Husqvarna K 770 Operator's Manual page 30

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
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 do the servicing of the air filter
CAUTION: Be careful when you remove the
air filter. Particles that fall into the carburetor
inlet can cause damage.
CAUTION: Do not clean the air filter. The air
filter is made of paper and is easily
damaged.
WARNING: Use approved respiratory
protection when you replace the air filter.
The dust in the air filter is dangerous to your
health. Discard used air filters correctly.
Note: Replace the air filter only when it is damaged.
Examine the air filter if the engine power decreases.
30
A
B
B
1. Loosen the 3 screws on the air filter cover.
2. Remove the air filter cover.
3. Examine the air filter. Do step 6 and 7 if the filter is
not damaged.
4. Replace a damaged air filter.
a) Remove the air filter.
b) Install the new air filter.
5. Put back the air filter cover in its location.
6. Tighten the 3 screws.
To do a check of the water supply
system
1. Examine the nozzles on the blade guard and make
sure that they are not clogged.
2. Clean as necessary.
3. Examine the filter on the water connector. Make sure
that it is not clogged.
1447 - 001 - 16.04.2020