1985 Ski-Doo snowmobile Service Manual, Page 180Get this manual
Section 02 ENGINE SUb-section 09 (537 ENGINE TYPE)
1 67 10 11 12
Cap nut M8 (12) Cvlmder head Stud M6 15 (21 Coolant outlet colar Loctite 242 blue (medium strength) Lock washer mm (4) Nut M6 (4) Gasket IO-r,ng) (21 Gasket (2) Cap nut M8 (8) Flat washer 8.4 181 Cvlinder (2)
13 14 15 16 17 18 19 20 21 22 23
Cvlmdercrankcase gasket (2) L-rmg Rectangular-ring Piston Gudgeon pin Circlip 141 Needle bearing Cvlinder stud M8 79 (8) Stud (head) M8 50 (12) Gasket Water outlet socket
CLEANING
Discard all gaskets and a-ringsClean all metal components in non-ferrous metal cleanerScrape off carbon formation from cylinder exhaust port, cylinder head and piston dome using wooden spatulaMEASUREMENTS
Cylinder taper Cylinder out of round Cylinderlplston clearance Rlnglpiston groove clearance Ring end gap
TOLERANCES FITTING NEW PARTS (MAX (MIN
N.A NA N.A N.A
WEAR LIMIT
08 mm 10031"1 05 mm 10020"1 20 mm 10079"1 20 mm 10079"1 10 mm 10394"1
NOTE: The letters AUS (over an arrow on the piston dome) must be visible after cleaning