1978 Ski-Doo Shop Manual, Page 153Get this manual
SECTION 04 SUB-SECTION 02 (ENGINES)
MAGNETO
CLEANING
Clean all metal components in non-ferrous metal cleanerCAUTION: Clean armature and magneto using only clean clothHold-on support
To remove or install magneto retaining nut, lock
crankshaft in position with special hold-on support, as illustrated (See Tools Section)
DISASSEMBLYASSEMBLY
To facilitate timing procedure, perform primary adjustment by matching crankcase and armature plate marks
With magneto retaining nut removed and hold-on support in place, install special puller onto hubTighten_ puller bolt and at same time, tap on bolt head using hammer to release magneto from its taper
Hold-on support