1985 Ski-Doo snowmobile Service Manual, Page 17Get this manual
Section 01 TOOLS Sub-section 02 (SERVICE TOOLS)
Injection pump gear holder
All injection engines
253, 377, 447503 engines 420 876 690
AOOOOO.2041
462, 467, 532537 engines 420 277 900
AOOOOO2042
AOOOOO1043