Husqvarna K 770 Operator's Manual page 31

2. Apply a light oil to the spring.
To attach the spring assembly
• Assemble in the opposite sequence of
the spring assembly on page 30 .
To install the starter housing
CAUTION: The starter pawls must 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
the air filter on page 31
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
data on page 35 .
1. Start the engine.
1447 - 001 - 16.04.2020
To remove
To do the servicing of
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: 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.
A
B
B
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