Husqvarna K 770 VAC Manuel D'utilisation page 60

Problem
The product does not start.
The cutting blade rotates at idle
speed.
The cutting blade does not rotate
when the operator throttles up.
The product has no power when the
operator tries to throttle up.
The vibration levels are too high.
The temperature of the product is too
high.
The engine decreases in power or in
speed.
The dust is not collected properly
during cutting.
60
Cause
The start procedure is done incor-
rectly.
The stop switch is in the right (STOP)
position.
There is no fuel in the fuel tank.
The spark plug is defective.
The clutch is defective.
The idle speed is too high.
The clutch is defective.
The belt is too loose or defective.
The clutch is defective.
The cutting blade is installed incor-
rectly.
The air filter is clogged.
The fuel filter is clogged.
The fuel tank flow is blocked.
The cutting blade is installed incor-
rectly.
The cutting blade is defective.
A vibration damping unit is defective.
The air intake or the flanges that de-
crease the temperature is blocked.
The belt moves.
The clutch is defective.
The air filter is clogged.
Improper cutting technique.
The attached dust extractor is not ex-
tracting dust.
Possible solutions
To start the product with a
Refer to
cold engine on page 51 and To start
the product with a warm engine on
page 53 .
Make sure that the stop switch
(STOP) is in the left position.
Fill with fuel.
Replace the spark plug.
Speak to your service agent.
Adjust the idle speed.
Speak to your service agent.
Tighten the belt or replace the belt
with a new one.
Speak to your service agent.
Make sure that the cutting blade is
correctly installed.
Examine the air filter. If it is necessa-
ry, replace it.
Replace the fuel filter.
Speak to your service agent.
Make sure that the cutting blade is
correctly installed and that it is not
Correct cutting
damaged. Refer to
blades on page 46 .
Replace the cutting blade and make
sure that it is not damaged.
Speak to your service agent.
Clean the air intake and the flanges
that decrease the temperature.
Examine the belt. Adjust the tension.
Always cut at full throttle.
Examine the clutch. Speak to your
service agent.
Examine the carburetor. Refer to
examine the carburetor on page 58
Basic working techniques on
Refer to
page 49 .
Refer to Operator´s manual of the
dust extractor.
705 - 003 - 22.04.2022
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