Husqvarna K 770 Manuel D'utilisation page 32

2. Apply a light oil to the spring.
To attach the spring assembly
• Assemble in the opposite sequence of
the spring assembly on page 31 .
To install the starter housing
CAUTION:
come into the correct position against the
starter pulley sleeve.
1. Put the starter housing against the product.
2. Pull out and release the starter rope slowly until the
starter pulley engages with the starter pawls.
3. Tighten the 4 screws on the starter housing.
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 32
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:
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
data on page 36 .
1. Start the engine.
32
To remove
The starter pawls must
To examine the air
If the cutting blade rotates
Technical
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:
To examine the air filter
Note:
Examine the air filter only if the engine power
decreases.
CAUTION:
remove the air filter. Particles that fall into
the carburetor inlet can cause damage.
WARNING:
protection when you replace the air filter.
The dust in the air filter is dangerous to your
health. Discard used air filters correctly.
A
B
B
Do not clean the fuel filter.
Be careful when you
Use approved respiratory
1447 - 004 - 04.05.2021