21
GB
8. Cleaning, maintenance and ordering
of spare parts
Always switch off the equipment and pull out the
spark boot plug before carrying out any maintenance
work.
8.1 Replacing the line spool / cutting line
1. Unscrew the retainer screw (Fig. 6a/Item G) in a
counter-clockwise direction and remove (Fig. 6b).
If you fail to do this by hand, use the key (Fig.
2/Item 10).
2. Remove the spool (Fig. 6c/Item H) and the spring
(Fig. 6c/Item I) from the spindle (Fig. 6c/Item J).
The following steps only have to be carried out if only
the line and not the entire spindle requires replacing:
n Remove the remaining cutting line from the spool.
n Hold the two halves of a new cutting line together
in the middle and place the loop in one of the
slots on the spool divider (Fig. 6d).
n Wind the line with tension in a counter-clockwise
direction as shown in the illustration (Fig. 6e), with
the two halves being separated by the spool
divider. Wind up all of the line down to the last
15cm of each end.
3. Fasten each of the ends of the line in a slot (Fig.
6f/Item L) on the opposite side of the spool.
4. Fit the springs on the inside of the spool and
thread each of the ends of the line through one of
the eyelets in the spool holder (Fig. 6c/Item K).
5. Insert the spool in the spool holder. Make sure
that the spring slides over the spindle and does
not get stuck.
6. Press the spool into the spool holder with your
hand and use your other hand to fasten the
retainer screw tightly (Fig. 6g).
7. Give each end of the line a strong tug to pull the
line out of the slots.
8. Cut off all excess line to reduce it to approx. 13
cm. This will reduce the load on the engine when
starting up and warming up.
8.2 Servicing the air filter
Soiled air filters reduce the engine output by supply
too little air to the carburetor. Regular checks are
therefore essential. The air filter (22) should be
checked after every 25 hours of use and cleaned if
necessary. If the air contains a lot of dust, the air filter
should be checked more frequently.
1. Remove the air filter cover (Fig. 10a).
2. Remove the air filter (Fig. 10b/10c)
3. Clean the air filter by tapping it or blowing it.
4. Assemble in reverse order.
Important: Never clean the air filter with petrol or
inflammable solvents.
8.3 Maintenance of the spark plug
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. Pull out the spark plug boot.
2. Remove the spark plug (Fig. 11b) with the
supplied spark plug wrench (19).
3. Assemble in reverse order.
8.4 Grinding the safety hood blade
The safety hood blade (Fig. 7a/Item R) can become
blunt over time. When you notice this, undo the screw
holding the safety hood blade to the safety hood.
Clamp the blade in a vise. Sharpen the blade with a
flat file and make sure that the angle of the cutting
edge is not altered in the process. File in one
direction only.
8.5 Carburetor settings
Important. Settings on the carburetor may only be
made by authorized customer service personnel.
The air filter cover must be removed before any work
on the carburetor, as shown in Figures 10a and 10b.
Setting the throttle cable
If the maximum speed of the equipment falls over
time and you have ruled out all the other causes listed
in section 11 Troubleshooting, it may be necessary to
adjust the throttle cable.
First of all check whether the carburetor opens fully
when the throttle handle is pressed fully. This is the
case if the lever M impacts against the carburetor
housing when the throttle is fully open (Fig. 12a).
Figure 12a shows the correct setting. If the lever M
does not impact against the carburetor housing, it
must be adjusted.
The following work is required to adjust the throttle
cable:
n Undo the lock nut (Fig. 12b/Item N) a few turns.
n Undo the adjusting screw (Fig. 12b/Item O) until
the lever M impacts fully against the housing
when the throttle is fully activated, as shown in
Figure 12a.
n Retighten the lock nut.
