Extended Operation/Extreme Conditions - Echo SHC-1700 - Type 1, SHC-1700 - Type 1E, SHC-2100 - Type 1, SHC-2100 - Type 1E, SHC-2400 - Type 1, SHC-2400 - Type 1E, HCA-2400 - Operator's Manual

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Operation (HCA)
- Never adjust blade angle of HCA while standing.
- Only adjust cutting angle with HCA resting flat on the ground, with
the engine stop switch in the "STOP" position.
- Adjust cutting angle by moving locking lever (A) up. Depress blade
indexing lever (B) and change blade angle with rear cutter assembly
handle. Release indexing lever (B) into notch. Move locking lever (A)
down to completely engage internal gears.
IMPORTANT
Lever (A) does not secure gearbox angle setting. Moving lever in
the down position reduces internal play in the gear box. Do not
over tighten castle nut (C) to insure gear box angle setting
tightness because damage to internal gears will occur. If the lever
is loose or very tight adjust nut (C) for snug 90° movement.
EXTENDED OPERATION
Vibration and Cold
It is believed that a condition called Raynaud's Phenomenon, which
affects the fingers of certain individuals may be brought about by
exposure to vibration and cold. Exposure to vibration and cold may
cause tingling and burning sensations followed by loss of color and
numbness in the fingers. The following precautions are strongly
recommended because the minimum exposure which might trigger the
ailment is unknown.
• Keep your body warm, especially the head, neck, feet, ankles,
hands and wrists.
• Maintain good blood circulation by performing vigorous arm
exercises during frequent work breaks and also by not smoking.
• Limit the hours of operation. Try to fill each day with jobs where
operating the trimmer or other hand-held power equipment is not
required.
• If you experience discomfort, redness and swelling of the fingers
followed by whitening and loss of feeling, consult your physician
before further exposing yourself to cold and vibration.
Repetitive Stress Injuries
It is believed that overusing the muscles and tendons of the fingers,
hands, arms and shoulders may cause soreness, swelling, numbness,
weakness and extreme pain in those areas. Certain repetitive hand
activities may put you at a high risk for developing a Repetitive Stress
Injury (RSI). An extreme RSI condition is Carpal Tunnel Syndrome
(CTS), which could occur when your wrist swells and squeezes a vital
nerve that runs through the area. Some believe that prolonged exposure
to vibration may contribute to CTS. CTS can cause severe pain for
months or even years.
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EXTREME CONDITIONS
A
B
C