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the muffler may get loose during operation
which may result in engine catching on
fire.
■ SPARK ARRESTER
• The muffler is equipped with a spark
arrester to prevent red hot carbon from
flying out of the exhaust outlet.
Periodically inspect and clean as
necessary with a wire brush. In the State
of California it is required by law (Section
4442 of the California Public Resources
Code) to equip a spark arrester when a
gas powered tool is used in any forest
covered, brush covered, or grass covered
unimproved land.
■ AIR INLET SCREEN
• Blowing air is taken in from the air inlet
screen. When air flow has dropped down
during operation, stop the engine and
inspect the air inlet screen for blocking by
obstacles.
• Note that failure to remove any such
obstacles may result in the engine
becoming overheated and damaged.
• Never use the blower without the
screen at the air intake of the blower.
WARNING
IMPORTANT
■ SPARK PLUG
• The spark plug may gather carbon
deposits on its firing end with reasonable
use. Remove and inspect the spark plug
every 25 hours and clean the electrodes
as necessary with a wire brush. The spark
gap should be adjusted to .024~.028 in.
(0.6~0.7mm).
• Plug manufacturers recommend replacing
the plug twice a year to avoid unexpected
plug failure in a job.
REPLACEMENT PLUG IS A NGK BPMR7A.
• Note that using any spark plugs other than
those designated may result in the engine
failing to operate properly or in the engine
becoming overheated and damaged.
• To install the spark plug, first turn the plug
until it is finger tight, then tighten it a
quarter turn more with a socket wrench.
■ MUFFLER
•Inspect periodically the muffler for
loose fasteners, any damage or
corrosion. If any sign of exhaust
leakage is found, do not use the blower
and have it repaired immediately.
• Note that failing to do so may result in
the engine catching on fire.
• Before starting operation, always make
sure to check if the muffler is properly held
by two bolts to the cylinder. (Fastening
Torque : 70~110kg·cm)
• Even if one bolt out of two bolts is loose,
IMPORTANT
WARNING
IMPORTANT
Maintenance
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