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Attaching a bit
While attaching or de-
taching a bit, turn off the
power switch or pull out
the driver cord from the
driver to disconnect the
power.
l BLG-4000
For BLG-4000, pull-down the
"Joint-shaft collar" towards the
body case of it and insert the bit.
l BLG-5000
For BLG-5000, pull-up the "Joint-shaft collar" and insert
the bit.
l Check that the bit is fixed firmly.
l Use genuine parts for Hios Shank H4 ( ∅ 4) or H5 ( ∅ 5).
How to adjust the torque
BLG-4000 has two torque adjustment springs: for high
torque measurement, use the spring installed in the driver
(red spring), and for lower torque measurement, use the
spring attached to the driver (white spring). Use either of
the springs according to work type.
For torque setting, the "Output torque guide" can be used
as a guideline to get the rough torque value.
l The torque can be adjusted by adjusting the spring pres-
sure in the torque adjustment nut. The torque adjustment
nut can be tightened or loosened by squeezing or relax-
ing it, respectively.
How to adjust the torque
l BLG-4000
If you already know the screw tight-
ening torque value, by referring to
the guide, set the nut so that the
scale line comes just above the de-
sired torque value scale (1 to 8).
Insert bit
Torque adjustment nut
can be turned and moved
manually with this ring
- 6 -
Insert joint
shaft col-
lar in the
driver for
BLG-4000
８
６
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