Air Filter; Spark Plug; Fuel System - Husqvarna 3122 K Bedienungsanweisung

Air filter
NOTICE! Poor maintenance of the air filter will cause
carbon build-up on the spark plug and abnormal wear to
engine parts. A damaged air filter must always be replaced.
The air filter must not be cleaned or blown clean with
compressed air. This will damage the filter.
The air filter system consists of an oiled foam plastic filter (2)
and a paper filter (4).
The foam plastic filter is easily accessible under the filter
cover (1). This filter should be checked weekly and replaced
if necessary.
• Remove the foam plastic filter. Wash the filter well in tepid
soapy water. After cleaning, rinse the filter well in clean
water. Squeeze out and allow the filter to dry.
• Oil the foam plastic filter well. It is extremely important that
the entire filter is saturated with oil.
The paper filter is accessible under cover (3). This filter must
be replaced/cleaned when the engine's power drops.
• The filter is cleaned by shaking. Note that the filter must
not be washed.
An air filter that has been in use for a long time cannot be
cleaned completely. The filter must therefore be replaced with
a new one at regular intervals. A damaged air filter must
always be replaced.
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MAINTENANCE
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4

Spark plug

• If the machine is low on power, difficult to start or runs
poorly at idle speed: always check the spark plug first
before taking other steps.
• Ensure that the spark plug cap and ignition lead are
undamaged to avoid the risk of electric shock.
• If the spark plug is dirty, clean it and at the same time
check that the electrode gap is 0.5 mm. Replace if
necessary.
NOTICE! Always use the recommended spark plug type!
Use of the wrong spark plug can damage the piston/
cylinder.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difficulties.
• An incorrect fuel mixture (too much or incorrect type of
oil).
• A dirty air filter.

Fuel system

General
• Check that the fuel cap and its seal are not damaged.
• Check the fuel hose. Replace when damaged.
Fuel filter
• The fuel filter sits inside the fuel tank.
• The fuel tank must be protected from contamination when
filling. This reduces the risk of operating disturbances
caused by blockage of the fuel filter located inside the
tank.
• The filter cannot be cleaned but must be replaced with a
new filter when it is clogged. The filter should be
changed at least once per year.
Drive gear, clutch
• Check the clutch centre, drive gear and clutch spring for
wear.