Husqvarna 129C Workshop Manual page 37

7
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.
See figure 47.
8
Unscrew both jet needles H and L using the
special tool no. 530 03 55-60. See figure 48.
NOTE!
Note how the jets are positioned.
(For example, the H-needle is a little
shorter than the L-needle).
Inspect the needles for damage such as a broken
tip.
The pump unit
1
Remove the 2 screws holding the cover over the
pump diaphragm.
2
Lift off the cover (A), the gasket (B) and the pump
diaphragm (C).
3
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.
4
Carefully remove the fuel screen (D), using a
needle for example. Clean or replace the fuel
screen.
Fig 47
Fig 48
Fig 49
Fuel system
37
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