Note
The device should be thoroughly cleaned after each use.
Only carry out cleaning and maintenance work to the extent
specified in this operating manual. Further work must be car-
ried out by qualified specialists.
Maintenance work must be carried out regularly (see chapter
"Maintenance intervals").
13.1 Cleaning the engine unit
m WARNING
Danger of burning!
Do not touch hot silencers, cylinders or cooling fins.
• Keep protective devices, air vents and the engine housing
as free of dust and dirt as possible. Blow it out with low-
pressure compressed air.
• Clean the device at regular intervals using a damp cloth and
a little detergent. Make sure that no water can penetrate the
device interior.
13.2 Cleaning the air filter
Fouled air filters diminish the engine output due to reduced air
supply to the carburettor.
Regular inspection is therefore essential. The air filter (33)
should be checked regularly and cleaned as required.
The air filter (33) must be checked more frequently in the case
of very dusty air.
• Loosen the catch for the air filter cover (5) by turning it anti-
clockwise.
• Remove the air filter cover (3).
• Remove the air filter (33).
• Clean the air filter (33) by knocking out or blowing out (with
compressed air).
The re-assembly takes place in reverse order.
m ATTENTION
Never clean the air filter (33) with petrol or flammable solvents.
13.3 Cleaning the chain drive
m WARNING
Danger of injury!
Always wear protective gloves when touching the saw chain
(17). Danger of injury due to the sharp cutting teeth!
Note
Clean the chain drive after each use.
• Set the chainsaw down on a level and stable surface.
• Pull the front hand guard (1) back as far as it will go to release
the chain brake (see fig. D).
• Turn the chain tensioning screw (21) anti-clockwise using the
slotted screwdriver (31) to reduce the tension.
• Remove the two fixing nuts (20) with the spark plug wrench
(31).
• Remove the chain cover (22).
• Carefully remove the saw chain (17) from the guide rail (16)
and the chain wheel (26).
• Remove the guide rail (16). Clean them with a brush.
14
GB/IE/NI/CY/MT
• Now thoroughly clean the entire chain drive area and the
chain cover (22) with a brush or by blowing it out (with com-
pressed air).
The re-assembly takes place in reverse order.
13.4 Maintaining the spark plug
• Remove the air filter (33) as described in 13.2 "Cleaning the
air filter".
• Remove the spark plug connector (34) by turning it to the left
and right and pulling it at the same time. Hold and pull the
spark plug connector (34) by the connector only. Never pull
on the cable!
• Loosen the spark plug with the enclosed spark plug wrench
(31).
• The re-assembly takes place in reverse order.
Electrode gap = 0.6 mm (distance between the electrodes, be-
tween which the ignition spark is generated). Check the spark
plug for dirt for the first time after 10 operating hours and clean
it with a copper wire brush if necessary.
Then service the spark plug every 50 operating hours.
13.5 Maintaining the chain lubrication
• See chapter "Checking and adjusting chain lubrication".
13.6 Maintaining the carburettor settings
• If the saw chain (17) moves at idle or the engine stops by itself
when the throttle is released, a carburettor adjustment must
be made.
Note
Have carburettor adjustments (e.g. idle speed) carried out only
by qualified specialists to avoid engine damage.
13.7 Maintaining the guide rail
• Remove any burrs on the edge of the guide bar using a metal
file.
• Clean the groove of the guide rail (16) using a brush or com-
pressed air. Replace the guide rail (16) as soon as the groove
is worn.
• Turn the guide rail (16) after each use to ensure even wear.
• Check the sprocket at the tip of the guide rail (16) for smooth
running. If necessary, lubricate it with a bearing oil.
13.8 Mounting the guide rail and tensioning the saw chain
m ATTENTION
Always carry out assembly with the engine switched off.
m WARNING
Danger of injury!
Always wear protective gloves when touching the saw chain
(17). Danger of injury due to the sharp cutting teeth!
Note
A new saw chain (17) stretches and needs to be re-tensioned
more often. Check and adjust the chain tension regularly after
each cut.
Depending on wear, the guide rail (16) can be turned.
• Set the chainsaw down on a level and stable surface.