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5
even a breakdown.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50 ﾟ C (122 ﾟ 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.
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 ﾟ C - 40 ﾟ C (50 ﾟ F - 104 ﾟ 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
1
2
3
006801
• 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
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2
3
4
008123
There are 7 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 label on
feeder box) appear to rest in the fenestella of stopper
base. See the table below for the relation between the
number indicated on the label on feeder box and the
respective screw length.
For Models BFR540, BFR550
25
30
35
40
45
50
55
25 mm
30 mm
35 mm
40 mm
45 mm
50 mm
55 mm
Number indicated on the label Screw length
008238
For Model BFR750
Number indicated on the label Screw length
45
50
55
45 mm
50 mm
55 mm
60
65
70
75
60 mm
65 mm
70 mm
75 mm
008241
1. Lever
2. Stopper base
3. Label on feeder
box
4. Fenestella
1. Red part
2. Button
3. Battery cartridge