3.9
MAINTENANCE
manifold.Only open slightly, do not remove the screw.
5. Cycle the RPM from idle to 3000-4000 so that the coolant
can move around the system and push out the air from the
system.
6. Tighten the bleed screw when coolant starts to come out of
the screw area.
7. Turn off the machine and release the parking brake.
8. Allow the system to cool completely and recheck the
coolant level.
NOTE: It is important that the thermostat stays
open! When the thermostat opens it will draw in cold
coolant from the heat exchangers and the cold
coolant may close the thermostat again. Make sure
the thermostat opens and stays open! Cycle the
RPM from idle to enough RPM (4000) to get coolant
to flow but not enough RPM to engage the clutch.
This allows air to bleed from the rear crossover tube.
It is important to get enough coolant flow to purge
the air from the front close-off cooler and observe
this air reaching the bottle.
NOTE: ON EDGE MODELS: Once the thermostat is
open tip the snowmobile slightly on its right side
and cycle the RPM from idle to enough RPM (4000)
to get coolant to flow but not enough RPM to engage
the clutch. Then tilt the machine slightly on its left
side so that the coolant bottle is the highest point in
the cooling system and cycle the RPM from idle to
enough RPM (4000) to get coolant to flow but not
enough RPM to engage the clutch.
BEARING FIT
Any time crankshaft bearing failure occurs and the case is to
be reused, Polaris recommends checking the bearing fit into
the case halves using the following procedure.
With case halves cleaned, press a replacement bearing into
each of the main bearing journals to determine a basic amount
of press fit.
Do a comparison check of all journals by manually forcing the
bearing into the bearing seats noting if any are noticeably
loose or tight. Normal hand installation will be an indication of
the recommended interference fit. If the bearing falls out of the
case when the case is inverted, or if the crankcase bearing
surface is severely galled or damaged, the case should be
replaced.
NOTE: Crankcase bearing interference fit is .001-
.002" (.026-.051mm).
500 Fuji
700/900 Libertyt
500/600 Libertyt
WARNING
When performing the following checks and adjust-
ments, stay clear of all moving parts to avoid
serious personal injury. Never remove the pressure
cap when the engine is warm or hot. If the pressure
cap is to be removed, the engine must be cool. Se-
vere personal injury could result from stream or hot
liquid.
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