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Spark Arrester
WARNING
POTENTIAL HAZARD
• Muff ler surface becomes hot when
Trimmer/Brushcutter is in operation and
remains hot for some time after the
engine is shut off.
WHAT CAN HAPPEN
• Contact with hot muffler surfaces could
cause a burn.
HOW TO AVOID THE HAZARD
• Make sure the muff ler is cool before
inspecting and cleaning the spark
arrester.
Maintenance Interval
• The spark arrester should be inspected and cleaned
after every 25 hours of use.
• Replace the screen if it cannot be thoroughly
cleaned, or if it is damaged.
Spark Arrester Maintenance
1.
With the engine at ambient (room) temperature,
loosen the knob and remove the air filter cover.
2.
Twist the high tension lead boot on the spark plug
back and forth a couple of times to loosen the
boot, then pull the boot off of the spark plug.
3.
Loosen the knob and lift off the cylinder cover.
4.
Remove and clean the tail, gasket and spark arrester
with a safety solvent and a stiff brush. If any part
cannot be thoroughly cleaned, it must be replaced.
Spark Arrester
Socket Head Screw
Tail
5.
Reinstall the spark arrester and tail onto the muf-
fler, then reinstall and tighten the two socket head
screws.
6.
Reinstall the cylinder cover and the air filter
cover.
Exhaust Muffler
Maintenance Interval
The muffler should be inspected and cleaned after each
100 hours of use.
Muffler Maintenance
1.
With the engine at ambient (room) temperature,
loosen the knob and remove the air filter cover.
2.
Twist the high tension lead boot on the spark plug
back and forth a couple of times to loosen the
boot, then pull the boot off of the spark plug.
3.
Loosen the knob and lift off the cylinder cover.
4.
Remove the spark arrester (see spark arrester
maintenance), Clean the muffler with a stiff brush.
IMPORTANT: Don't use solvent for cleaning
inside of muffler, because of the catalytic con-
verter in muffler.
Be careful not to allow any dirt or debris to fall
into the exhaust port, as this can cause engine
damage.
5.
Reinstall the spark arrester and tail onto muffler,
then reinstall and tighten the two socket head
screws.
6.
Reinstall the cylinder cover and the air filter
cover.
— US-20 —
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