1997 Ski-Doo Factory Shop Manual Volume Two, Page 165Get this manual
Sub-Section 05
Section 04 TRANSMISSION (PULLEY DISTANCE AND ALIGNMENT)
S-Series
Pulley Alignment Method
Driven Pulley Movement When engine slotted mounting holes do not allow to set proper pulley offset X, adjust with shims (PN 504 1082 00) between pulley and countershaft bearing support (pulley pushed toward brake disc)Engine Movement Loosen the bolts retaining engine support to the framePosition engine to obtain the specified alignmentNOTE: After alignment, adjust torque rod so it slightly contacts stopper plateDo not over tighten, it will disalign pulleys'