2004 Skidoo Tundra Skandic Series Service Manual, Page 173Get this manual
Section 04 ENGINE Subsection 05 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
CHECKING SURFACE FLATNESS
Intake manifold, intake manifold cover can be checked for perfectly mating surfacesLay part on surface plate (marble, mirror or thick glass plate)Holding down one end of part, try pushing down the other endIf any play is felt, part must be rectified
CHECKING CRANKSHAFT ALIGNMENT
Install degree wheel (PN 414 352 900) 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 PTO side cylinderBring PTO piston to top dead centerDegree wheel must rotate with crankshaft10 20 30 40 50 60 70