1984 Ski-Doo Shop Manual, Page 43Get this manual
SECTION 02 ENG INE SUB-SECTION 02 (277 ENGINE TYPE)
18,19, Crankcase bolts M8 74M8 55
Inside lip facing towards the crankcase
At assembly, torque to 21 N.m (15 ftlbs) following illustrated sequence
Chamfered side towards the crankshaft bearing