Skil PWRCORE 12 IW6744A-00 Guide D'utilisation page 17

Tightening and Loosening Nuts
and Bolts
To tighten 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. Select hex socket that matches the nut or
bolt. Then mount the socket onto the square
drive, and fully grip the nut or bolt to be
tightened with the hex socket.
b. Hold the tool firmly and apply just enough pressure to keep the socket engaged on the nut
or bolt. Then press the trigger switch to impact the nut or bolt for several seconds.
NOTICE: Always use the correct size impact socket for bolts and nuts. An incorrect size
impact socket will result in inaccurate and inconsistent fastening torque and/or damage to the
bolt or nut.
WARNING
of the bolt or nut will be damaged.
To loosen nuts and bolts
Use low-speed, medium-speed, high-speed or control mode to loosen nuts and bolts
depending on the application. When working above ground or working on care tires, to prevent
the loosened fasteners from falling to the ground or into a tight space, it is recommended to
use the control mode to do this job.
a. Select hex socket that matches the nut or bolt. Then mount the socket onto the square
drive, and fully grip the nut or bolt to be loosened with the hex socket.
b. Hold the tool firmly and apply just enough pressure to keep the socket engaged on the nut
or bolt.
c. Depress the variable-speed trigger switch to impact the nut or bolt. In control mode, once
the fastener is fully loose, the tool will stop running. This tool also allows you to continue to
depress the trigger switch for removing the nut from the long bolt, if necessary.
Do not over-tighten, as the force of the impact wrench can break the
fastener. Hold the tool vertical with the bolt or nut, otherwise the head
Fig. 10
17