1985 Ski-Doo snowmobile Service Manual, Page 207Get this manual
Section 02 ENGINE Sub-section 10 (ENGINE DIMENSIONS MEASUREMENT)
- Install the bearing retainer into its groove on MAG side
CRANKCASEROTARY VALVE GAP
ENGINE TYPE
All 1985 liquid cooled
Install bearing retainer Into Its groove
MINIMUM
0.27 mm (0011")
MAXIMUM
0.48 mm (0019")
To measure this gap use feeler gage inserted between rotary valve and upper crankcase with the rotary valve cover in place without it's O-ringCheck the most surface as possibleFollow the same procedure with the lower crankcase