Husqvarna PF 21 用户手册

English

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Check regularly that the fuel pump’s air filter is free from dirt.

The filter can when necessary be cleaned with a brush.

•

Remove the screws and open the pump, no hoses need 
be removed.

•

Replace the pump on the console.

Check that the transmission’s air intake in not blocked.

Remove the transmission cover and clean any grass cuttings 
from the transmission’s cooling fins if necessary.

Cooling is impaired if the air intakes are blocked or the 
transmission housing is dirty, this can result in damage to the 
transmission.

If the engine seems to lack power or does not run smoothly 
this may be because the air filter is clogged. It is therefore 
important to replace the air filter at regular intervals (see 
Maintenance/Maintenance Schedule for the correct service 
interval).

Replace the air filter as follows:

1

Open the engine cover.

2

Loosen the two fasteners holding the filter cover and 
remove it.

3

Remove the filter cartridge from the filter housing.

4

 Clean the filter by knocking the filter carefully against a 
hard surface and blowing with compressed air from inside. 
Never brush the dirt away. Replace the air filter if it is very 
dirty.

PF 21 and PF 21 AWD have an additional filter located 
behind the filter cartridge. Clean the filter by knocking it 
with care against a hard surface. Do not use compressed 
air for this filter.

5

Replace the filter cartridge. Make sure the filter cartridge 
is correctly fitted over the air intake in the filter housing.

6

Replace the air filter cover, ensure that the particle 
collector is facing downwards.

Never run the engine without the air filter fitted.

The filters must not be oiled. They must be fitted dry.