F20
F21
(1)
English
9. Maintenance
(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
IMPORTANT
•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
WARNING
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.
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