1999 Ski-Doo Factory Shop Manual Volume Two, Page 332Get this manual
Section 07 REAR SUSPENSION Subsection 05 (DRIVE AXLE)
All Models Ensure to align indexing marks of each sprocket when assembling
6,8, Drive Axle and Seal
When assembling drive axle, always position new seal on each end of drive axle (if applicable)Locate seal lip as illustrated1 2
A24D05A
TYPICAL 1Indexing marks aligned
A00F0CA
The maximum desynchronization for the sprockets is 1.5 mm (116 in)To check this tolerance, place axle assembly on plane surface and measure the gap between sprocket tooth and surface