Functional Description; Operation - Makita BFR440 Instruction Manual

2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room tempera-
ture at 10°C - 40°C (50°F - 104°F). Let a hot battery
cartridge cool down before charging it.

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before adjusting or checking
function on the tool.
Installing or removing battery cartridge
(Fig. 1)
• Always switch off the tool before insertion or removal of
the battery cartridge.
• To remove the battery cartridge, withdraw it from the
tool while sliding the button on the front of the cartridge.
• To insert the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip
it into place. Always insert it all the way until it locks in
place with a little click. 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.
• Do not use force when inserting the battery cartridge. If
the cartridge does not slide in easily, it is not being
inserted correctly.
Setting for desired screw length (Fig. 2)
There are 3 positive-lock screw length settings. To obtain
the desired setting, pull out the stopper base while
depressing the lever until you see the number of the
desired screw length (indicated on the plate) appear to
rest on the very top edge of the casing.
See the table below for the relation between the number
indicated on the plate and the respective screw length
ranges.
Number indicated
on the plate
25/28
32
41
Adjusting the driving depth (Fig. 3)
Depress the stopper base as far as it will go. While keep-
ing it in this position, turn the adjusting knob until the bit tip
projects approx. 5 mm from the stopper base. Drive a trial
screw. If the screw head projects above the driving sur-
face, turn the adjusting knob in the A direction; if the
screw head is countersunk, turn the adjusting knob in the
B direction.
Switch action (Fig. 4)
CAUTION:
• Before inserting the battery cartridge into the tool,
always check to see that the switch trigger actuates
6
Screw length range
(mm)
25 - 28
28 - 35
35 - 41
properly and returns to the "OFF" position when
released.
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
Reversing switch action (Fig. 5)
This tool has a reversing switch to change the direction of
rotation. Depress the reversing switch lever from the A
side for clockwise rotation or from the B side for counter-
clockwise rotation.
When the reversing switch lever is in the neutral position,
the switch trigger cannot be pulled.
CAUTION:
• Always check the direction of rotation before operation.
• Use the reversing switch only after the tool comes to a
complete stop. Changing the direction of rotation
before the tool stops may damage the tool.
• When not operating the tool, always set the reversing
switch lever to the neutral position.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before carrying out any work
on the tool.
Installing or removing the bit
Loosen the thumb screws which secure the casing. Pull
out the casing in the direction of the arrow. (Fig. 6)
Press the dust cover toward the plane bearing and pull
out the bit. If the dust cover cannot be moved as far as the
plane bearing, try it again after turning the bit slightly.
To install the bit, insert it into the socket while turning it
slightly. After installing, always make sure that the bit is
securely held in place by trying to pull it out. (Fig. 7)
Installing screw strip (Fig. 8 & 9)
Insert the screw strip through the screw guide. Then insert
it through the feeder box until the first screw reaches the
position next to the driving position.
Removing screw strip
To remove the screw strip, just pull it out in the direction of
the arrow. (Fig. 10)
If you depress the reverse button, you can pull out the
screw strip in the reverse direction of the arrow. (Fig. 11)
Carry hook (Fig. 12)
The carry hook is convenient for temporarily hooking the
tool. It can be installed on either side of the tool.
When removing the carry hook, widen it by pressing its
right ends ON BOTH SIDES in the directions of arrow (1)
and raise it in the direction of the arrow (2).

OPERATION

Driving operation (Fig. 13)
Switch on the tool by pulling the switch trigger. Hold the
tool squarely and firmly up against the driving surface. A