Assembly; Carburettor Settings - Husqvarna 122 HD60 Workshop Manual

Fuel system

Assembly

Check the distance piece for cracks.
A defective distance piece must be
replaced.
Make sure that the impulse channel is
entirely open.
Connect the fuel hose (D) to the
carburettor inlet.
Screw tight the carburettor and air fi lter
holder.
Connect the return fuel hose.
502 71 14-01
501 60 02-03
530 03 55-60
Assembly
Inspect the distance piece (A) for cracks
that can cause starting problems and
negative idling. Check also that the
impulse channel (B) is open and not
completely or partly blocked with grease,
for instance, or that the gaskets do not fi t
correctly. This also applies the impulse
channel in the cylinder.
A defective distance piece must be
replaced.
Place the carburettor gasket (C) in
position and fasten it with a little grease.
Connect the fuel hose (D) to the
carburettor inlet.
Connect the throttle cable.
Screw tight the carburettor and air fi lter
holder with the screws (E). Do not forget
the fan housing screws.
Connect the return fuel hose (F).

Carburettor settings

The carburettor's job is to deliver a combustible mixture of
air and gasoline to the cylinder.
The amount of this mixture is controlled with the throttle.
The high and low speed jets in the carburettor can only be
adjusted using the special tool 530 03 55-60.
Basic setting: H = 1 1/2, L = 1.
Setting idle speed:
1. Run the engine warm for about 4 minutes at 8,500–
9,000 rpm.
2. If the idle speed exceeds 3,700 rpm it can be lowered
by turning the idle screw (T) anticlockwise.
3. Adjust the idle speed to 2,800 – 3,100 rpm.
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