Husqvarna 120 Workshop Manual page 40

Repair Instructions
11
If necessary, dismantle throttle valve (M) and the
High (N) and Low (O) jet screws valve. Remove the
shafts with lever arms and springs. See figure 38.
Cleaning and inspection
Clean all units in clean petrol.
Use compressed air to dry the petrol on the com-
ponents. Direct the air through all channels in the
carburettor housing and ensure that they are not
blocked. Check the following:
1.
That the gasket, pump and control diaphragms are
undamaged.
2.
That there is no play on the throttle and choke valve
shafts.
3.
That the needle valve (E) and its lever arm (F) are
not worn. See figure 36.
4.
That the inlet manifold is intact. See figure 38.
5.
That the fuel screen (L) is intact and clean.
See figure 39.
6.
That the tips of the hight and low jet screws are not
damaged.
Assembly
Observe cleanliness when assembling the car-
burettor. The slightest contamination can result in
downtime.
1
If the throttle valve with shaft, lever arm and spring
is removed, this must be assembled. The spring is
tensioned 1-2 turns. Lubricate the shaft bearings
using a light oil. See figure 38.
2.
Fit the fuel screen (L) using the handle of a small
screwdriver. See figure 39.
3.
Fit the gasket (K), diaphragm (J) in the carburettor
as well as the cover. Screw in place screw (I) as
outlined in figure 39.
40
- English
Fig 38
L
Fig 39
O
N
M
K
J
I