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17
MAINTENANCE
Air filter
The air filter must be regularly cleaned to
remove dust and dirt i n order to avoid:
S Carburetor malfunctions
S Starting problems
S Loss of engine power
S Unn ecessary wear to engine parts
S Excessive fuel consumption
Clean the filter every 25 hours, or more
regularly if conditions are exceptionally
dusty.
Cleaning the air filter
Remove the air filter cover and take out the
filter . Wash it clean in warm, soapy water .
Rinse thoroughly . Ensure that the filter is dry
before refitting it.
An air filter that has been in use for a long
time cannot be cleaned completely. T he
filter must therefore b e replaced with a new
one at regular intervals. A damaged air
filter must always be replaced.
Mainte nance schedule
Below yo u will find some general mainte-
nance instructions.
Daily maintenance
S Check throttle trigger and th rottle trigger
lockout functi on.
S Check that the stop switch works
correctly.
S Check that there are no fuel leaks from
the engine, tank or fuel lines.
S Check that the cutter does not ro tate
when the engine is idling.
S Cle an t he outside of the machine.
S Check that the harness is not dam aged.
S Check that the blade guard i s not dam -
aged or cracked.
S Replace the blade guard if it is exposed to
impact or is cracked.
S A non--balanced trimm er he ad i nduces
heavy vibrations that may damage the
machine.
S Check that nuts and screws are tight.
S Check that the trimmer head is tight.
Weekly maintenance
S Check the starter and starter cord.
S Clean the carburetor area.
S Clean the outside of the spark plug. Re-
move it and check the e lectrode gap. Ad-
just the gap to 0.024s (0.6 mm), or
replace t he spark plug. Use resistor spark
plug Champion RCJ--8Y or equivalent.
S Clean the cooling fins on the cylinder and
check that the air intake near the starter
is not blocked.
S Clean the air filter .
Monthly maintenance
S Clean the fuel tank.
S Clean the outside of the carburetor and
the space a round it.
S Clean the fan and the area around it.
S Check fuel lines for cracks or other dam-
age. Change if necessary.
S Change the fuel filter in fuel tank.
S Check the clutch, clutch sp rings and the
clutch drum for wear. Replace if neces-
sary.
S Check electrical wires and connections.
S Replace the spark plug. Use resistor
spark plug Champion RCJ--8Y or equiva-
lent.
S Change the air filter.