Assembly - Husqvarna 555FX Workshop Manual

3
24
Fuel system
Check that the carburettor is sealed.
No leakage is permitted at 50 kPa.
531 03 06-23
Attach the control diaphragm and cover.

Assembly

Assemble the fuel hose (A) and the link
rod (B).
Connect pressure tester 531 03 06-23
to the fuel intake on the carburettor.
Pump up the pressure to 50 kPa.
Lower the carburettor in a vessel with
petrol in order to discover any leaks
more easily.
No leakage is permitted.
Place the gasket on the carburettor
housing and then the control diaphragm.
Check that the air hole in the cover is
open and screw the cover on.
Assemble the jets (H) and (L).
Place the sleeve (A) and the spring (B)
on the jets and slide the components
into the carburettor housing. Note that
the cut-out in the sleeve should be
turned to face the bar in the carburettor
housing. Use tool 530 03 55-06 to press
in the sleeve and screw in the jet.
When the sleeve has been pressed in
using the tool, the jet can be adjusted
freely.
Carefully screw the jet until it bottoms
and then screw it outwards.
This applies to both jets.
The default setting is:
H = 2 3/4 turns open
L = 1 3/4 turns open
530 03 55-60
Assembly
1. Connect the fuel hose (A). Make
sure it comes under the stud bolts!
2. Assemble the link rod (B) between
the carburettor and the supply air
damper.
505 38 13-08