Skil PWRCore 20 Owner's Manual page 16

Tighten and Loosen Nuts and
Bolts
Variable-speed control must be used with
caution for driving nuts and bolts using socket-
set attachments. The best technique is to start
slowly, increase speed as the nut or bolt runs
down, and then 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 hand when the nut or
bolt seats.
a. Install a suitable bit.
b. Apply just enough pressure to keep the bit
engaged on the screw or nut.
c. Apply minimal pressure to the variable-speed trigger switch initially. Increase the speed only
when full control can be maintained.
NOTICE:
a. Always use the correct type and size of bit for your application.
b. When turning in a screw at/near the cross cut end or an edge of wood, pre-drill a hole in
order to avoid cracking of the wood.
c. When screw driving in hard wood, one should pre-drill a hole.
WARNING
avoid damaging the fastener head.
16
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
Fig. 9