2004 Ski-Doo REV Series Factory Service Manual, Page 130Get this manual
Section 04 ENGINE Subsection 01 (593, 593 HO, 593 HO SDI AND 793 HO ENGINE TYPES)
NOTE: Engine must be removed from chassis to perform the following procedures
CLEANING
Discard all oil seals, gaskets, O-rings and sealing ringsClean all metal components in non-ferrous metal cleanerUse gasket remover (PN 413 708 500) accordinglyRemove old paste gasket from crankcase mating surfaces with gasket remover (PN 413 708 500)CAUTION: Never use sharp object to scrape away old sealant as score marks incurred are harmful to crankcase sealing
DISASSEMBLY
General
Remove cylinder head and cylinderRemove rewind starterTo remove magneto, refer to CDI SYSTEM593 HO, 593 SDI and 793 HO Engine Types Remove oil seal cover no1
A32CARA
1Half ring 2Puller ring