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4. Install the oil drain tube (A) on the engine oil drain
valve (B).
A
B
5. Put a container below the engine to catch the engine
oil.
6. Turn the oil drain valve counterclockwise to open the
oil drain valve. Use a 10 mm wrench.
7. When all engine oil is drained, turn the oil drain valve
clockwise to close it. Use a 10 mm wrench.
8. Use the 10 mm wrench to carefully torque the oil
drain valve closed. Do not tighten too tightly.
CAUTION: Do not apply too much
torque when you tighten the oil drain
valve.
9. Remove the oil drain tube from the oil drain valve.
10. Fill the engine with new engine oil through the
dipstick tube. Fill slowly. Do not fill the engine with
too much engine oil. For the approximate capacity,
refer to
Technical data on page 39
.
11. Do a check of the engine oil level. Refer to
To do a
check of the engine oil level on page 29
.
12. Install the lower cover. Refer to
To install the lower
cover on page 30
.
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
replace the engine oil on page 30
.
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
replace the engine oil on page 30
.
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 do a check of the muffler
• Examine the muffler regularly to make sure that it is
attached correctly and not damaged.
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.
Replace the in-line filter if it becomes clogged and stops
the flow of fuel to the carburetor.
2231 - 003 - 22.09.2023
31
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