1980 Ski-Doo Shop Manual, Page 143Get this manual
SECTION 03 SUB-SECTION 02, (ENGINES)
CLEANING
Discard all gasketsC!ean all metal components in non-ferrous metal cleanerEXHAUST
Scrape off carbon formation from cylinder exhaust portcylinder head and piston dome using wooden spatula
NOTE: The letters "AUS" (over an arrow on the piston dome) must be visible after cleaning
Also make sure that the piston windows are aligned with the crankcase transfer passages when the gudgeon pin orifice is in-line with the connecting rod bore
Clean the piston ring grooves with groove cleaner toolor with piece of broken ring
DISASSEMBLYASSEMBLY
NOTE: Refer to Technical Data for component fitted
tolerance and wear limit
00 00When installing cylinder andlor cylinder headthe cylinder aligning tool must be used to ensure sealing of intake manifold and exhaust(See Tools Section)Install muffler on exhaust socket then install aligning bar
Cross torque cylinder head nuts to 20 Nom (15 It-Ibs)NOTE: Torque each cylinder head individually