Husqvarna K 770 Dry Cut Operator's Manual page 28

3. Slowly release the starter rope until the starter pawls
are in the correct position.
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
filter on page 28
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: Recommended idle speed is 2700 rpm.
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.
T
a) Turn the screw clockwise until the cutting blade
starts to rotate.
b) Turn the screw counterclockwise until the cutting
blade stops to rotate.
28
To examine the air
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
CAUTION: Be careful when you remove the
air filter. Particles that fall into the carburetor
inlet can cause damage.
Examine the air filter if the engine power decreases.
1. Loosen the 3 screws on the air filter cover.
2. Remove the air filter cover.
3. Examine the air filter. If it is necessary, replace the
To replace the air filter on page
air filter. Refer to
28 .
4. Replace the air filter cover.
5. Tighten the 3 screws.
To replace the air filter
CAUTION: Do not clean the air filter with
compressed air. The air filter is made of
paper and is easily damaged.
CAUTION: Unhealty dust can be spread out
during filter change. Wear approved
respiratory protection. Dispose filters
correctly.
Note: Replace the service filter only when it is damaged.
861 - 003 - 12.11.2018