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9.5 Air Filter Maintenance
Contaminated air filters cause a
reduction in engine performance and increase fuel
consumption with more pollutants in the exhaust
gas. Engines are less likely to start readily with a
contaminated air filter.
As a basic principle therefore, the air filter should
be cleaned as follows before starting work, and
intermittently in very dusty conditions:
Fig. 10
Before opening the air filter, close the choke
prevent dirt entering the carburettor.
• Push tab (a) in, only slightly open air filter lid
(11) and remove by rotating gently back and
forth
• Remove foam filter (c) from the lid and clean
the area around the filter.
• Thoroughly clean air filter casing (d) and air
filter cover (11) on the inside, using a
paintbrush or by carefully blowing on them.
• Clean filter insert (c) by shaking it out or
carefully blowing on it.
If the filter insert is damaged or so contaminated
that it is impossible to clean, replace it with the
original spare part (part no. 20 48 406).
• Insert the new or cleaned foam filter into the air
filter lid.
• Position the air filter cover with both tabs (b)
[inside, opposite tab (a)] in the corresponding
two pockets (b') of the filter casing.
• Press air filter cover against the filter casing
until tab (a) clicks audibly into place.
Operating and maintenance instructions
9.6 Replacing the fuel filter
We recommend having the fuel filter (34) changed
annually by a specialised service centre.
Fig. 11
(schematic diagram)
A trained mechanic can carefully remove the fuel
filter via a wire loop through the fuel tank filler.
Ensure that the thicker part of the fuel hose on the
tank wall is not drawn into the fuel tank.
9.7 Shutdown and storage
to
Clean the power tool after use.
• Never use aggressive cleaning solutions or
those containing solvents to clean any part of the
engine. Never hose down the engine. For best
results, simply wipe down the entire engine with
a dry or slightly damp cloth.
• For the changeover tool, observe the information
in the operating instructions of the changeover
tool.
Store the device in a dry, safe location inside a
building (garage, basement, ...). There must not be
any open fires or similar nearby. Ensure that the
device cannot be used by unauthorised persons,
especially children.
If not in use for more than four weeks, drain the
fuel tank in a well ventilated location before storing.
Start the engine with an empty fuel tank and drain
the carburettor until the engine stops. Oil residues
from the fuel mixture could otherwise clog the
carburettor jets and make it difficult to start the
device later.
ENGLISH 15
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