHAFT mm (in) 0.08 (.0031)
CHECKING CRANKSHAFT ALIGNMENT
Install degree wheel (PN 529 035 607) on crankshaft endRemove both spark plugsInstall TDC gauge (PN 414 104 700) in spark plug hole on MAG sideBring MAG piston at top dead centerRotate degree wheel (not crankshaft) so that 360 mark aligns with center of crankcaseScribe mark on crankcaseRemove TDC gauge and install it on center cylinderBring PTO piston to top dead centerDegree wheel must rotate with crankshaft10 20 30 40 50 60 70 90 80
NOTE: Crankshaft deflection cannot be correctly measured between centers of latheIf the deflection exceeds the specified tolerance, crankshaft should be repaired or replaced