US-13
CHT2250
U
S
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SPARK ARRESTER (MA4)
• 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.
(1) Spark arrester
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INTAKE AIR COOLING VENT
• Never touch the cylinder, muffler, or
spark plugs with your bare hands
immediately after stopping the
engine. The engine can become very
hot when in operation, and doing so
could result in severe burns.
• Clean the cylinder fins with
compressed air or a brush. (MA5)
(1) Cylinder
(2) Intake air cooling vent (back)
• If waste gets stuck and causes
blockage around the intake air cooling
vent or between the cylinder fins, it may
cause the engine to overheat, and that
in turn may cause mechanical failure
on the part of the hedge-trimmer.
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BLADES
Oil blades each gas tank filling. (MA6)
• Make sure that the blade bolts are
well tightened.
• The blade assembly is designed to
automatically compensate for any
play between the blades.
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Sharpening (MA7)
Always keep the file or sharpener at an
angle of 45° to the blade, and:
• Always grind in the direction of the
cutting edge;
• Note: files cut only in one direction; lift
WARNING
IMPORTANT
WARNING
MA4
MA5
MA6
MA7
MA8
MA9
8. Maintenance
the file from the blade when returning
to start a new pass;
• Remove all burr from the edge of the
blade with a slip stone;
• Remove as little material as possible;
• Before refitting the sharpened blades,
remove filings and then apply grease.
Do not try to sharpen a damaged blade:
change it or take it to a Service dealer.
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REDUCTION GEARBOX
Refill gear housing every 25 working
hours.
Use greese pump. Feed greese until it
comes out of the base of blades. (MA8)
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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.
3. Check to see if any oil or grease has
worked its way in between the clutch
lining and drum, and if it has wipe it
away using oil-free, lead-free gasoline.
Summary of Contents for CHT2250
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