Precautions In Handling - Hitachi W 4YD Technical Data And Service Manual

7-3. Precautions in handling

7-3-1. Use of the specified genuine bit
Use of any bit other than the one specifically designed for the Model W 4YD may lead to incomplete tightening or
improper feeding of screws. Ensure that the customers do not use any bit other than that specified.
7-3-2. Setting the collated screw strip
Instruct the customers to set the collated screw strip so that the screw on the strip is just prior (1 screw width) to
the screw-in position. Otherwise, the bit may scratch a plaster board surface (improper feeding) or the screw may
be wasted (overfeeding).
7-3-3. Adjustment of the screw-in depth
Instruct the customers to adjust the screw-in depth according to the procedure specified in the Handling
Instructions so that the screws are properly tightened without errors such as the screw head remained above the
board surface or sunk below the board surface after screw-in.
(1) Press the slider all the way in to the slider case. Then rotate the depth adjuster knob so that the bit tip
protrudes about 5 mm.
(2) Try driving a screw and make fine adjustments as needed. To make the fine adjustment, rotate towards A
(counterclockwise) if the screw head is too high after screw-in. If the screw head is too low after screw-in,
then rotate towards B (clockwise).
30û
1 screw forward
Stopper
Tip of a bit
Slider case
Depth adjuster knob
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