120
MAINTENANCE
Every 1000 Hours
Cleaning the Engine Cooling
System
WARNING
Stop the engine and allow the machine
to cool down 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 valves.
Working on the machine under these
conditions could result in burns
or injuries due to the hot coolant
spurting out.
Never jump off the machine. Use the
steps and handrails when climbing
on and off the machine, and always
support your body at three points with
your hands and feet.
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, as the machine could move
suddenly. Never stand at the back of the
machine while the engine is running.
Do not open the radiator cap or drain
valves when the coolant is hot. Stop
the engine, let the engine and radiator
cool and loosen the radiator cap or
drain valve 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 water to at least
90°C before cleaning.
1. Open the engine hood.
2. Gradually loosen the radiator cap (3) to
release the internal pressure, then remove
the cap.
3. Place a pan for catching the spent coolant
under the drain valve (4), then loosen the
drain valve (4) and drain the coolant.
4. Tighten the drain valve (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 from 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 water
temperature to at least 90°C, then run
the engine for about 10 minutes with the
thermostat open.
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