Operating and maintenance instructions
ENGLISH
13
Remove the assembled filter element (20) from the
filter retainer (21).
Please note: Never separate
the filter element
Please note: Never separate the filter element. Clean
the filter more often in extreme dust conditions. For
daily cleaning jobs simply tap the filters against a
hard object or use compressed air. Damaged air
filters should be replaced immediately. Warranty
does not apply to engine damage caused by the lack
of or improper maintenance.
Insert the new or cleaned filter element in
accordance with Fig. 16 into the filter retainer. Then
close the filter cover and secure it by clicking it into
position.
Never insert moist or wet filter elements!
7.5 Carburettor adjustment
The carburettor has been adjusted optimally at the
factory. Subject to the operational altitude
(mountains or low lying areas), the carburettor may
require readjustment.
If the idle speed is correctly adjusted, the engine
should run on idle, without the cutter (even when
the throttle safety catch is pressed) moving. Slight
adjustments of the idle throttle into the average
idle speed given in the specification can be made via
the idle stop screw "T" by following the instructions
below (the use of a tachometer is recommended):
The air filter must be clean to ensure correct idle
speed adjustment. Let the engine run until it is
warm, before making any adjustments.
x
If the engine idles too fast (in particular if the
power tool has already operated at idle speed),
turn the idle speed stop screw "T" anti-
clockwise.
x
If the engine idles too slowly (i.e. the engine
always dies in idle), turn the idle speed stop
screw "T" clockwise a little, until the engine
runs smoothly.
Under no circumstances must the cutter be
driven at idle speed.
Only qualified mechanics must adjust the
regulating screws for idle mixture "L" and full
load mixture "H".
If the idling speed cannot be set correctly with the
idling end-stop screw "T", request an authorised
service centre to tune the carburettor.
The following instructions are for authorised
service shops
D-CUT carburettors:
Use the D-CUT carburettor key to adjust the idle
mixture screw "L" and the full load mixture screw
"H". Check with our customer service team
regarding the basic setting.
Carburettors with limiter caps:
The regulating screws for idle mixture and full load
mixture can only be adjusted in a limited range.
The carburettor is tuned for optimum engine
performance. Use a rev counter to tune the
carburettor correctly!
Do not adjust the engine to a higher speed.
Excessive engine speed can lead to major engine
damage!
Fig. 17
Fig. 16
