15
Tighten and Loosen Nuts and Bolts
Variable-speed control must be used with
caution when driving nuts and bolts with
socket-set attachments. The best technique is
to start slowly and increase speed as the nut
or bolt runs down. Set the nut or bolt snugly by
slowing the tool to a stop. If this procedure is
not followed, the tool will have a tendency to
torque or twist in your hands when the nut or
bolt seats.
a. Install a suitable bit.
NOTICE: Always use the correct type and size
of bit for your application.
b. Apply just enough pressure to keep the bit
engaged on the screw or nut.
c. Apply minimal pressure to the trigger switch
initially. Increase the speed only when full
control can be maintained.
NOTICE: Do not over-tighten, as the force of the impact driver can break the fastener. Keep
the impact driver at a right angle to the fastener to avoid damaging the fastener head.
Fig. 9
