Functional Description - Makita BFS440 Instruction Manual

6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50°C (122°F).
7. Do not incinerate the battery cartridge even if it is
severely damaged or is completely worn out. The
battery cartridge can explode in a fire.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
SAVE THESE INSTRUCTIONS.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely
discharged.
Always stop tool operation and charge the battery
cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room
temperature 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
battery 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.
Switch action (Fig. 2)
CAUTION:
• Before inserting the battery cartridge into the tool,
always check to see that the switch trigger actuates
properly and returns to the "OFF" position when
released.
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
Lighting up the front lamp (Fig. 3)
CAUTION:
• Do not look in the light or see the source of light
directly.
Pull the switch trigger to light up the lamp. The lamp
keeps on lighting while the switch trigger is being pulled.
6
The lamp goes out 10 -15 seconds after releasing the
trigger.
NOTE:
• Use a dry cloth to wipe the dirt off the lens of lamp. Be
careful not to scratch the lens of lamp, or it may lower
the illumination.
Reversing switch action (Fig. 4)
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
counterclockwise 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.
Depth adjustment (Fig. 5)
The depth can be adjusted by turning the locator. Turn it
in "B" direction for less depth and in "A" direction for more
depth. One full turn of the locator equals 1.5 mm change
in depth.
Adjust the locator so that the distance between the tip of
the locator and the screw head is approximately 1 mm as
shown in the figures. Drive a trial screw into your material
or a piece of duplicate material. If the depth is still not
suitable for the screw, continue adjusting until you obtain
the proper depth setting. (Fig. 6 & 7)
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 the bit
To remove the bit, pull the locator. Then grasp the bit with
a pair of pliers and pull the bit out of the magnetic bit
holder. Sometimes, it helps to wiggle the bit with the pliers
as you pull. (Fig. 8)
To install the bit, push it firmly into the magnetic bit holder.
Then install the locator by pushing it firmly back. (Fig. 9)
Bit storage (Fig. 10)
Fit the bit into the protrusion at the tool.
Carry hook
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). (Fig. 11)