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Maintenance Schedule - Husqvarna 120 Operator's Manual

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Maintenance schedule

The following is a list of the maintenance steps that must be performed on the machine. Most of the items are described
in the Maintenance section.
Daily maintenance
Clean the outside of the machine.
Check that the components of the
throttle trigger work safely. (Throttle
lockout and throttle trigger.)
Clean the chain brake and check that
it operates safely. Make sure that the
chain catcher is undamaged, and
replace it if necessary.
The bar should be turned regularly for
more even wear. Check the
lubrication hole in the bar, to be sure it
is not clogged. Clean the bar groove.
If the bar has a sprocket tip, this
should be lubricated.
Check that the bar and chain are
getting sufficient oil.
Check the saw chain with regard to
visible cracks in the rivets and links,
whether the saw chain is stiff or
whether the rivets and links are
abnormally worn. Replace if
necessary.
Sharpen the chain and check its
tension and condition. Check the
drive sprocket for excessive wear and
replace if necessary.
Clean the starter units air intake.
Check that nuts and screws are tight.
Check that the stop switch works
correctly.
Check that there are no fuel leaks
from the engine, tank or fuel lines.
Check that the chain does not rotate
when the engine is idling.
Clean the air filter. Replace if
necessary.
MAINTENANCE
Weekly maintenance
Check the cooling system weekly.
Check the starter, starter cord and
return spring.
Check that the vibration damping
elements are not damaged.
Lubricate the clutch drum bearing.
File off any burrs from the edges of
the bar.
Clean or replace the spark arrestor
mesh on the muffler.
Clean the carburettor compartment.
Monthly maintenance
Check the brake band on the chain
brake for wear. Replace when less
than 0.6 mm (0.024 inch) remains at
the most worn point.
Check the clutch centre, clutch drum
and clutch spring for wear.
Clean the spark plug. Check that the
electrode gap is 0.6 mm.
Clean the outside of the carburettor.
Check the fuel filter and the fuel hose.
Replace if necessary.
Empty the fuel tank and clean the
inside.
Empty the oil tank and clean the
inside.
Check all cables and connections.
English – 27

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