Husqvarna 165 R Workshop Manual page 13

When correctly adjusted. the needle valve lever should
be on a level with the carburettor housing (see Fig.
4:14) The lever can be adjusted by bending the forked
end up or down (press the needle valve down at the
same time).
Check that the lever and needle valve can move freely
after adjustment Pressure-test the carburettor as de-
scribed above (see Fig. 4:5)
Then fit the gasket, diaphragm and cover back in place
NOTE:
The centre stud of the diaphragm should fit in the opening
in the lever.
Refit the adjusting screws and adjust them to the basic
setting:
High speed needle H = 3/4 turn open
Low speed needle L = 1 turn open
Fitting the carburettor to
the cylinder
If the studs holding the carburettor were unscrewed
from the cylinder when backing off the carburettor
nuts, screw the short thread into the cylinder again.
Check that the choke control in the open position.
Fit the plastic sleeve over the carburettor adjusting
screws and secure it in place with the small nail.
Set the choke flap in the open position.
Open the throttle flap fully by pressing on the lever with
your index finger.
Push the carburettor into position over the studs, mak-
ingng sure that the pin of the choke flap shaft correctly
enters the groove in the choke control. Tighten the nuts.
4:4
Connect the fuel line and check that it has no kinks that
may interrupt the supply of fuel.
Fit the air cleaner in place.
Carburettor tuning
A. Basic setting
Before tuning the carburettor, proceed as follows:
Clean the air cleaner or fit a new one, if necessary
inspect the sparking plug and its electrodes.
not clogged.
Check that the fuel filter is
After checking the above, turn the carburettor adjusting
screws to the basic setting:
H = 3/4 turn, L = 1 turn
Use screwdriver No 501 60 02-01
Start the clearing saw and warm it up by cutting into a
stump or the like.
Adjust idling speed by turning throttle stop screw T to a
position where the saw blade tends to rotate, i.e. a
comparatively high idling speed.