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100 – English
CARBURETTOR
Pressure testing
Refitting onto chain saw
Fit the carburettor to the chain saw and
refit any other parts removed.
For tightening torques, see the ”Service
data” for the saw in question.
Carburettor adjustment. See the operating
instructions for the saw in question.
Make the test as follows:
1. Set the high and low speed jet screws
one turn open from the bottom.
2. Connect pressure tester 502 50 38-01
to the carburettor’s fuel intake.
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 with the
spring clip.
5. There should be no leakage. If a
leakage occurs refer to the table below.
Pressure testing should be carried out with the
carburettor fully assembled. Testing should
always be carried out after the carburettor has
been repaired, but a test can also be made for
trouble shooting before dismantling.
!
WARNING!
The fuel used in the chain saw
poses the following hazards:
1. The liquid and its vapours are
poisonous.
2. Can cause skin irritation.
3. Is highly inflammable.
Leakage on Fault with
Diffuser jets Needle valve
Leakage on the Pump diaphragm
pulse tube
Ventilation hole Control diaphragm
above the metering unit
Eng, p 83-124 96-09-13, 11.11100