Husqvarna HH 389MPC Operator's Manual page 11

To replace the engine oil
If the engine is cold, start the engine for 1–2 minutes
before you drain the engine oil. This makes the engine
oil warm and easier to drain.
WARNING: Engine oil is very hot directly after the
engine stops. Let the engine become cool before
you drain the engine oil. If you spill engine oil on
your skin, clean with soap and water.
1. Put a container below the drain plug for the engine oil.
2. Remove the oil tank cap and dipstick (A), the oil drain
plug (B) and the washer (C).
C
B
3. Let the oil run out into the container.
4. Install the washer and the oil drain plug. Tighten the oil
drain plug.
5. Fill to the edge of the hole with new engine oil. Refer to
or the engine manual for the correct type of oil.
6. Tighten the oil tank cap.
7. Do a check of the engine oil level.
To clean or replace the air filter
WARNING: Use approved respiratory protection
when you clean or replace the air filter. Discard
used air filters correctly. The dust in the air filter is
dangerous to your health.
WARNING: Do not clean the air filter with
compressed air. This causes damage to the air
filter and the risk increases that you breathe the
dangerous dust.
1. Turn the knob on the air filter cover and remove the air
filter cover (A).
1537 - 003 - 18.11.2022
2. Remove the paper filter element (B) and the foam filter
element (C).
A
Note: Some models only have a foam filter element
and not a paper filter element.
3. Clean the air filter housing with a brush.
4. Examine the air filter elements for damage.
5. Tap the paper filter element against a hard surface or
use a vacuum cleaner to remove the particles.
6. Clean the foam filter element with a solution of soap
and water.
7. Flush the foam filter element in clean water.
8. Compress the foam filter element to remove the water
and let the foam filter element dry fully.
9. Lubricate the foam filter element with engine oil.
10. Push a clean cloth against the foam filter element to
remove unwanted oil.
11. Install the air filter in the opposite sequence. Make
sure that the gasket (D) is in the correct position below
the air filter.
To clean the sediment cup
1. Move the fuel valve to the OFF position (A).
CAUTION: Always replace a damaged air
filter, or the dust will go into the engine and
cause engine damage.
CAUTION: Do not let the nozzle of the
vacuum cleaner touch the surface of the paper
filter element. Keep a small distance. The
sensitive surface of the paper filter element
becomes damaged if objects touch it.
A
B
C
D
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