1984 Ski-Doo Shop Manual, Page 60Get this manual
SECTION 02 ENGINE
SUB-SECTION 03 (377 TYPE)
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Stud MB 173 (B) Upper crankcase Rubber plug (5) Cable grommet 0" seal PT0side 8all bearing 620.6 (2) Shim (2) Spacer Crankshaft Woodruff key 3, "Loctite 242" 8all bearing 620.7 Oil seal, magneto side Lock washer 22 mm "Locrite 242"
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HexNut 22 1,5 "0" ring Lower crankcase "Loctire 515" Lock washer mm (10 Hexscrew MB 45 (2) "Locrire 242" Stud M10x 25 (4) Lock washer 10mm (4) Hexnut M10(4) Hexscrew MB 70(B) Lock washer mm (B), Hexscrew M6 40(4) AIen screw M6 30(4) Ring gear
CLEANING
Discard all seals, gaskets and "0" ringsClean all metal components in non-ferrous metal cleaner Remove old sealant from crankcase mating surfaces with Bombardier sealant tripperCAUTION: Never use sharp obj ect to scrape away old seal ant as score marks incurred are detrimental to crankcase sealing
INSPECTION
The inspection of the engine bottom end must include the following measurements:
TOLERAN CES WEAR LIMiT FITTING NEW PARTS (MAX (MIN N.A' .20 mm 1.0078") NA .53 mm 10208") .08 mm 10032") 1.0 mm 10394")