Husqvarna 553RBX Operating Instructions Manual page 21

Maintenance
Clean the air filter. Replace if it is necessary.
Make sure that the blade is sharp and put correctly in the center, look for cracks.
If the blade is not in the center correctly, it can cause damage to the product.
Examine the cutting attachment guard for damages and cracks. Replace it if it is
damaged.
Examine the trimmer head for damages and cracks. Replace it if it is damaged.
Make sure that the screws and nuts are tight.
Examine the engine, the fuel tank and the fuel lines for leaks.
Examine the transport guard. Make sure that the blade is not damaged and that
the transport guard can be attached correctly.
Clean the cooling system.
Examine the starter and the starter rope for damages.
Examine the vibration damping units for damages and cracks.
Clean the external surface part of the spark plug. Remove it and do a check of
the electrode gap. Adjust the electrode gap to the correct distance (refer to
Technical data on page 25 ) or replace the spark plug. Make sure that the spark
plug has a supressor.
Clean the external surface of the carburetor and the area around it.
Do a check of the bevel gear to make sure that it is filled ¾ with lubricant. Use
special grease to fill if it is necessary.
Clean or replace the spark arrestor mesh on the muffler.
Do a check of the fuel filter for contamination and the fuel hose for cracks or oth-
er defects. Replace if it is necessary.
Do a check of all cables and connections.
Do a check of the clutch, clutch springs and the clutch drum for wear. If it is nec-
essary to replace 1 or more of these units, speak to your servicing dealer.
Replace the spark plug. Make sure that the spark plug has a supressor.
Examine and clean the spark arrestor mesh on the muffler.
To adjust the idle speed
WARNING: Read the warning instructions in
the safety chapter before you start the
product. Refer to
WARNING: If the cutting attachment rotates
when the engine is at idle speed the idle
adjustment screw T must be turned
counterclockwise until the cutting
attachment stops.
1. Make sure that the air filter is clean.
2. Make sure that the air filter cover is in position.
3. Get the idle adjustment screw T.
1104 - 001 - 11.04.2019
Safety on page 4 ).
4. Turn the idle adjustment screw T clockwise until the
cutting attachment starts to rotate
T
.
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