To Do A Check Of The Battery And The Battery Compartment; To Do A Check Of The Battery Charger; To Clean The Cooling System; To Sharpen The Saw Chain - Husqvarna 120i Manual De Usuario

3. Put the product, with the motor off, on a stump or
other stable surface.
4. Hold the rear handle and let go of the front handle.
Let the product fall against the stump. (Fig. 96)
5. Make sure that the chain brake engages as the
guide bar hits the stump.
To do a check of the brake trigger
1. Put the product on stable ground and start it. See
Introduction on page 15 .
WARNING: Make sure that the saw
chain does not touch the ground or other
objects.
2. Wrap your fingers and thumbs around the handles
and hold the product tight. (Fig. 37)
3. Apply full power and tilt your left wrist against the
front hand guard to engage the chain brake. The
saw chain must stop immediately. (Fig. 97)
WARNING: Do not let go of the front handle!
To do a check of the power trigger lockout
1. Make sure that the power trigger and power trigger
lockout move freely and that the return spring works
correctly. (Fig. 98)
2. Press down the power trigger lockout and make sure
that it goes back to its initial position when you
release it. (Fig. 99)
3. Make sure that the power trigger is locked at the idle
position when the power trigger lockout is released.
(Fig. 100)
4. Start the product and apply full power.
5. Release the power trigger and make sure that the
saw chain stops and stays stationary. If the saw
chain rotates when the power trigger is in the idle
position, turn 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. 41)
To do a check of the keypad
1. Start the product. See
2. Press the start/stop button again.
3. Make sure that the product stops when you press
and hold the button. The green LED will go off. (Fig.
57)
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Operation on page 15
To do a check of the battery and the
battery compartment
1. Clean the battery and the battery compartment with
a soft brush. (Fig. 101)
2. Make sure that the cooling slots and battery
connectors are clean.
3. Make sure that the battery is not damaged and there
are no other defects, such as cracks. (Fig. 102)

To do a check of the battery charger

1. Make sure that the battery charger and the power
supply cord is not damaged. Look for cracks and
other defects.

To clean the cooling system

The product has a cooling system that keeps the
temperature of the product as low as possible.
The cooling system includes an air intake on the left side
of the product and a fan on the motor.
1. Clean the cooling system with a brush weekly or
more frequently if necessary. (Fig. 103)
2. Make sure that the cooling system is not dirty or
blocked.
CAUTION: A dirty or blocked cooling
system can cause the product to
become too hot. This causes damage to
the piston and cylinder.

To sharpen the saw chain

Information about the guide bar and saw chain

WARNING: Use protective gloves when you
use or do maintenance on the saw chain. A
saw chain that does not move can also
cause injuries.
Replace a worn or damaged guide bar or saw chain with
the guide bar and saw chain combination recommended
by Husqvarna. This is necessary to keep the safety
functions of the product. Refer to
26 , for a list of replacement bar and chain
combinations that we recommend.
• Guide bar length, in/cm. Information about the guide
bar length can usually be found on the rear end of
the guide bar.(Fig. 104)
• Number of teeth on bar tip sprocket (T).(Fig. 105)
• Chain pitch, in. The distance between the drive links
of the saw chain must align with the distance of the
teeth on the bar tip sprocket and drive sprocket.(Fig.
106)
• Number of drive links. The number of drive links is
decided by the type of guide bar.(Fig. 107)
Accessories on page
21