Operation; Maintenance - Makita BFT022F Instruction Manual

Adjusting the fastening torque
Fig.7
When you wish to drive machine screws, wood screws,
hex bolts, etc. with the predetermined torque, adjusting
the fastening torque as follows.
1. First remove the battery cartridge from the tool.
2. Loosen and remove the screw that secures ring.
3. Rotate the ring in the front of the tool by hand so
that a hole can be seen below the ring.
4. Place the battery cartridge in place and pull the
switch trigger. Release it so that the adjusting ring
rotates and becomes visible in the hole. And then
remove the battery cartridge.
Fig.8
5. Use an optional adjusting grip to adjust the
fastening torque. Insert the pin of the adjusting
grip into the hole in the front of the tool. And then,
turn the adjusting grip clockwise to set a greater
fastening torque, and counterclockwise to set a
smaller fastening torque.
6. Align the yellow line with your desired number on
the fastening torque scale.
7. Insert the battery cartridge and be sure that a
fastening torque has been set up by using a
fastening torque tester.
8. Rotate the ring in front of the tool and then tighten
the screw to secure the ring.
NOTE:
Numbers on the fastening torque scale is a
•
guideline to set up your desired fastening torque.
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.
Installing or removing driver bit or socket bit
Fig.9
Use only the driver bit or socket bit shown in the figure.
Do not use any other driver bit or socket bit.
To install the bit, pull the sleeve in the direction of the
arrow and insert the bit into the sleeve as far as it will go.
Then release the sleeve to secure the bit.
Fig.10
To remove the bit, pull the sleeve in the direction of the
arrow and pull the bit out firmly.
NOTE:
If the bit is not inserted deep enough into the
•
sleeve, the sleeve will not return to its original
position and the bit will not be secured. In this case,
try re-inserting the bit according to the instructions
above.

OPERATION

Screwdriving operation
Fig.11
Place the point of the driver bit in the screw head and
apply pressure to the tool. Then switch the tool on.
When the clutch cuts in, the motor will stop automatically.
Then release the switch trigger.
NOTE:
Make sure that the driver bit is inserted straight in
•
the screw head, or the screw and/or bit may be
damaged.
Limits of fastening capacity
Use the tool within the range of the revolution angle up
to 360 ﾟ. If you use the tool beyond the upper limit of this
range, the clutch does not work. And the tool cannot
deliver enough fastening torque (LED indicator flickers in
red and green alternatively).
NOTE:
The revolution angle means the angle which a
•
screw/bolt revolves when the tool attains to 100%
from 50% of desired torque.
Use of a low temperature conditioned battery
•
cartridge may sometimes give warning for battery
cartridge capacity by warning lamp and beeper
which makes the tool stop immediately. In this case,
the fastening capacity may be inferior to the
specification on this manual even if a charged
battery cartridge is used.

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.
Replacing carbon brushes
Fig.12
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Fig.13
Use a screwdriver to remove the brush holder caps.
Take out the worn carbon brushes, insert the new ones
and secure the brush holder caps.
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.
7