Maintenance - Husqvarna 439 Manuel D'utilisation

Introduction
WARNING: Read and understand the safety
chapter before you do maintenance on the
product.
Maintenance schedule
Daily maintenance
Clean the external parts of the prod-
uct and make sure that there is no oil
on the handles.
Do a check of the throttle trigger and
throttle trigger lockout. Refer to
a check of the throttle trigger and
throttle trigger lockout on page 23 .
Make sure that there is no damage
on the vibration damping units.
Clean and do a check of the chain
Maintenance and
brake. Refer to
checks of the safety devices on the
product on page 22To do a check of
the chain brake on page 22 .
Do a check of the chain catcher. Re-
To do a check of the chain
fer to
catcher on page 23 .
Turn the guide bar, do a check of the
lubrication hole and clean the groove
in the guide bar. Refer to
check of the guide bar on page 31 .
Make sure that the guide bar and
saw chain are getting sufficient oil.
Do a check of the saw chain. Refer to
To examine the cutting equipment on
page 30 .
Sharpen the saw chain and do a
check of its tension. Refer to
sharpen the saw chain on page 27 .
Do a check of the chain drive sprock-
To do a check of the spur
et. Refer to
sprocket on page 30 .
Clean the air intake on the starter.
Make sure that nuts and screws are
tightened.
823 - 006 - 18.09.2019

Maintenance

Weekly maintenance
Clean the cooling system. Refer to
Cooling system on page 32 .
Do a check of the starter, starter rope
To do
and return spring.
Lubricate the needle bearing. Refer
To lubricate the needle bearing on
to
page 30 .
Remove burrs from the edges of the
guide bar. Refer to
the guide bar on page 31 .
Clean or replace the spark arrestor
mesh on the muffler.
Clean the carburetor area.
To do a
Clean or replace the air filter. Refer
To clean the air filter on page 26 .
to
Clean between the cylinder fins.
To
Monthly maintenance
Do a check of the brake band. Refer
To do a check of the brake band
to
on page 22 .
Do a check of the clutch centre,
clutch drum and clutch spring.
Clean the spark plug. Refer to
a check of the spark plug on page
27 .
Clean the external parts of the carbu-
To do a check of
rettor.
Do a check of the fuel filter and the
fuel hose. Replace if necessary.
Do a check of all cables and connec-
tions.
Empty the fuel tank.
Empty the oil tank.
To do
21