48
502 50 38-01
4
Fuel system
Fit the valve and valve shafts.
NOTE!
Use Locktite on the valve screws.
Fit the pump section parts in the reverse
order to dismantling.
Fit the different parts in the metering
section in the reverse order to dismantling.
Check that the carburettor is tight.
No leakage is permissible at 50 kPa
pressure.
● Fit the valve and valve shafts.
NOTE!
Check that the valve and valve shafts are
turned the right way round and that they
seal completely tight in closed position.
Use Locktite on the valve screws.
Tips!
Any number designations on the valve
should be able to be read from outside.
Replace the fuel filter if it is damaged or
cannot be cleaned.
Place the pump diaphragm closest to the
carburettor housing, followed by the
gasket and cover.
Fit the different parts in the metering
section in the reverse order to dismantling.
NOTE!
The H-needle is slightly
shorter
than the
L-needle.
Check that the lever is level:
– With the carburettor housing
(Tillotson).
– With the cast heads (Walbro, Zama).
Too high setting = too much fuel.
Too low setting = too little fuel,
Connect pressure tester No.
502 50 38-01 to the fuel intake in the
carburettor.
Pump up to 50 kPa pressure.
Submerge the carburettor in a basin
containing petrol to more easily discover
leakage.
No leakage is permissible.
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