1978 Ski-Doo Shop Manual, Page 174Get this manual
SECTION 04 SUB-SECTION 02, (ENGINES) (
tLEANING _
Discard all gasketsClean all metal components in non-ferrous metal cleanerScrape off carbon formation from cylinder exhaust port, cylinder head and piston dome using wooden spatulaApply Loctite Lock'n Seal 242 on the threads of the two studs screwed above the intake portsLonger threaded part of stud should be screwed into crankcase
NOTE: The letters "AUS" (over an arrow on the piston dome) must be visible after cleaning
Clean the piston ring grooves with groove cleaner tool, or with piece of broken ring
DISASSEMBLYASSEMBLY
Prior to washer installation, apply silicone sealant around studsCD00Torque cylinder head nuts to 16 N.m (12 ft-Ibsl following illustrated sequence12