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1. If the product is not easy to start or to operate or
if the product operates incorrectly at idle speed,
examine the spark plug for unwanted materials.
To decrease the risk of unwanted material on the
spark plug electrodes, do these steps:
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.
3. Make sure that the electrode gap is correct.
Refer to,
Technical data on page 23
.
4. Replace the spark plug monthly or more
frequently if necessary.
To clean the cooling system
CAUTION: A dirty or blocked
cooling system can make the product
too hot, which can cause damage to the
product.
The parts of the cooling system are the air intake on
the starter (A), the cooling fins on the cylinder (B)
and the cylinder cover (C).
1. Clean the cooling system with a brush weekly or
more frequently if it is necessary.
A
B
C
2. Make sure that the cooling system is not dirty or
blocked.
To adjust the idle speed
Your Husqvarna product is made to specifications
that decrease harmful emissions.
1. Make sure that the air filter is clean and that the
air filter cover is attached to the product.
2. Turn the idle speed screw (T) clockwise until the
cutting attachment starts to turn.
3. Turn the idle speed screw (T) counterclockwise
until the cutting attachment stops.
The idle speed is correct when the engine operates
smoothly in all positions. The idle speed must be
below the speed when the cutting attachment starts
to turn.
Note: Refer to
Technical data on page 23
for the
recommended idle speed.
WARNING: If the cutting
attachment does not stop when you
adjust the idle speed, speak to your
servicing dealer. Do not use the product
until it is correctly adjusted or repaired.
To apply grease to the two-piece
shaft
• Apply grease to the end of the drive shaft after
each 30 hours of operation.
1780 - 002 - 20.04.2022
21
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