1985 Ski-Doo snowmobile Service Manual, Page 187Get this manual
Section 02 ENGINE Sub-section 09 (537 ENGINE TYPE)
CLEANING
Clean all metal components In non-ferrous metal cleaner
11, Flywheel
To remove magneto housing (flywheel lock crankshaft with crankshaft locking tool (service tool) as illustrated; adjust magneto housing puller and puller ring as illustrated;
Magneto housing pui!er and ring
CAUTION: Clean armature and magneto using only clean cloth
OISASSEMBL Y
To gain access to magneto assembly, remove:mufflerrewind starterstarting pulley
IP 4208760651
NOTE: Before disassembling magneto plate, indexing marks should be located to facilitate reassem-
20, Flywheel retaining nut
To remove magneto flywheel retaining nut: lock crankshaft With crankshaft locking tool (service tool) as illustrated (magneto side piston must be at top dead center)remove magneto retaining nut