1985 Ski-Doo snowmobile Service Manual, Page 81Get this manual
Section 02 ENGINE Sub-section 04 (447 ENGINE TYPE)
1Stud M8 173 (8)
2Upper crankcase
34567B 91011 12131415Rubber plug (5) Cable grommet Oil seal 10side Ball beanng 6206 (2) Shim (2) Spacer Crankshaft Woodrufff key 3.7 Loccice 242 Ball beanng 6207 Oil seal, magneto side Lock washer 22 mm Loccice 242
16 Hexagonal nut 22 1.5 77 O-rm.Q 18 Lower crankcase :9 LocfIle 515 20 Lock washer mm 110) 21 Hexagonal screw MB 45 (2) 22 Locflle 242 23 Stud 10 25 (4) 24 Lock washer 10 mm (4) 25 Hexagonal nut Ml0 (4) 26Hexagonal screw MB 70 IB) 27 Lock washer mm (8) 28Hexagonal screw M6 40 (4) 29Allen screw M6 30 (4)
CLEANING
Discard all seals, gaskets, and O-ringsClean all metal components in non-ferrous metal cleanerRemove old sealant from crankcase mating surfaces with Bombardier sealant stripper,CAUTION: Never use sharp object to scrape away old sealant as score marks incurred are detrimental to crankcase sealing
INSPECTION
The inspection of the engine bottom end must include the following measurements: