2003 Ski-Doo ZX Series Factory Shop Manual, Page 331Get this manual
Section 07 REAR SUSPENSION Subsection 04 (DRIVE AXLE)
8, Bearing
Always push bearing by inner race
A00F0DA
TYPICAL
The bearing no8 must have its shield facing the sprocketThe bearing no1 must have its shield facing right side (cover)
LUBRICATION
Lubricate end housing bearing with synthetic grease (PN 413 711 500)