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MAINTENANCE
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.
• A non-balanced blade/trimmer head induces heavy
vibrations that may damage the machine.
• 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).
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
73-01. The filter oil
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.