1984 Ski-Doo Shop Manual, Page 119Get this manual
SECTION 02 ENGINE
SUB-SECTION 06 (503 ENGINE TYPE)
7O7 7727374
Cylinder flange gasket (2) Cylinder (2) Cylinder head gasket (2) Cylinder head (2) Washer 8.4 mm (4) Hexagonal nut mm (4) Washer 8.4 mm (4) Distance nut 37 mm (4) Intake manifold gasket (4) Intake manifold Lockwasher mm (4) Hexagonal bolt M8 40 mm (2) O'ring Intake manifold cover
75Hexagonal bolt M8 64 mm (2) 76Lockwasher mm (2) 77Hexagonal bolt M6 30 mm (2) 78Noise damper 79NOise damper (shon) (4) 20Noise damper (long) (4) 27Piston (2) 22Rectangular ring (2) 23Semi-trapez ring (2) 24Needle bearing (2) 25Gudgeon pin (2) 26Circlip (4) 27Intake manifold (2) 28Allen screw M8 40 mm (4)
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
Cylinder taper Cylinder out of round Cylinderpiston clearance Ringpiston groove clearance Ring end gap
TOLERANCES FITTING NEW PARTS (MIN (MAX WEAR LIMIT