Husqvarna R135 Workshop Manual page 23

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22
Fuel system
Dismantling the carburettor
Remove the control diaphragm and
check for damage.
Replace if required.
Pressure test the metering unit.
531 03 06-23
In the event of leakage – remove the
needle valve.
Dismantling the carburettor
Unscrew the 2 bolts that hold the control
diaphragm cover and lift off the cover.
Carefully remove the control diaphragm
(A) and gasket (B).
Check the diaphragm for holes and
wear on the pin (C).
Replace the diaphragm if required.
Connect pressure tester 531 03 06-23 to
the fuel hose nipple.
Lower the carburettor in a vessel with
petrol in order to discover any leaks
more easily.
Test the pressure at 50 kPa.
No leakage is permitted.
In the event of leakage – remove the
needle valve.
Loosen the bolt and remove the lever
arm, axle, needle valve and spring.