Operating Precautions
■
Always make sure the cutting
attachment tool is properly
installed and firmly tightened
before operation.
■
Never use a cracked or
warped cutting attachment:
replace it with a serviceable
one and make sure it fits
properly.
■
Keep the unit away from
excessive heat. Engine fuel is
very flammable and fire could
lead to serious personal injury
or property damage.
■
Make sure there are no
missing or loose fasteners,
and that the stop switch and
throttle controls are working
properly.
WARNING!
■
Before starting the engine,
make sure the cutting
attachment is not contacting
anything.
■
Always stop the engine
immediately and check for
damage if you strike a foreign
object or if the unit becomes
tangled. Do not operate with
broken or damaged equip-
ment.
■
Never transport the unit or set
it down with the engine
running. An engine that’s
running could be accidently
accelerated causing the
cutting attachment to rotate.
■
Make sure cutter safety
guards are in place when
transporting the unit.
Never
extend trimming line
beyond the length specified for
your unit.
Always
keep the unit as clean as
practical. Keep it free of loose
vegetation, mud, etc.
CAUTION!
SAFETY
Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS
Poor
acceleration.
Clogged air cleaner
element.
Clogged fuel filter.
Carburetor mixture
too lean.
Idle speed set too low.
Clean the air cleaner
element.
Replace the fuel filter.
Consult with an authorized
servicing dealer.
Adjust: 2,750 rpm (min
-1
) (
Ⳳ
250)
Symptom
Possible Cause
Remedy
Engine stops
abruptly.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or
loose terminal.
Ignition failure.
Piston seizure.
Reset the switch and re-start.
Refuel.
Replace filter.
Drain and refill with fresh, clean
unleaded gasoline with a pump octane
of 87 or higher mixed with
50:1 Shindaiwa Premium 2-cycle
mixing oil or with an equivalent high
quality 2-cycle mixing oil.
Clean and replace spark plug,
tighten the terminal.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Engine difficult
to shut off.
Ground (stop) wire is
disconnected, or switch
is defective.
Overheating due to
incorrect spark plug.
Overheated engine.
Test and replace
as required.
Replace the spark plug with a
Champion CJ8 or equivalent spark
plug of the correct heat range.
(For electro magnetic compliance
(EMC) use a NGK BMR6A resistor plug)
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm).
Idle engine until cool. Refer to
page 20 (overheated engine).
Cutting
attachment
moves at
engine idle.
Engine idle too high.
Broken clutch spring or
worn clutch spring boss.
Set idle: 2,750 rpm (min
-1
) (
Ⳳ
250)
Replace spring/shoes as
required, check idle speed.
TROUBLESHOOTING
22
