1978 Ski-Doo Shop Manual, Page 123Get this manual
SECTION 04 SUB-SECTION 02 (ENGINES) (
remove bearing from crankshaft use protective cap and special puller as illustrated(See Tool Section)
Bearing puller
NOTE: Prior to magneto side bearing installation, determine crankshaft end-play and install required shirnts) on crankshaft extension
At assembly, place bearings into an oil container and heat the oil to 100C WOF) for to 10 minThis will expand the bearings and permit them to slide easily on the shaftInstall bearings with groove outwardG)At assembly apply light coat of lithium grease on seal lips then position oil seal with outer surface flush with crankcaseTo remove or install magneto retaining nut, lock crankshaft in position with special hold-on support as illustrated(See Tool Section)