1986 Ski-Doo Factory Shop Manual, Page 17Get this manual
Section 01 TOOLS 02 (SERVICE TOOlSl
SERVICE TOOL
PURPOSE
APPLICA TION
Cylinder aligning tools
To align cylinders
Twin cylinder engines
377.447,503 engines 420876 171
.462 engine 467,532,537 engines 420876 175 420 876 570
Screw M8 25 mm 377 ,503 engines