59MS 210, MS 230, MS 250
Troubleshooting chart – b 4.5.
If problems occur on the carburetor
or the fuel supply system, always
check and clean the tank vent –
b 11.3.
The carburetor can be tested for
leaks with the carburetor and
crankcase tester 1106 850 2905.
– Remove the carburetor box cover
– b 11.1.
: Pull fuel hose (arrow) off the
carburetor's elbow connector.
: Push the fuel line (1)
1110 141 8600 onto the
nipple (2) 0000 855 9200.
VA
143RA172
2 1
: Push fuel line with nipple onto
carburetor elbow connector
(arrow).
VA
208RA020
: Connect the tester's pressure
hose to the nipple.
VA
208RA021
: Close the vent screw (1) on the
rubber bulb (2) and pump air into
the carburetor until the pressure
gauge (3) shows a reading of
approx. 0.8 bar (11.6 psi).
If this pressure remains constant,
the carburetor is airtight. However, if
VA
208RA022
3
1
2
it drops, there are two possible
causes:
1. The inlet needle is not sealing
(foreign matter in valve seat or
sealing cone of inlet needle is
damaged or inlet control lever
sticking).
2. The metering diaphragm is
damaged.
– After completing test, open the
vent screw and pull the fuel line
off the elbow connector.
– Push the fuel hose onto the
elbow connector.
– Fit the carburetor box cover.
11.2 Carburetor
11.2.1 Leakage Test
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