The more the variable speed control
trigger is pulled, the higher the speed
becomes.
The EY7443 offers AUTO mode,
which detects the load on the tool and
automatically switches between HIGH
and LOW speed operation.
When the load is low, the tool always
starts operation in HIGH speed.
When the tightening torque increases,
the tool switches to LOW speed. Keep
a secure grip on the tool so that it
doesn’t twist out of your hands due to
the increased torque.
When operating in AUTO mode,
whether and when the tool switches
bet ween HIG H and LOW s peed
operation will depend on the specific
work conditions. These variations in
tool behavior are normal and do not
represent a malfunction.
NOTE:
When selecting AUTO on the
EY7443
During AUTO mode operation, the tool
may switch to LOW speed under light
loads if there is little remaining battery
life or if the battery pack temperature is
low (0°C or less). In this case, charge the
battery pack or place the battery pack in
a warm location for at least one hour to
allow it to warm up before use.
Depending on the load, the tool may
switch back and forth between HIGH and
LOW speed operation multiple times. If
this switching is undesirable, set the tool
to HIGH or LOW speed manually.
CAUTION:
Check the speed selector switch
before use.
Use at low speed when high torque
is needed during operation. (Using
at high speed when high torque
is re quir e d m a y c ause a moto r
breakdown.)
Do not operate the speed selector
switch (LOW-HIGH) while pulling on
the speed control trigger. This can
cause the rechargeable battery to
wear quickly or damage the internal
mechanism of the motor.
* See specifications for “MAXIMUM
RECOMMENDED CAPACITIES”.
CAUTION:
To prevent excessive temperature
increase of the tool surface, do not
operate the tool continuously using
two or more battery packs. The tool
needs cool-off time before switching
to another pack.
Do not close up vent holes on the
sides of the body during operation.
Otherwise, the machine function is
adversely affected to cause a failure.
Do NOT strain the tool (motor). This
may cause damage to the unit.
Use the tool in such a way as to
prevent the air from the body vent
holes from blowing directly onto your
skin. Otherwise, you may get burned.
Bit-locking Function
1. With the trigger switch not engaged
and a screwdriver bit locked in
place, the tool can be used as a
manual screwdriver (up to 22.6 N·m,
230 kgf-cm, 199 in-lbs).
There will be a little play in the chuck,
but this is not a malfunction.
2. This feature is handy for tightening
screws that require more torque than
the maximum torque of the driver
(position
on the clutch), for conrming
the tightness of a screw or to loosen an
extremely tight screw.
