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7.4
Section 7
Cooling System
Figure 7-8. Removing Overflow Reservoir.
7. Reinstall the reservoir, inserting the two lower
molded protrusions into the mounting holes in the
lower support bracket. Engage the top bracket
around the upper protrusion of the reservoir. Hold
it in this position and torque the two screws to 7.3
N·m (65 in. lb.).
8. Reinstall the reservoir cap. Do not kink/pinch the
hose.
9. Flush the cooling system (See Flushing Cooling
System).
Flushing Cooling System
NOTE: To prevent engine damage, do not pour
water into a hot engine. Do not operate
engine without coolant.
With system properly drained:
1. Fill the cooling system with clean water and a
cooling system cleaner recommended for
aluminum engines. Follow the directions on the
container.
2 Reinstall and tighten the radiator cap.
3. Reinstall the upper blower housing assembly and
secure with the retaining straps.
4. Start and run the engine five minutes, or until it
reaches operating temperature.
5. Remove the upper blower housing and drain the
cooling system immediately, before contaminants
settle (refer to ‘‘Draining Cooling System’’).
6. Fill the cooling system (See Filling the Cooling
System).
7. Reinstall the upper blower housing and screen
assembly.
Filling Cooling System
NOTE: To prevent engine damage, do not use anti-
freeze mixture greater than 70% ethylene
glycol in the cooling system. Do not use anti-
freeze with stop-leak additive(s) or mix/add
other additives to the cooling system. Use
only ethylene glycol anti-freeze.
Cooling system capacity is approximately 1.4 liters
(1.47 qts.)
1. Unhook the retainer straps, and remove the upper
blower housing and screen assembly.
2. Check the condition of cooling system hoses,
clamps, and associated components. Replace as
required.
3. Mix 50% ethylene glycol with 50% distilled or
deionized water (See Coolant Recommendation).
For extremely cold temperature applications or
protection outside the limits listed in the Coolant
Recommendation Section, refer to the anti-freeze
manufacturer's instructions on the container.
4. Fill the cooling system through neck for radiator
cap with the coolant mix, allow coolant to drain
into the lower areas. Fill the overflow reservoir
midway between the ‘‘Min. Level’’ and ‘‘Max.
Level’’ marks, then install the radiator and
reservoir caps.
5. Install the upper blower housing and screen
assembly. Start engine, run for five minutes and
let cool.
6. Remove the blower housing and recheck coolant
level in reservoir. Coolant level should be between
the ‘‘Max. Level’’ and ‘‘Min. Level’’ marks. See
Figure 7-4. Add coolant if required.
7. Reinstall the upper blower housing and screen
assembly.