Husqvarna 241R Workshop Manual page 20

Fuel system
Check the needle valve and the lever arm
for damage or wear.
Replace damaged components with new
ones.
Remove the pump diaphragm.
Check the diaphragm for damage.
Remove the fuel screen and clean it or
attach a new one.
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.
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 satis-
factory 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.
Pull the locking plugs (A) off over the jet
needle with the aid of the special tool
540 06 82-01 (left-hand threads).
The plugs cannot be dismantled if the slot
in the plug is centred above the ball (B) in
the carburettor housing.
Unscrew the jet needles.
NOTE!
Note how the jets are positioned.
(For example, the H-needle is a little
shorter than the L-needle).
540 06 82-01
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