1978 Ski-Doo Shop Manual, Page 206Get 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 clothTo check air gap, insert feeler gauge of 0.30-0,45 mm (,012-.018") between magnet and coil endsIt necessary to adjust, slacken coil retaining screws and relocate coil
DISASSEMBLYASSEMBLY
0With 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
When replacing breaker point set, apply light coat of grease on lubricating wick