1997 Ski-Doo Factory Shop Manual Volume Three, Page 134Get this manual
Section 04 TRANSMISSION Sub-Section 06 (BRAKE)
REMOVAL
BRAKE DISC REMOVAL Brake disc can be withdraw without removing caliperProceed as follows: Remove belt guard, belt and driven pulley Remove air silencers Unbolt bearing support no19 from chassis Open chaincase and remove upper sprocket Pull countershaft toward driven pulley side to free from chaincase and disc Remove discCOUNTERSHAFT REMOVAL Proceed the same as for brake disc removal but unlock bearing collar no18 on driven pulley sideA03D29A