VIII. MAINTENANCE
51
20. INSPECTION AND CLEANING OF AIR-INTAKE
OPENINGS
IMPORTANT:
•
Air- Intake openings clogged with dust
or dirt causes overheating of the en-
gine due to deteriorated cooling effi-
ciency of the radiator. The radiator and
radiator screen should be checked for
clogging everyday before operation.
• When mowing dead grass or operat-
ing under extremely dusty conditions,
check the air-intake openings several
times a day to avoid clogging.
a. The screens of the air-intake openings are located
under the steering wheel.
Dust them by using a piece of cloth or the like.
(1) Air-intake screens
21. CLEANING OF THE RADIATOR
2
1
(1) Radiator
(2) Radiator screen
IMPORTANT: • The radiator screen and radiator
clogged with dust or dirt causes over-
heating of the engine due to deterio-
rated cooling efficiency of the radia-
tor. The radiator and radiator screen
should be checked for clogging every-
day before operation.
• When mowing dead grass or operat-
ing under extremely dusty conditions,
check the radiator screen and radiator
several times a day to avoid clogging.
The radiator (1) is located behind the engine and the
radiator screen (2) is located behind the radiator.
a. Draw out the radiator screen upwards.
b. Dust off the radiator screen with a soft brush.
c. The clogged radiator fins should be cleaned by
applying compressed air or water from both sides
alternatively.
d. Re-install the radiator screen.
IMPORTANT:
•
Avoid using excessively compressed
air or water, which may deform the
cooling fan blades.
• Avoid applying water directly to the
wiring and electric apparatus.
• After washing the radiator using water
from a tap, let it dry by itself.
22. COOLANT REPLACEMENT
WARNING: Never attempt to remove the
radiator cap during or just after operation,
or pressurized vapor and hot water will
gush out, which may cause burns. So wait
until the engine cools down sufficiently.
(1) Drain plug
The drain plug of the engine coolant is located on the
bottom of the left side of the engine.