1985 Ski-Doo snowmobile Service Manual, Page 84Get this manual
Section 02 ENGINE Sub-section 04 (447 ENGINE TYPE)
CLEANING
Clean all metal components in non-ferrous metal cleaner
18, Magneto flywheel
To remove magneto housing (flywheel):lock crankshaft with crankshaft locking tool (service tool) and adjust magneto housing puller and puller ring (service tooll as illustratedr- ,
.r CAUTION: Clean armature and magneto using
only clean cloth
DISASSEMBLY
19,20,22, V-belt pulley, starting pulley,nut
To gain access to magneto assembly, remove: Injection oil line rewind starter starting and v-belt pulley
PiN 420 876 655
NOTE: Before disassembling magneto plate, indexing marks should be located to facilitate reassembly
To remove magneto flywheel retaining nut: lock crankshaft with crankshaft locking tool (PIN 420 876640) as illustrated (magneto side piston must be at top dead center)AOO9002012