Husqvarna IZ 21 Manuel D’Utilisation

English-

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If the engine seems weak or runs unevenly, 
the air filter may be clogged. If run with a dirty 
air filter, the spark plugs can become fouled, 
distupting operation.
For this reason, it is important to replace the air 
filter regularly (see the heading Maintenance 
Schedule for the proper service interval).

Cleaning/replacing the air filter is carried out 
as follows:

1.

Remove the plastic fastener on the top of 
the air filter cowling and remove the air 
filter cowling.

2.

Remove the foam rubber pre-filter and 
clean using a mild detergent.

Squeeze it dry with a clean cloth.

3.

Remove the wing nuts for the air filter 
and remove the paper filter. Tap the 
paper filter against a fixed surface to 
remove dust. If the paper filter is still 
dirty, it must be replaced. 

4.

Refit the air filter as follows:

Check that the seal on the bottom of the 
paper filter is whole. 

Mount the paper filter in the air filter 
housing and tighten the wing nuts.

5.

Refit the pre-filter on the paper filter.

6.

Replace the cowling over the air filter 
housing. Do not over tighten the plastic 
fastener.

8011-768

8011-557

8011-558

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