EINHELL GC-BC 31-4 S Instructions D'origine page 25

recoil.
9. Maintenance
Always switch o the equipment and pull out the
spark boot plug before carrying out any mainte-
nance work.
9.1 Replacing the line spool/cutting line
1. Dismantle the line spool (13) as described in
section 5.1.6. Press the spool together (Fig.
12a) and remove one half of the housing (Fig.
12b).
2. Take the line spool out of the line spool
housing (Fig. 12c).
3. Remove any remaining cutting line.
4. Place the new cutting line in the center and
attach the resulting loop to the recess in the
spool splitter (Fig. 12d).
5. Wind the line on to the spool counter-clockwi-
se with tension. The spool splitter will separa-
te the two halves of the nylon line (Fig. 12e).
6. Hook the last 15 cm of the two ends of the
line to the line holders opposite the line spool
(Fig. 12f).
7. Thread the two ends of the line through the
metal eyelets in the line spool housing (Fig.
12b).
8. Press the line spool into the line spool
housing (Fig 12a).
9. Cut the excess line to a length of around 13
cm. This will reduce the load on the engine
when starting up and warming up.
10. Fit the line spool again. See section 5.1.6. If
you are replacing the complete line spool,
ignore points 3-6.
9.2 Grinding the safety hood blade
The safety hood blade can become blunt over
time. When you notice this, undo the screw hol-
ding the safety hood blade on the safety hood.
Clamp the blade in a vise. Sharpen the blade with
a ß at Þ le and make sure that the angle of the cut-
ting edge is not altered in the process. File in one
direction only.
Anl_GC_BC_31_4_S_SPK7.indb 25
GB
9.3 Maintenance of the air Þ lter
Soiled air Þ lters reduce the engine output by sup-
ply too little air to the carburetor. Regular checks
are therefore essential. The air Þ lter should be
checked after every 25 hours of use and cleaned
if necessary. If the air contains a lot of dust, the air
Þ lter should be checked more frequently.
1. Remove the air Þ lter cover (Fig. 10a).
2. Remove the Þ lter element (Fig. 10b/10c).
3. Clean the Þ lter element by tapping it or
blowing it.
4. Assemble in reverse order.
Important: Never clean the air Þ lter with petrol or
inß ammable solvents.
9.4 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 connector (20) (Fig.
11a).
2. Remove the spark plug (Abb. 11b) with the
supplied spark plug wrench (27).
3. Assemble in reverse order.
9.5 Carburetor settings
Important. Settings on the carburetor may only be
made by authorized customer service personnel.
The air Þ lter cover must be removed before any
work on the carburetor, as shown in Figures 10a-
10c.
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. 13a) is completely opened when the
throttle is fully activated. Figure 13a 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. 13b/Item C) a few
turns.
•
Undo the adjusting screw (Fig. 13b/Item D)
until the carburetor slide is completely open
when the throttle is fully activated, as shown
in Figure 13a.
•
Retighten the lock nut.
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