Husqvarna PG 400 Petrol Operator's Manual page 15

1. Remove the wing nut from the air filter cover, and
remove the air filter cover.
2. Remove the air filter.
3. Remove the foam filter from the paper filter.
4. Examine the foam filter and the paper filter.
5. Replace damaged filters.
6. Replace the air filter as scheduled. Refer to
Maintenance schedule on page 13 .
7. Clean the foam filter and the paper filter if they are
To clean the air filter on page 15 .
dirty. Refer to
8. Replace the air filter in the opposite sequence.
883 - 002 - 10.09.2020
To clean 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. Remove the air filter, refer to
on page 14 .
2. Clean the air filter housing with a brush.
3. Tap the air filter against a hard surface or use a
vacuum cleaner to remove the particles.
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.
4. Examine the air filter for damage.
5. Discard the air filter if it is damaged.
CAUTION: Always replace a damaged
air filter, or the dust will go into the
engine and cause engine damage.
6. Clean the foam filter with soap and water.
7. Flush the foam filter in clean water.
8. Squeeze the water from the foam filter and let it dry.
9. Lubricate the foam filter with engine oil.
10. Press a clean cloth against the filter to remove
unwanted oil.
Note: Smoke will come out from the engine if there is
too much oil in the foam filter when the engine starts.
11. Put the air filter cover back. Refer to
air filter on page 14 .
To do a check of the brush strip
• Make sure that the brush strip is not damaged and
that it seals tightly against the floor.
To examine the spark plug
WARNING: Let the spark plug become cool
before you replace it.
To examine the air filter
To examine the
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