1978 Ski-Doo Shop Manual, Page 111Get this manual
SECTION 04 SUB-SECTION 02 (ENGINES) (
BOTTOM END
CLEANING
Discard all oil seals and gasketsClean all metal components in non-ferrous metal cleaner
DISASSEMBLYASSEMBLY
General
Refer to Technical Data Section for component fitted tolerance and wear limitIf necessary, refer to Drive Pulley Section to remove drive pulley