Jonsered CS 2240 Manuel d'utilisateur télécharger pdf (Page 38)

English – 39

Leakage at Fault with

Diffuser jets Needle valve

Leakage in impulse tube Pump diaphragm

Ventilation hole

on metering unit. Control diaphragm

Pressure testing the carburettor

Pressure testing should be carried out with the car-

burettor fully assembled. Testing should always be

carried out after the carburettor has been repaired,

but it can also be carried out as trouble shooting

before dismantling the carburettor.

See gure and carry out the test as follows:

Set the high and low jet screws two turns from

the bottom.

Connect pressure tester to the carburettor’s fuel

intake.

Lower the carburettor into a beaker of water (see

gure 37).

Pump the pressure up to 50 kPa.

No leakage is permitted. If a leakage occurs refer

to the table below.

Repair instructions

Fig 38

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 54 55

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Jonsered CS 2240 Manuel d'utilisateur Page 38