1986 Ski-Doo Factory Shop Manual, Page 205Get this manual
Section 02 ENGINE Sub-section 09 (537 ENGINE TYPE)
Apply some Illhium grease or equivalent on seal lipsPosition all seals with shielded portion towards water pump using pusher (PIN 420876510)Align distance ring opening with crankcase draining hole Isee note and illustration}Push seals and distance ring assembly against bearing
7, Rotary valve shaft
To install rotary valve shaft proceed suitable toolS: pusher PIN 420 876 600water pump seal sleeve PIN 420 876 490Rotary valve
qS follows with the
the draining hole, thiS mean that oil seal or coolant seal leaks
NOTE: 35 of the distance between first and second seals must be filled with lithium grease or equivalent
NOTE: The draining hole is used to detect seal mal-
fUnctionIf you notice oilor coolant at the exit of
PIN 420 876 490