1985 Ski-Doo snowmobile Service Manual, Page 52Get this manual
Section 02 ENGINE Sub-section 02 (253 ENGINE TYPE)
1Injection oil tank 2Oil tank cap 3O-ring 4Retainer clip 5Clip (2) 6Hexagonal flanged elastic stop nut mm (2) 7Screw 8Washer 9Clip 10 Grommet 11Male connector 72Oil line 2" (50mm) 13Oil line 3" (75 mm) 14Spring clip (3) 15 Spring clip 16Filter 17 Oil pump mounting flange 18Oil pump 19Washer 6.2 (2) 20 Oil pump gear 27 teeth 21Lock nut mm 22Taptite screw M5 16 121 23Needle roller 84 178 24 Washer 4.3 259 teeth gear
26Oil banjO gasket (21 27BanjO 28BanjO bolt 29Oil line 73" (330mm! 30 Clamp (2) 31Taptite screw M5 20(4) 32.0-nng 33Plate 34Screw with lock washer (4) 35Retainer 36O-ring 37Cam casing plate 38 Washer 39Hexagonal head cap screw 40 Spnng 41Washer 42Lever 43 Lock washer 44 Hexagonal nut mm 45 Seal 46 Gasket set 47Injection oil 11 liter) 48Retainer plate (underneath frame) 49Rivet (2)
CLEANING
Clean all metal components in non-ferrous metal cleaner