Operation Manual

133MS 241 C
All versions
: Push the holder (1) of the
switchgear over the studs so that
the tab rests against the
pin (arrow)
– Install the filter base with the
attached wiring harness, b 8.4
– Install the choke rod, b 11.4
– Install air filter, b 13.1
– Check correct functioning
– Set throttle trigger to full
throttle; the throttle shutter on the
carburetor must be open all the
way
– Reassemble remaining parts in
reverse order
13.5.1 Leakage test
The tank vent must also be checked
and replaced if problems develop
with the carburetor or fuel supply,
b 13.10
The carburetor can be tested for
leaks with the pump
0000 850 1300.
– Remove filter base with attached
wiring harness and lay it aside,
b 8.4
– Remove the carburetor, b 13.5
2410RA260 TG
1
: Push the fuel line (1)
1110 141 8600 onto the double
connector (2) 0000 855 9200
: Push the fuel line with double
connector onto the fuel
port (arrow)
– Push the delivery hose of the
pump 0000 850 1300 onto the
double connector
: Push ring (1) to the right and
pump air into the carburetor until
the pressure gauge (2) shows a
pressure of approx. 0.8
bar (80 kPa)
If this pressure remains constant,
the carburetor is airtight. However, if
the pressure drops, this may have
the following causes:
1. Metering diaphragm or gasket is
damaged, replace if necessary,
b 13.6.1
2410RA506 TG
1
2
2
1
2410RA507 TG
2. The inlet valve is not sealing
(foreign objects in the valve
seat,
sealing cone of the inlet needle
is damaged or
inlet control lever is sticking),
remove to clean,
b 13.1
3. Pump diaphragm or
gasket damaged,
replace if necessary, b 13.6.3
– Check tank vent if necessary,
b 13.10.1
– After completing the test, slide
ring (1) to the left and vent the
system, then disconnect fuel line
from elbow connector of
carburetor
– Install the carburetor, b 13.5
– Install the filter base with the
attached wiring harness, b 8.4
– Reassemble remaining parts in
reverse order
13.6 Repairing the carburetor
All versions are controlled by the
M-Tronic system, thus no adjusting
screws are required or present on
the carburetor. Solenoid and special
bolt for idle stop may not be
modified or removed; if they are
damaged, the carburetor must be
replaced.