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9. Maintenance
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(1) Bolt (2) Bolt
(3) Spark arrester (4) Diffuser
■ 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 Pulic
Resources Code) to equip a spark arrester when a
gas powered tool is used in any forest covered, bush
covered, or grass covered unimproved land.
■ PROCEDURES TO BE PERFORMED AFTER
EVERY 100 HOURS OF USE
1. Remove the muffler, insert a screwdriver into the
vent, and wipe away any carbon buildup. Wipe away
any carbon buildup on the muffler exhaust vent and
cylinder exhaust port at the same time.
2. Tighten all screws, bolts, and fittings.
■ AIR INLET NET
• Blowing air is taken in from the air inlet net. When air
flow has dropped down during operation, stop the
engine and inspect the air inlet net for blocking by
obstacles.
• Note that failure to remove any such obstacles may
result in the engine becoming overheated and
damaged.
(1) Net
Never use the blower without the net of the blower.
Before each use, check that the net is attached in
place and is free from any damage.
■ IGNITION COIL AIR GAP INSPECTION
• If the gap is out of standard or when installing the
coil or rotor, adjust the air gap between the ignition
coil and the iron core of the rotor.
WARNING
IMPORTANT
(1)
F21
F20