ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out any
work on the tool.
Selecting correct socket
Always use the correct size socket for bolts and nuts. An
incorrect size socket will result in inaccurate and
inconsistent fastening torque and/or damage to the bolt or
nut.
Installing or removing socket (Fig. 6)
To install the socket, push it onto the anvil of the tool until
it locks into place.
To remove the socket, simply pull it off.
Hook (Accessory)
CAUTION:
• When installing the hook, tighten the screw firmly.
Failure to do so may cause the breakage of the tool or
personal injury. (Fig. 7)
The hook is convenient for temporarily hanging the tool.
This can be installed on either side of the tool.
To install the hook, insert it into a groove in the tool
housing on either side and then secure it with a screw.
To remove, loosen the screw and then take it out.
Adjusting the angle head
The angle head can be adjusted 360° (8 positions in 45-
degree increments). To adjust it, loosen the hex bolt and
remove the angle head.
Adjust the angle head to the desired position and reinstall
it so that the teeth on the housing will match up with the
grooves in the angle head. Then tighten the hex bolt to
secure the angle head. (Fig. 8 & 9)
Straight head and ratchet head
(Accessory)
Straight heads and ratchet heads are available as
optional accessories for various applications on the job.
(Fig. 10 & 11)
OPERATION
CAUTION:
• Always insert the battery cartridge all the way until it
locks in place. If you can see the red part on the upper
side of the button, it is not locked completely.
Insert it fully until the red part cannot be seen. If not, it
may accidentally fall out of the tool, causing injury to
you or someone around you.
Hold the tool firmly and place the socket over the bolt or
nut. Turn the tool on and fasten for the proper fastening
time. (Fig. 12)
The proper fastening torque may differ depending upon
the kind or size of the bolt, the material of the workpiece to
be fastened, etc. The relation between fastening torque
and fastening time is shown in the figures. (Fig. 13 & 14)
NOTE:
• Hold the tool pointed straight at the bolt or nut.
6
• Excessive fastening torque may damage the bolt/nut or
socket. Before starting your job, always perform a test
operation to determine the proper fastening time for
your bolt or nut.
• If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for
15 minutes before proceeding with a fresh battery.
The fastening torque is affected by a wide variety of
factors including the following. After fastening, always
check the torque with a torque wrench.
1. When the battery cartridge is discharged almost
completely, voltage will drop and the fastening torque
will be reduced.
2. Driver bit or socket bit
• Failure to use the correct size driver bit or socket bit
will cause a reduction in the fastening torque.
• A worn socket (wear on the hex end or square end)
will cause a reduction in the fastening torque.
3. Bolt
• Even though the torque coefficient and the class of
bolt are the same, the proper fastening torque will
differ according to the diameter of bolt.
• Even though the diameters of bolts are the same,
the proper fastening torque will differ according to
the torque coefficient, the class of bolt and the bolt
length.
4. The use of the universal joint or the extension bar
somewhat reduces the fastening force of the impact
wrench. Compensate by fastening for a longer period
of time.
5. The manner of holding the tool or the material of
driving position to be fastened will affect the torque.
6. Operating the tool at low speed will cause a reduction
in the fastening torque.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Sockets
• Extension bar
• Universal joint
• Bit adapter
• Various type of Makita genuine batteries and chargers