1984 Ski-Doo Shop Manual, Page 17Get this manual
SECTION 01 TOOLS SUB -SECT ION 02 (SERVIC TOOLS)
Magneto housing holderAll twin cylinders F.e 420 876 080
Twin cylinder engine types
420 876 065 Puller extension pin529 004 800 To remove drive pulley from crankshaft (use with puller screw 529 0028 00) 277 engine type with square shaft drive pulley(