4
5
Functional Description
1
2
4
5
3
ASSEMBLY
WARNING
Recharge only with the char-
ger specifi ed for the battery. For specifi c charg-
ing instructions, read the operator’s manual
supplied with your charger and battery.
WARNING
Always remove battery
pack before changing or removing acces-
sories. Only use accessories specifically
recommended for this tool. Others may be
hazardous.
WARNING
Use only sockets and other
accessories specifi cally designed for use on
impact wrenches and drivers. Other sockets
and accessories might shatter or break caus-
ing injury.
OPERATION
WARNING
To reduce the risk of injury,
wear safety goggles or glasses with side
shields.
WARNING
Always remove battery
pack before changing or removing acces-
sories. Only use accessories specifically
recommended for this tool. Others may be
hazardous.
6
Cat. No. 0883-20
Cat. No. 0881-20
1. Drive Shank
2. Forward/reverse switch
3. Trigger
4. Hex drive chuck
5. 1/2" square drive shank
6. LED
Removing Battery Pack from Tool
Push in the release buttons and remove the bat-
tery pack.
Inserting Battery Pack into Tool
Battery pack can be inserted into the tool in two
ways.
1. For working in restricted spaces.
Insert the battery pack from the front by pressing
in the release buttons and sliding battery pack
into the body of the tool. Insert the battery pack
until clamp engages.
2. For optimum weight distribution and balance.
Insert the battery pack from the back by press-
ing in the release buttons and sliding the battery
pack into the body of the tool. Insert the battery
pack until clamp engages.
Attaching and Removing Accessories
Cat. No. 0883-20
These impact wrenches are intended only for use
with sockets designed for impact wrenches that
have a 1/2" square drive. Other sockets could
shatter or break, causing injury.
1. To attach a socket or other accessory, align the
accessory with the drive shank and push it fi rmly
over the retaining ring.
2. To remove the accessory, pull the accessory off
the drive shank.
Cat. No. 0881-20
This impact driver is intended for use with drill and
driver bits.
1. To attach an accessory, pull the ring out and
insert the accessory shank. Release the ring. It
may be necessary to pull the bit out slightly to
engage the holding mechanism.
2. To remove the accessory, pull out the ring and
remove the accessory. Release the ring.
Using the Forward/Reverse Switch
The forward/reverse switch may be set to three po-
sitions: forward, reverse and lock. Due to a lockout
mechanism, the forward/reverse switch can only be
adjusted when the trigger is not pressed. Always
allow the motor to come to a complete stop before
using the forward/reverse switch.
1. For
forward
(clockwise) rotation, push the
forward/reverse switch in the direction shown.
Check the direction of rotation before use.
2. For
reverse
(counterclockwise) rotation, push
the forward/reverse switch in the direction
shown. Check the direction of rotation before
use.
3. To lock the trigger, push the forward/reverse
switch to the center position. The trigger will
not work when the forward/reverse switch is in
the locked position. Always remove the battery
pack before performing maintenance, chang-
ing accessories, storing the tool and any time
the tool is not in use.
Forward
Reverse
Fig. 2
Starting, Stopping and Controlling Speed
These tools may be operated at any speed from
0 to full speed.
1. To
start
the tool, pull the trigger.
NOTE: An LED is turned on when the trigger
is pulled.
2. To vary the driving speed, simply increase or
decrease pressure on the trigger. The further
the trigger is pulled, the greater the speed.
3. To
stop
the tool, release the trigger and the
electric brake stops the tool instantly.
Impacting Techniques
The longer a bolt, screw, or nut is impacted, the
tighter it will become. To help prevent damaging the
fasteners or workpieces, avoid excessive impact-
ing. Be particularly careful when impacting smaller
fasteners because they require less impacting to
reach optimum torque.
Practice with various fasteners, noting the length
of time required to reach the desired torque. Check
the tightness with a hand-torque wrench. If the
fasteners are too tight, reduce the impacting time.
If they are not tight enough, increase the impact-
ing time.
Impacting for two seconds is generally suffi cient for
a 3/8" bolt and one second for a 5/16" bolt. How-
ever, oil, dirt, rust or other matter on the threads or
under the head of the fastener affects the degree
of tightness.
The torque required to loosen a fastener averages
75% to 80% of the tightening torque, depending on
the condition of the contacting surfaces.
On light gasket jobs, run each fastener down to a
relatively light torque and use a hand torque wrench
for fi nal tightening.
Fig. 1
