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English –
41
Leak in
Fault with
Diffuser jets
Needle valve
Leak in the impulse pipe
Pump membrane
Ventilation hole above
Control membrane
metering unit
Pressure testing the carburettor
Pressure testing should be carried out with the car-
burettor fully assembled. The test shall always be
done after the carburettor has been repaired, but
can also be carried out as trouble shooting before
the carburettor is taken apart.
See figure 48 and check as follows:
1
Adjust the high- and low-speed screw to two revo-
lutions from
the bottom.
2
Connect pressure tester to the carburettor fuel
inlet.
3
Submerge the carburettor into a container with
water, see figure 48.
4
Pump up the pressure to 50 kPa.
5
No leaks are permitted. In case of leaks, see the
table below.
Repair instructions
Fig 48
Summary of Contents for GZ3500T
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