103
FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M
11.5
Carburetor adjustment
with M-Tronic
The carburetor is adjusted by the M-
Tronic, thus no manual adjustments
to the carburetor are necessary or
possible.
Position of the screw (1) must not
be changed
– changing the factory default
setting leads to impaired engine
performance.
Solenoid valve (2) is pre-set at the
factory and must not be
disassembled.
– In case of malfunctions, check M-
11.6
Carburetor adjustment
without M-Tronic
The new carburetors have been
adjusted for optimum performance
and fuel efficiency in all operating
states at the factory.
The high speed screw
H
and low
speed screw
L
can only be adjusted
with screwdriver 5910 890 2307.
It is no longer necessary or possible
for the user to adjust these adjusting
screws.
5904RA383 TG
1
2
The idle speed screw
LA
remains
unchanged and can still be set by
the user to adjust the idle speed.
11.6.1 Basic setting
Only necessary if the high speed
screw
H
or low speed screw
L
has
to be replaced or for cleaning and
setting the carburetor.
Basic setting and fine adjustment
are required after the adjusting
screws have been removed and
installed.
Before the start of the fine
adjustment, the adjusting screws
must be pre-set; this can not be
done if the engine is running or if the
carburetor has been removed from
the machine.
With the low speed and high speed
screws in their seats, turn them
counterclockwise.
:
Set adjusting screws using
screwdriver (3) 5910 890 2307
:
Turn high speed adjusting
screw
H
(1)
1 3/4 turns
Turn low speed
screw
L
(2)
1 1/4 turns
5904RA384 TG
3
1 2
Now the basic setting of the high
speed screw
H
and the low speed
screw
L
has been established.
– Continue with fine adjustment
Fine adjustment
Carburetor and air filter must be
installed.
– Attach deflector and cutting
attachment (mowing head), see
Instruction Manual
– Cutting attachment must rotate
freely, clean if necessary
– Examine the spark arresting
screen (if installed); clean or
replace it if necessary,
– Examine air filter, replace if
necessary
– a dirty air filter may not be
cleaned,
– Set adjusting screws using
screwdriver 5910 890 2307
Basic setting of the
high speed screw
H
and low speed
screw
L
must have been
established.
– Let the engine warm up