GB
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9. Maintenance
Always switch off the equipment and pull out the
spark boot plug before carrying out any mainte-
nance work.
9.1 Maintenance of the engine unit
9.1.1 Maintenance of the air fi lter
(Fig. 14a-14c)
Soiled air fi lters reduce the engine output by
supplying too little air to the carburetor. Regular
checks are therefore essential. The air fi lter (10)
should be checked after every 25 hours of use
and cleaned if necessary. If the air contains a lot
of dust, the air fi lter must be checked more fre-
quently.
1. Remove the air fi lter cover (Fig. 14a).
2. Remove the air fi lter (Fig. 14b/14c)
3. Clean the air fi lter by tapping it or blowing it
out.
4. Assemble in reverse order.
Warning: Never clean the air fi lter with petrol or
infl ammable solvents.
9.1.2 Maintenance of the spark plug
(Fig. 15a-15c)
Spark plug sparking gap = 0.6mm. Tighten the
spark plug with a torque of 12 to 15 Nm. Check
the spark plug for dirt and grime after 10 hours of
operation and if necessary clean it with a copper
wire brush. Thereafter service the spark plug after
every 50 hours of operation.
1. Remove the spark plug connector cover (20)
as shown in Fig. 15a.
2. Pull out the spark plug connector (16). (Fig.
15b)
3. Remove the spark plug (Fig. 15c) with the
supplied spark plug wrench (27).
4. Assemble in reverse order.
9.1.3 Carburetor settings
Warning! Settings on the carburetor may only be
made by authorized customer service personnel.
To carry out any work on the carburetor you must
fi rst remove the air fi lter cover as shown in Figu-
res 14a-14c.
Setting the throttle cable:
If the maximum speed of the equipment drops
over time and you have ruled out all the other
possible causes listed in section 12 „Troubleshoo-
ting“, it may be necessary to adjust the throttle
cable. First of all check whether the carburetor
opens fully when the throttle handle is pressed
right through. This is the case if the carburetor
slide (Fig. 16a) is completely opened when the
throttle is fully activated. Figure 16a shows the
correct setting. If the carburetor slide is not com-
pletely open, it must be adjusted.
The following steps are required to adjust the
throttle cable:
•
Undo the lock nut (Fig. 16b/Item C) a few
turns.
•
Undo the adjusting screw (Fig. 16a/Item D)
until the carburetor slide is completely open
when the throttle is fully activated, as shown
in Figure 16a.
•
Retighten the lock nut.
9.1.4 Setting the idling speed
Important! Set the idling speed when the equip-
ment is warm.
Only an authorized service center is allowed to
set the idling speed. The start-up speed of the
cutting tool must be at least 1.25 times the idling
speed.
9.2 Maintenance of the trimmer/scythe
9.2.1 Replacing the line spool/cutting line
1. Dismantle the line spool (13) as described in
section 5.2.4. Press the spool together (Fig.
17a) and remove one half of the housing (Fig.
17b).
2. Take the line spool out of the line spool
housing (Fig. 17c).
3. Remove any remaining cutting line.
4. Place the new cutting line in the center and
hang the loop which has formed into the re-
cess in the spool splitter (Fig. 17d)
5. Wind up the line counter-clockwise and under
tension. The spool splitter will separate the
two halves of the line (Fig. 17e)
6. Hook the last 15cm of the two ends of the
line onto the opposite lying line holders of the
spool plate (Fig. 17f)
7. Thread the two ends of the line through the
metal eyelets in the line spool housing (Fig.
17c).
8. Press the line spool into the line spool
housing.
9. Pull the two line ends sharply to release them
from the line holders.
10. Cut the excess line to a length of around
13cm. This will reduce the load on the engine
when starting and warming up.
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General
Weight and Dimensions
