2001 Ski-Doo Factory Shop Manual Volume Three, Page 191Get this manual
Section 05 TRANSMISSION Subsection 08 (GEARBOX)
Insert spring pin no21 in reverse axle up to inside diameterPress needle bearing in 19-tooth sprocketInstall ring no24 and 19-tooth sprocket on reverse axle1
A15D1WA
1Reverse axle ass'y 2Sliding gear ass'y
Install shim no13 and 22-tooth sprocket (drive) no12 then tighten castellated nut no10 and conical spring washerSecure with new cotter pinInstall chain no28, 44-tooth sprocket no34 and its spacer no38Spacer's large outer diameter must be against sprocketInsert coupling shaft no32 in 44-tooth sprocketInstall needle bearing no15 (wider one) in reverse gear no18Install reverse axle no20 (assembly) making sure to properly position spring pin in housing slotInstall alignment rod no19, reverse gear no18 and spacer no24Drive sprocket hole and driven gear hole must be aligned to insert alignment rodMount chain tensioner (assembly) to adjustment screw already fixed to gearboxAssemble fork no17 to axle using spring pins no16Apply grease on O-rings