Husqvarna 120 Mark II Manuel D'utilisation page 23

2. Turn the idle adjustment screw, which is
identified with a "T" mark,
counterclockwise until the saw chain
stops.
3. The idle speed must be below the speed
when the saw chain starts to turn. The
idle speed is correct when the engine
operates smoothly in all positions.
To clean the spark arrester screen
1. Use a wire brush to clean the spark
arrester screen.
To do maintenance on the spark
plug
CAUTION:
recommended spark plug. Make
sure that the replacement is the
same as the manufacturer
supplied part. An incorrect spark
plug can cause damage to the
product.
1. If the product is hard to start or operate,
examine the spark plug for unwanted
materials. To decrease the risk of
unwanted material on the spark plug
electrodes:
a) make sure that the idle speed is
correctly adjusted.
b) make sure that the fuel mixture is
correct.
c) make sure that the air filter is clean.
2. Clean the spark plug if it is dirty. Make
sure that the electrode gap is correct.
3. Replace the spark plug when it is
necessary.
To clean the air filter
1. Remove the air filter cover and remove
the air filter.
654 - 006 - 10.02.2020
Use the
2. Clean the air filter with warm soap
water. Make sure that the air filter is dry
before you install it.
3. Replace the air filter if it is too dirty to
fully clean it. Always replace a damaged
air filter.
To sharpen the saw chain
The cutter
The cutting part of the saw chain is called
the cutter and consists of a cutting tooth (A)
and the depth gauge (B). The cutters
cutting depth is determined by the
difference in height between the two, the
depth gauge setting (C).
When you sharpen a cutting tooth there are
four important factors to remember:
• Filing angle.
A
A
B
C
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