1984 Ski-Doo Shop Manual, Page 115Get this manual
SECTION 02 ENGINE
SUB-SECTION 06 (503 ENGINE TYPE)
7Engine Rotax type 50.3 2Stud M7D 25 (4) (Blizzard 550.0MX) Stud M7D 45 (4) (Alpine) 3Engine bracket 4Distance sleeve 5Flat washer 705 mm 27 (4) 6Lockwasher 70mm (4) 7Hexagonal nut 70mm (4) 8Carriage bolt 38" 76 71 4" (2) 9Internal tooth dished washer (2) 7DHexagonal elastic stop nut 38" 76 (4) 7Screw WIKnurling (6) 72Retainer plate 73Hexagonal elastic stop nut 516" 24 (6) 74Cross support 75Leaf spring 76Carriage bolt 711674 234" (threaded 77Retainer plate (2) 78Washer (4) 79Damper (4) 20 Threaded bushing (27Rubber sleeve (2) 22Sleeve 23Hexagonal elastic srop nut 7116" 74 (2) 24Carriage bolt 38" 24 12" (4) 25Threaded spacer bushing (4) 26Insulator rubber (4) 27Flat washer 2564" 78" 090 (4) 28Hexagonal elastic srop nut 38" 24 (4) 29Rubber mount 3DWasher 37Connector 32Connector ring 33Rivet (3) 34Clamp (3) 35Elbow 36Hose 4" 170.2 mm) 37Gasket (4) 38Exhaust manifold 39Lock washer mm (4)