1999 Ski-Doo Factory Shop Manual Volume One, Page 314Get this manual
Section 07 REAR SUSPENSION Subsection 04 (DRIVE AXLE)
REMOVAL
All Models Drain oil from chaincaseRemove chaincase cover and release drive chain tension (if applicable)Raise and block rear of vehicle off the groundRemove suspension(Refer to REAR SUSPENSION 07)
9,13, Sprocket and Half-Sprocket
To remove press fit sprockets, use press and suitable support as illustrated
2,6, End Bearing Housing and Seal
NOTE: If vehicle is equipped with speedometer, remove angle drive unit and coupling cable if necessaryOn all S-Series, remove chain and sprockets then circlip and bearing on drive axlePry oil seals from chaincase and end bearing housingUnlock sprocket from drive axle and remove with its spacer (if applicable)Push drive axle toward chaincase until end bearing housing studs clear off frame holesRelease drive axle sprocket from track and at the same time, pulling the drive axle toward the end bearing housing sideRemove drive axle from vehicle