Husqvarna 525HF3S Operator's Manual page 12

Maintenance
Examine the fuel filter for contamination and the fuel hose for cracks and other
defects. Replace if it is damaged.
Clean or replace the spark arrester screen on the muffler. Refer to
check of the muffler on page 6 .
Clean the inner surface of the fuel tank.
Replace the spark plug.
Examine the clutch, clutch spring and the clutch drum for wear. Replace if it is
damaged by an approved servicing dealer.
Make sure that the gear housing is filled with grease.
Do a check of all cables and connections.
To adjust the idle speed
1. Clean the air filter and attach the air filter cover.
2. Start the product. Refer to
page 10 .
3. Turn the idle adjustment screw T clockwise until the
cutting unit starts to move.
4. Turn the idle adjustment screw counterclockwise
until the cutting unit stops.
WARNING:
not stop when you adjust the idle speed,
speak to your nearest servicing dealer.
Do not use the product until it is correctly
adjusted or repaired
Note:
The idle speed is correct when the engine
operates smoothly in all positions. Refer to for the
recommended idle speed.
To do maintenance on the muffler
The muffler decreases the noise level and directs the
exhaust gases away from the operator.
WARNING:
converters get very hot during operation and
will stay hot for some time after you stop the
product. This also applies at idle speed. If
12
To start the engine on
If the cutting unit does
Mufflers that have catalytic
operation
To do a
you touch the product it can result in burns
to the skin. Think about of the risk of fire.
1. Stop the product and let it cool down.
2. Remove the cover to the muffler.
3. Remove the screw holding the spark arrestor mesh.
4. Clean the spark arrestor mesh if it is blocked or
replace it if it is damaged.
CAUTION:
must be replaced if it is damaged. Do not
use a product if the spark arrestor mesh on
the muffler is missing or defective.
Before After 40 After 100
h
X
The spark arrestor mesh
1118 - 004 - 10.11.2022
h
X
X
X
X
X
X