Husqvarna 120 Manual De Usuario página 22

2. Turn the idle speed screw clockwise until the saw
chain starts to rotate.
3. Turn the idle speed screw counterclockwise until the
saw chain stops.
Note:
The idle speed is correctly adjusted when the
engine runs correctly in all positions. The idle speed
must also be safely below the speed at which the saw
chain starts to rotate.
WARNING:
stop when you turn the idle speed screw,
speak to your servicing dealer. Do not use
the product until it is correctly adjusted.
To examine if the carburetor is correctly
adjusted
• Make sure that the product has the correct
acceleration capacity.
• Make sure that the saw chain does not rotate at idle
speed.
CAUTION:
can cause damage to the engine.
To replace a broken or worn starter
rope
1. Loosen the screws to the starter housing
2. Remove the starter housing. (Fig. 92)
3. Pull out the starter rope approximately 30 cm/12 in
and put it in the notch on the pulley.
4. Let the pulley rotate slowly rearward to release the
recoil spring. (Fig. 93)
5. Remove the center screw, the pulley (A) and the
recoil spring (B).
WARNING:
when you replace the return spring or
the starter rope. The recoil spring is in
tension when it is wound up in the starter
housing. If you are not careful, it can
eject and cause injuries. Use protective
glasses and protective gloves.
6. Remove the used starter rope from the handle and
the pulley.
7. Attach a new starter rope to the pulley. Wind the
starter rope approximately 3 turns around the pulley.
8. Connect the pulley to the recoil spring. The end of
the recoil spring must engage in the pulley.
9. Assemble the recoil spring, the pulley and the center
screw.
22
If the saw chain does not
Incorrect adjustments
You must be careful
10. Pull the starter rope through the hole in the starter
housing and the starter rope handle.
11. Make a tight knot at the end of the starter rope. (Fig.
94)
To tighten the recoil spring
1. Put the starter rope into the notch in the pulley.
2. Turn the starter pulley approximately 2 turns
clockwise.
3. Pull the starter rope handle and pull out the starter
rope fully.
4. Put your thumb on the pulley.
5. Move your thumb and release the starter rope.
6. Make sure that you can turn the pulley ½ turn after
the starter rope is fully extended. (Fig. 95)
To assemble the starter housing on the
product
1. Pull out the starter rope and put the starter in
position against the crankcase.
2. Slowly release the starter rope until the pulley
engages with the pawls.
3. Tighten the screws that hold the starter. (Fig. 96)
To clean the air filter
Clean the air filter regularly from dirt and dust. This
prevents carburetor malfunctions, starting problems,
loss of engine power, wear to engine parts and more
fuel consumption than usual.
1. Remove the cylinder cover and the air filter.
2. Use a brush or shake the air filter clean. Use
detergent and water to clean it fully.
Note:
An air filter that is used for a long time can
not be fully cleaned. Replace the air filter regularly
and always replace a damaged air filter.
3. Attach the air filter and make sure that the air filter
seals tightly against the filter holder. (Fig. 97)
Note:
Because of different work conditions, weather
or season, your product can be used with different types
of air filter. Speak to your servicing dealer for more
information.
To do a check of the spark plug
CAUTION:
spark plug. Refer to
27 . An incorrect spark plug can cause
damage to the product.
Use the recommended
Technical data on page
930 - 007 - 06.03.2023