1985 Ski-Doo snowmobile Service Manual, Page 77Get this manual
Section 02 ENGINE Sub-section 04 (447 ENGINE TYPE)
1Hexagonal nut MB (5) 2Distance nut MB 27.5 (3) 3Cone sleeve (B) 4Cylinder head (2) 5Gasket, cylinder head (2) 6Support damper (1) 7Cylinder with sleeve (2) BGasket, intake manifold (4) 9Intake manifold (1) 10Lock washer mm (2) 11Hexagonal screw M8 40(2) 12Lock washer mm (2)
13141516
1 7lB1920 21222324
Hexagonal screw MB 74 (2) Hexagonal screw M6 25 (2) Lock washer mm (2) Intake cover Rubber ring Gasket, cylinder flange (2) Semi-trapez ring (2) Rectangular ring (2) Piston (2) Gudgeon pin (2) Circlip (4) Needle cage (2)
TOLERANCES WEAR LIMIT N.A N.A
CLEANING
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 spatulaMEASUREMENTS
FITTING NEW PARTS (MIN (MAX N.A NA
Cylinder taper Cylinder out of round Cylinderpiston clearance Ringpiston groove clearance Ring end gap
.08 mm 10031") .05 mm (0020") .20 mm 10079") 20 mm 10079") 1.0 mm (0394")