Makita BTW200 Instruction Manual page 14

Hold
the tool firmly and place the socket over the bolt or nut Turn the tool on and fasten
for the proper fastening time
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
When operating overhead, always make sure the battery cartridge is locked securely so
that it will not be fallen out of the tool If not,
it
may accidentally fall out of the tool, caus-
ing injury to you or someone around you
Hold the tool pointed straight a t the bolt or nut without applying excessive pressure on
the tool
Excessive fastening torque may damage the bolt or nut Before starting your job, always
perform a test operation to verify the adequate fastening speed and time for your bolt or
nut
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
2. Socket
fastening torque will be reduced.
*
Failure to use the correct size socket 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
*
Even though the diameters of bolts are the same, the proper fastening torque will
4. The use of universal joint or the extension bar somewhat reduces the fastening force
5. The type of materials to be fastened, the manner of holding the tool and the tool speed
CAUTION:
If the tool is operated continuously until the battery cartridge has discharge, allow the tool
to rest for 15 minutes before proceeding with a fresh battery.
fastening torque will differ according to the diameter of the bolt.
differ according to the torque coefficient, the class of bolt and the bolt length.
of the impact wrench. Compensate by fastening for
a
longer period of time.
will affect the torque.
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