Cushman TURF-TRUCKSTER, Service & Repair Manual, Page: 39 / 263

RADIATOR AND COOLING SYSTEM
The engine is equipped with a cooling radiator and an
electric cooling fan.
CHANGING OR REPLENISHING COOLANT
INSPECTING THE COOLING SYSTEM
Check the radiator and coolant hoses for leaks and
faulty connections, repair as necessary (see Figures
3E-4 and 3E-5).
Inspect the engine belts for fraying or cracking and
check the engine for loose hardware.
Check the coolant reservoir (there should be approxi-
mately 4 inches (102 mm) of coolant in the reservoir).
Remove the radiator cap and check the coolant level.
The coolant should be at, or within a 1/4 inch (6 mm)
from the bottom of the filler port (if coolant is needed,
add a 50/50 anti-freeze/water mixture following the
procedures stated below).
ADDING ANTI-FREEZE TO THE
COOLING SYSTEM
The cooling system should be drained and refilled
every 400 hours or nine (9) months.
Make a 50/50 mixture of anti-freeze and water in a
separate container before adding coolant to the radia-
tor. Never add straight anti-freeze to the radiator, the
mixture must never be more than 50% anti-freeze.
Cooling system capacity for the diesel engine is 5.0
qts. (4.7 L).
Unless the radiator is very low, always add coolant to
the overflow reservoir, not to the radiator.
With the park brake applied and the gear selector in
neutral start the engine and let idle.
Remove the overflow reservoir cap, add the anti-
freeze mixture to the overflow bottle until the coolant
level reaches approximately 4 inches (102 mm) in the
bottle, replace reservoir cap.
If the radiator level is very low, add the anti-freeze
mixture directly to the radiator until it reaches approxi-
mately 1/4 inch (6 mm) from the bottom of the filler
neck, then start the engine and add mixture to the
overflow reservoir until proper level is reached.
CHANGING COOLANT
(See Figures 3E-4 and 3E-5)
1. Remove the radiator cap when the engine is cool.
2. Remove drain pug and drain coolant.
3. Remove and drain overflow bottle.
4. Reinstall plug.
5. Reinstall overflow tank.
6. Fill the cooling system with 5.0 qts. (4.7 L) of
coolant (includes engine, radiator and overflow
bottle) and run engine for 2 or 3 minutes at idle.
This forces out air which still may be trapped with-
in the cooling system. Stop engine and add
coolant as necessary until coolant level reaches
the filler throat of radiator. Reinstall radiator cap.
7. Add coolant to reservoir tank so that the level is at
the full mark.
CLEANING RADIATOR CORE
Keep the radiator intake screen (see Figures 3E-4
and 3E-5), radiator fins and surrounding engine areas
free of debris.
If the radiator fins or intake screen become dirty, air
cannot circulate well enough to cool the engine suffi-
ciently, therefore you risk the chance of the engine
overheating.
Clean the radiator fins with compressed air. If water is
used to clean the radiator, use compressed air to
blow all the water from the fins. Water left between
the fins will collect dirt and plug the radiator, this will
reduce the amount of air flow to properly cool the
engine.
ENGINE
SECTION 3E. GASOLINE ENGINES
3E-4
!
WARNING
The cooling fan is thermostatically controlled
and may start at any time. Even with the ignition
key in the off position, do not attempt service
without first disconnecting the negative (–) bat-
tery cable or without first removing the fan fuse.
The cooling system is under pressure, if a leak
is present, be careful when raising the seat or
when opening the engine cover. Hot coolant can
be sprayed causing personal injury.
!
WARNING
Always make sure the engine is stopped and
cool before removing the radiator cap. To pre-
vent scalding by hot water, never remove cap
while radiator is hot.