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4. Tighten the 4 screws on the starter
To examine the carburetor
Note: The carburetor has rigid needles to make sure
that the product always receives the correct mixture of
fuel and air.
1. Examine the air filter. Refer to
To examine the air
filter on page 35
2. If it is necessary, replace the air filter.
3. If the engine continues to decrease in power or
speed, speak to your HUSQVARNA servicing dealer.
To examine the fuel system
1. Make sure that the fuel tank cap and its seal are not
damaged.
2. Examine the fuel hose. Replace the fuel hose if it is
damaged.
To adjust the idle speed
WARNING:
If the cutting blade rotates
at idle speed, speak to your servicing dealer.
Do not use the product until the idle speed is
correctly adjusted or repaired.
Note: For recommended idle speed refer to
Technical
data on page 39
.
1. Start the engine.
2. Examine the idle speed. When the carburetor is
correctly adjusted, the cutting blade stops when the
engine is at idle speed.
3. Use the T screw to adjust the idle speed.
A
B
A B
T
a) Turn the screw clockwise until the blade starts to
rotate (A).
b) Turn the screw counterclockwise until the blade
stops to rotate (B).
Fuel filter
The fuel filter is installed in the fuel tank. The fuel filter
prevents contamination of the fuel tank when the fuel
tank is filled. The fuel filter must be replaced yearly or
more frequently if it is clogged.
CAUTION: Do not clean the fuel filter.
To examine the air filter
Note:
Examine the air filter only if the engine power
decreases.
CAUTION: Be careful when you
remove the air filter. Particles that fall into
the carburetor inlet can cause damage.
WARNING: Use approved respiratory
protection when you clean or replace the air
filter. Discard used air filters correctly. The
dust in the air filter is dangerous to your
health.
1. Loosen the 3 screws on the air filter cover.
2. Remove the air filter cover.
1631 - 001 - 04.05.2021
35
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