CONTROLS
HUSQVARNA
-21
Air Filter
The engine air filter consists of a cyclone filter and a
fine filter.
Air is drawn in through the screen (1) on the cyclone
filter and coarser pollutants collect in the container (2).
The fine filter, consisting of a foam rubber pre-filter and
a paper filter cartridge, is located under the cowling
(3). The cowling and the cyclone filter can be removed
by removing the wing nut (4).
See Replacing the Air Filter in the Maintenance section
for cleaning instructions.
Running the machine with a dirty air filter will cause
the engine to run on partial choke and show the same
symptoms as a closed choke described above. It can
also be difficult to start.
8011-126
4
3
2
1
8011-027
Spark Plug
The engine spark plug is hidden under the ignition
cable boot. When performing service, it is important
that the engine cannot start accidentally. For this
reason, always remove the ignition cable boot from the
spark plug. To avoid pulling the cable, the cable boot
is equipped with a special handle; see the illustration.
See
Technical Data
for replacement specifications.
Muffler
WARNING!
The engine and the exhaust system,
become very hot during operation.
Risk for burns if touched.
Allow engine and exhaust system to
cool at least two (2) minutes before
refueling
The engine muffler is equipped with a heat protective
cowling but still becomes hot when the engine is
running. Avoid touching the muffler when it is warm.
There is a risk for burns.
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