1980 Ski-Doo Shop Manual, Page 95Get this manual
SECTION 03 SUB-SECTION 02, (ENGINES)
BOTTOM END
CLEANING
Discard all oil seals, gaskets, "0" rings and sealing ringsBecause of cap nuts, cylinder studs have to be screwed Into crankcase so that they do not protrude further than 15.6 cm (6.140"), If it is not possible to obtain this length, washer must be added between cylinder head cap and cap nut, Apply "Loctite 242" on the threads of the two studs screwed above the intake ports
Clean alJ 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 rankcase sealing
DISASSEMBLYASSEMBLY
0Crankcase halves are factory matched and therefore, are not Interchangeable or available as single halves, Prior to Joining of crankcase halves, apply" Loctite 515" (no, 413 7027 00) on mating surfacesCAUTION: Before joining of crankcase halves besure that crankshaft rotary valve gear is well engaged with rotary valve shaft gearPosition the crankcase halves together and tighten nuts by hand then install armature plate (tighten) on magneto side to correct align the crankcase halvesTorque bolts to 22 N'm (16 ft-Ibs) following illustrated sequenceLonger threaded part of stud should be screwed into crankcaseTo remove bearings from crankshaft, use protective cap and special puller as illustrated,