Husqvarna 122 HD60 Workshop Manual page 19

Fuel system
Dismantle the fuel pump's diaphragm and
the valve housing.
Remove the control diaphragm and check
for any damage.
Remove the gasket.
Remove the lever arm and the needle
valve.
Check the lever arm and needle valve for
wear.
Remove the 4 screws (A).
Now lift off the fuel pump's diaphragm (B)
and the valve housing (C).
NOTE!
Make note of the location of both
short screws to avoid the locking of
the throttle and the choke shafts.
Remove the control diaphragm (D) and
check for material damage and wear on
the contact point with the lever arm.
Replace the carburettor if it is damaged.
Remove the gasket (E).
Remove the screw (F) and carefully
remove the lever arm (G) and the needle
valve (H).
Make sure not to lose the spring.
If one or more parts are worn, the
carburettor must be replaced with a new
one.
Check the wear to the lever arm partly
by the contact points against the control
diaphragm and partly by the cut-outs for
the needle valve.
Also check wear to the tip of the needle
valve and the groove for the lever arm.
If any of the parts are damaged, the
carburettor must be replaced with a new
one.
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