Husqvarna 120 Operator's Manual page 20

Daily maintenance
Make sure that there is no damage
on the right hand guard.
Make sure that the muffler is correct-
ly attached, has no damages and
that no parts of the muffler are miss-
ing.
Clean or replace the air filter. Refer
To clean the air filter on page 22 .
to
Maintenance and checks of the safety
devices on the product
To do a check of the brake band
1. Use a brush to remove wood dust, resin and dirt
from the chain brake and clutch drum. Dirt and wear
can decrease the function of the brake. (Fig. 82)
2. Do a check of the brake band. The brake band must
be at a minimum of 0.6 mm/0.024 in thick at its
thinnest point.
To do a check of the front hand guard and the
chain brake activation
1. Make sure that the front hand guard is not damaged
and that there are no defects, such as cracks.
2. Make sure that the front hand guard moves freely
and that it is attached safely to the clutch cover. (Fig.
83)
3. Hold the product with 2 hands above a stump or
other stable surface.
WARNING: The engine must be off.
4. Let go of the front handle and let the guide bar tip fall
against the stump. (Fig. 84)
5. Make sure that the chain brake engages as the
guide bar tip hits the stump.
To do a check of the chain brake
1. Start the product. Refer to
page 15 for instructions.
WARNING: Make sure that the saw
chain does not touch the ground or other
objects.
2. Hold the product tightly.
3. Apply full throttle and tilt your left wrist against the
front hand guard to engage the chain brake. The
saw chain must stop immediately. (Fig. 85)
20
Weekly maintenance
To start the product on
Monthly maintenance
WARNING: Do not let go of the front handle.
To do a check of the throttle trigger and
throttle trigger lockout
1. Make sure that the throttle trigger and throttle trigger
lockout move freely and that the return spring works
correctly. (Fig. 44)
2. Press down the throttle trigger lockout and make
sure that it goes back to its initial position when you
release it. (Fig. 86)
3. Make sure that the throttle trigger is locked at the
idle position when the throttle trigger lockout is
released. (Fig. 87)
4. Start the product and apply full throttle.
5. Release the throttle trigger and make sure that the
saw chain stops and stays stationary.
WARNING: If the saw chain rotates
when the throttle trigger is in the idle
position, speak to your servicing dealer.
To do a check of the chain catcher
1. Make sure that there is no damage on the chain
catcher.
2. Make sure that the chain catcher is stable and
attached to the body of the product. (Fig. 24)
To do a check of the right hand guard
• Make sure that the right hand guard is not damaged
and that there are no defects, such as cracks. (Fig.
25)
To do a check of the vibration damping
system
1. Make sure that there are no cracks or deformation
on the vibration damping units.
2. Make sure that the vibration damping units are
correctly attached to the engine unit and handle unit.
Product overview on page 8 for information
Refer to
about where the vibration damping system is on your
product.
1063 - 002 - 06.03.2019