Husqvarna 140R - Manual (Page 5)

The carburettor has three adjusting screws
L = Low speed needle
H = High speed needle
T = Throttle adjusting screw
The adjustment should only be carried out by a trained mechanic.
The engine shall be warm and the air filter clean. Screw the
needles H and L right in by means of a small screwdriver but not
too hard, as this can damage their seats. From this position screw
the L needle out 1turn
the H needle out 3/4 turn
The throttle screw T should be adjusted so that the idling speed is
2.400-2.600 rpm.
NOTE!
It is most important to ensure that the carburettor is correctly
tuned. The high speed needle shall be adjusted so that maximum
power is obtained and not maximum revs. The blade must not
rotate when the engine is idling.
AIR FILTER CLEANING
Remove the air filter cover.
Remove the air filter and clean it in petrol.
Before assembling the air filter, make sure that it is quite dry.
Check that the filter is mounted on its proper place in the air filter
holder. Assemble the cover and be sure not to damage the
threads of the screw.
REPLACING THE STARTER CORD
AND RETURN SPRING
Undo the three screws and remove the starter unit and the distanci
piece. Zero-set the return spring by letting carefully the pulley
rotate backwards (clockwise).
Remove the screw in the centre of the pulley. Lift the pulley off
and check, that the return spring does not come with it.
If necessary, replace the return spring and lubricate it with not too
much grease.
If necessary, replace the starter cord. Check that the cord knot is
put at the bottom of the cord pocket.
Wind the cord around the pulley and put it in the starter housing.
Check that the spring gears into the recess at the hole of the
pulley centre.
Tighten the screw in the centre. Tension the return spring by
turning the pulley (complete with cord and starter handle) about
two turns in counter clockwise direction.
Pull out the cord completely and check that it is possible to turn
the pulley about half a turn further and that the spring does not
“bottom”.
Fit the starter unit to the crankcase. Do not forget the distance
piece.