MAINTENANCE
Air filter
The air filter should be cleaned regularly removing dust and dirt to avoid:
•carburetor malfunction
• starting problems
• reduced engine power
• unnecessary wear to engine parts
• abnormal fuel consumption
Clean the filter after every 25 hours or more regularly if operating conditions are exceptionally dusty.
Cleaning the air filter Dismantle the air filter
cover and remove the air filter. Wash in clean, warm soapy water. Ensure that the filter is dry before refitting. An air filter used for a long period of time can never be cleaned completely. Therefore it is necessary to replace the filter from time to time with a new filter. A damaged air filter must always be replaced.
If the machine is used in dusty conditions the air filter should be soaked in oil, see the section on “Oiling the air filter“.
Oiling the air filter
Always use HUSQVARNA filter oil, order no. 503 47
contains a solvent to make it spread evenly through the
filter. You should therefore avoid skin contact. Put the
filter in a plastic bag and the pour the filter oil over it. Knead the plastic bag to distribute the oil. Squeeze
the excess oil out of the filter inside the plastic bag and
pour off the excess before
fitting the filter on the machine. Never use common engine oil. This would drain through the filter quite quickly and collect in the bottom.
Angle gear
The angle gear is filled with a sufficient quantity of grease at the factory. However, before using the machine you should check that the angle gear is filled to 3/4 with grease. Use special grease.
Normally, the grease does not need to be changed except when repairs are carried out.
NOTE: Use only HUSQVARNA replacement parts. Use of other brands of replacement parts can cause damage to your unit or injury to the operator or others. Your warranty does not cover damage or liability caused by the use of accessories and/or attachments not specifically recommended by
HUSQVARNA.
Maintenance schedule
Below you will find some general maintenance instructions.
Daily maintenance
•Check throttle trigger and throttle trigger lockout function.
•Check stop switch function.
•Check that blade/trimmer head does not rotate at idling.
•Clean the exterior of the machine.
•Check that the harness is undamaged.
•Check the guard for damage or cracks.
•Change the guard in case of impacts or cracks.
•Check the trimmer head for cracks and chips or damage. Replace if necessary.
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•Check that the locking nut is sufficiently tightened.
•Check that nuts and screws are sufficiently tightened.
Weekly maintenance
•Check the starter, especially cord and return spring.
•Clean the carburetor area.
•Clean the exterior of the spark plug.
•Remove it and check the electrode gap.
•Adjust it to 0,5 mm (.020"), or change the spark plug.
•Clean the cooling fins on the cylinder and check that the air intake at the starter is not clogged.
•Check that the angle gear is filled with grease up to 3/4. Use special grease.
•Clean the air filter.
•Clean or replace the muffler’s spark arrest screen (only mufflers with a catalytic converter).
Monthly maintenance
•Clean the fuel tank.
•Clean the exterior of the carburetor and the space around it.
•Clean the fan and the space around it.
•Check fuel hose for cracks or other damage. Change if necessary.
•Change fuel filter in fuel tank.
•Check clutch, clutch spring and clutch drum for wear. Change if necessary.
•Check electrical wires and connections.
•Change the spark plug.
•Change the airfilter.
•Check and clean the muffler’s spark arrest screen if necessary (only mufflers with a catalytic converter).
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