Baureihe
2 625 01
2 625 02
2 625 02 i
Service Manual
SOLO
KLEINMOTOREN
GMBH
edition 4 dated 26.02.2018
Seite 15
4.7.4 Troubleshooting at the carburettors
•
Setting too lean
Lean setting can be detected if the engine does not accelerate properly or
if the EGT is too high.
o
Check typical setting of the adjustment needles first.
o
Clean the carburettor after removing the diaphragm-cover. The
clean remove idle and high speed adjustment screws. Clean all
openings with pressurized air. Clean also the fuel inlet with
pressurized air.
o
After reassembly of the inlet needle the proper sealing of the
valve has to be checked. It is necessary to use the pressure
tester (see above). Disconnect the fuel line and apply 0.4 bar of
pressure to the carburetor. The pressure-loss should not accede
0.1 bars per minute. If an electric fuel pump is installed, the
check can be conducted with this pump. First remove the
diaphragm cover and switch on the pump. No fuel should flow
out of the valve.
o
Adjust the carburetor as described above.
•
Setting too rich
Rich setting can be detected if power is low (RPM), shaking of the engine
and loss of RPM below 3.000 m above sea level.
o
Check typical setting of the adjustment needles first.
o
Replace air-filter or clean filter mesh (wash with fuel and dry with
compressed air)
o
Check the proper sealing of the inlet valve. It is necessary to use
the pressure tester (see above). Disconnect the fuel line and
apply 0.4 bar of pressure to the carburetor. The pressure-loss
should not accede 0.1 bars per minute. If an electric fuel pump is
installed, the check can be conducted with this pump. First
remove the diaphragm cover and switch on the pump. No fuel
should flow out of the valve.
o
Adjust the carburetor as described above.
