CARBURETTOR
English – 31
Fig. 17
Fig. 18
B
C
A
D D
Pressure testing
Pressure testing should be carried out with the carburettor
fully assembled. Testing should always be carried out
after the carburettor has been repaired, but can also be
performed for trouble shooting before dismantling.
Refer to g. 17 and carry out the test as follows:
1. Screw in the high and low speed jet screws and back
them off one turn.
2. Connect pressure tester 531 03 06-23 to the
carburettor fuel inlet.
3. Lower the carburettor into a beaker of water.
4. Pump up the pressure to 50 kPa (0.5 bar) and
clamp the pump tube.
5. There should be no leakage. If leakage occurs, refer
to the table below.
Leakage at Fault with
Diffuser jets Needle valve
Leakage in impulse tube Pump diaphragm
Ventilation hole above Control
diaphragm
metering unit
Retting to the chainsaw
See g. 18.
1. Loosen the air lter holder and position the
carburettor in place in the saw.
2. Bolt together the lter holder, carburettor and air
intake tube. Tighten the bolts to 1.5 Nm.
3. Ret the fuel pipe (B) to the fuel nipple and tube (C)
to the impulse nipple.
4. Ret the throttle cable and choke control.
5. Ret the carburettor control (A).
6. Ret the cylinder cover and air lter.
To Next Page
Loading...
