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Fuel system
Check the needle valve and the lever
arm for damage or wear.
Replace damaged components with
new ones.
Check the needle valve for damage on
the tip and in the lever arm groove.
Check the lever arm for damage to the
groove for the needle valve and wear
on the mounting points towards the
control diaphragm.
Replace damaged components with
new ones.
In the event of leakage – remove the
needle valve.
In the event of leakage – remove the
needle valve.
Loosen the bolt and remove the lever
arm, axle, needle valve and spring.
Remove the pump diaphragm.
Check the diaphragm for damage.
Remove the fuel screen and clean it or
attach a new one.
Remove the bolt holding the cover over
the pump diaphragm.
Lift off the cover (A), the gasket (B) and
the diaphragm (C).
Check the diaphragm for damage to the
valve tongues. If the valve tongues are
bent, the pump will not function in a
satisfactory manner.
Hold it up to a light as well to discover
any holes in the material.
Carefully remove the fuel screen (D),
using a needle for example. Clean or
replace the fuel screen.
NOTE!
During assembly the pump
diaphragm should lie closest
to the carburettor housing.