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CAUTION: Be careful not to let dirt
enter the engine when you change the
oil.
5. Install the drain tube (E) onto the oil drain valve.
E
G
F
6. Turn the valve counterclockwise with a 10 mm
wrench to open the oil drain valve (F).
7. Turn the drain valve clockwise to close it (G) when
the oil is drained.
Note: Use a 10 mm wrench to apply a small
quantity of torque to keep the drain valve closed. Do
not tighten too firmly.
8. Remove the drain tube (E) and keep it.
9. Fill the engine with new oil through the oil fill dipstick
tube.
Note:
Put oil into the engine slowly. Do not fill
the engine with too much oil. For the approximate
capacity, see .
10. Use the gauge on the oil fill dipstick to do a check of
the oil level.
a) Put the dipstick into the tube and let the oil fill
cap touch the top of the tube.
b) Do not tighten the cap onto the tube when you do
an oil level check.
c) Make sure the oil is at the “FULL” line on the
dipstick.
d) Tighten the cap onto the tube tightly when you
complete the check.
To replace the engine oil filter
WARNING:
Use protective gloves. If
you spill engine oil on your body, clean with
soap and water.
1. Drain the engine oil from the oil tank. Refer to
To
change the engine oil on page 27
.
2. Turn the engine oil filter counterclockwise to remove
it.
3. Lightly lubricate the rubber seal on the new oil filter
with new engine oil.
4. To install the new oil filter, turn it clockwise until
the rubber seal fits correctly, then tighten a half turn
more.
5. Fill the oil tank with new engine oil. Refer to
To do a
check of the engine oil level on page 27
.
6. Start the engine and let it operate at idle speed for 3
minutes.
7. Stop the engine and make sure that there is no oil
leakage from the oil filter.
Note: If the there is oil leakage, tighten the oil filter
again.
8. Fill the oil tank with more engine oil to replace the
engine oil that the new oil filter has absorbed.
To clean the air filter
The engine will not run satisfactorily with a dirty air filter.
Clean the air filter more frequently in dusty conditions.
To clean the air screen
Note: The air screen must be kept free of dirt to
prevent engine damage caused by overheating.
• Clean the air screen with a wire brush or
compressed air to remove dirt.
To do maintenance on the engine cooling
system
Note:
A blocked grass screen, dirty or full cooling fins,
and/or removed blower housing, and so on, can make
the engine too hot and cause engine damage.
• Make sure that the grass screen, the cooling fins,
and other external surfaces of the engine are clean
at all times.
• After each interval of 100 hours of operation (more
often in extremely dusty and dirty conditions),
remove the blower housing and other parts of the
engine cooling system. Clean the cooling fins and
external surfaces as necessary. Make sure that the
engine cooling system parts are installed correctly.
To replace the spark plugs
The spark plug type and clearance (gap setting) are
shown in .
• Replace the spark plugs at the start of each cutting
season or after each interval of 100 hours of
operation.
To replace the in-line fuel filter
Note:
Replace the in-line fuel filter every year at
minimum.
28 2235 - 002 - 22.09.2023
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