Coolant Pump - Arctic Cat Cougar Service Manual

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light bulb and check for leakage. If light can be
seen around the edge of the valve, the thermostat
is defective and should be replaced.
Installation
1. If a new thermostat is being installed, test it
as described in this chapter. Even new units can
be faulty.
2. Place the thermostat into the cylinder head as
shown in Figure 10. Install the thermostat hous-
ing.
3. Install the hoses and secure with the hose
clamps.
4. Refill the cooling system as described in
Chapter Three.
Coolant Pump (All Liquid-Cooled Models
Except El Tigre)
The coolant pump impeller is mounted on the
same shaft that drives the oil injection pump. The
impeller is located under the cover (Figure 14)
located on the front of the crankcase. The 0-ring
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CHAPTER ELEVEN
seal (Figure 15) located on the cover can be
replaced without disassembling the crankcase. If
the internal seals are faulty, refer to Chapter Five
for service procedures.
Coolant Pump (El Tigre Models)
The coolant pump, located behind the engine,
is belt driven by a pulley attached to the flywheel.
Coolant pump or pulley removal may be required
for other engine service (Figure 16).
Removal
1. Remove the engine from the frame as de-
scribed in Chapter Five.
2. Remove the screws attaching the coolant
pump cover, then remove the cover (A, Figure
17).