Every 1000 Hours
Cleaning the Engine Cooling
System
WARNING
Stop the engine and allow the
machine to cool before performing
maintenance.
• The engine, muffler, radiator and
many other parts of the machine
are hot directly after the engine is
stopped. Touching these parts will
cause burns.
• The engine coolant is also hot and
under high pressure. Be careful when
loosening caps and plugs. Working on
the machine under these conditions
could result in burns or injuries due
to the hot coolant spurting out.
If maintenance must be performed
with the engine running, always work
as a two-person team, with one person
sitting in the operator’s seat while the
other works on the machine.
• When performing maintenance, be
sure to keep your body and clothing
away from moving parts.
Standing at the back of the machine
while the engine is running is extremely
dangerous, because the machine could
move suddenly. Never stand at the
back of the machine while the engine
is running.
Do not remove the radiator cap or drain
plugs when the coolant is hot. Stop
the engine, let the engine and radiator
cool, and loosen the radiator cap or
drain plugs slowly.
When cleaning, if the temperature of the
coolant is low, the thermostat will be closed
and the coolant will not circulate in the
radiator. Heat the coolant to at least 90°C
(195°F) before cleaning.
1. Open the rear door and remove the under
cover (5).
2. Gradually loosen the radiator cap (3) to
release the internal pressure, then remove
the cap.
3. Place a pan to catch the waste coolant
under the drain plug (4), then loosen the
drain plug (4) and drain the coolant.
4. Tighten the drain plug (4).
5. Add tap water through the radiator’s
coolant supply port up to the top of the
port. Take your time doing this, adding the
water slowly to avoid any air entering the
radiator.
6. Close the radiator cap (3).
7. Start the engine and run it at a speed
slightly above low idling. Raise the coolant
temperature to at least 90°C (195°F), then
run the engine for about 10 minutes with
the thermostat open.
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