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T ECHNICAL INFORMATION
Models No. BFL081F
NEW TOOL
P 1 / 17

Description Cordless Angle Screwdriver 12V L
H
CONCEPT AND MAIN APPLICATIONS
BFL081F is sister cordless angle screwdriver to model BFL080F,
featuring higher rotational speed than the predecessor while having W
the same torque range and the following features.
* Soft start
* Delayed re-starter Dimensions : mm ( " )
* LED Job light with battery BH1220 BH1220C BH1233 BH1233C
* Indication lamp for telling Length ( L ) 430 (17) 413 (16-1/4) 454 (17-7/8) 421 (16-5/8)
the fastening result
Width ( W ) 71 (2-13/16) 74 (2-15/16) 71 (2-13/16) 74 (2-15/16)
Height ( H ) 92 (3-5/8) 92 (3-5/8) 92 (3-5/8) 107 (4-1/4)

The variations of this model are as listed below.
Model No. Driving shank Charger Battery
BFL081FZ 9.5mm (3/8") square No No
BFL081F5Z 6.35mm (1/4") square No No

Specification
Type of cell Ni - MH
Battery Voltage : V 12
2.0 Ah w/ BH1220, BH1220C
Capacity
3.3 Ah w/ BH1233, BH1233C
No load speed : min -1 = rpm 700
Fastening Soft joint 2 - 7.5 (17.7 - 66.4)
torque : N.m (in.lbs) Hard joint 2 - 8 (17.7 - 70.8)
Electric brake Yes
Torque adjustment Yes (Torque adjust tool is required.)
Soft starter Yes
Reverse switch Yes
Net with battery BH1220 1.7 (3.7)
weight: with battery BH1233 2.0 (4.4)
kg (lbs) with battery BH1220C 1.6 (3.5)
with battery BH1233C 1.9 (4.2)

Standard equipment
* Torque adjust tool ........................ 1 pc. (exclusively for some country)
* Protector ...................................... 1 pc. (exclusively for some country)

< Note > The standard equipment for the tool shown may differ from country to country.

Optional accessories
* Battery BH1220, 12V 2.0Ah * Charger DC24SA * Protector (clear red)
* Battery BH1220C, 12V 2.0Ah * Charger DC14SA * Protector (clear blue)
* Battery BH1233, 12V 3.3Ah * Auto refresh adapter ADP03 * Protector (clear yellow)
* Battery BH1233C, 12V 3.3Ah * Angle head set * Protector (clear)
* Torque adjust tool
P 2 / 17
Features and benefits

*High rotational speed: 700 min.-1 Indication Lamp and Beeper
( No load speed) inform user of;
* Sufficient fastening = Green on
* Insufficient fastening = Red on
and Beeping
*Higher Torque Accuracy * Warning that remaining battery
Torque accuracy: power is little = Red on
Plus or minus 10%, and Beeping
Cm is more than or equal to 1.67 * Too little power to operate
the machine = Motor stops with Red on
and Beeping

Torque adjusting system D28 Type Motor
just for the manufacturing line
Externally accessible brushes
Impossible to change fastening torque
Two-piece motor with replace-
originally set by factory, without
able armature
torque adjust tool.
Uses compact and light, yet
powerful rare earth magnet
Extra-rigid, Aluminum-alloy
Angle Head

Head height:
28.5mm (1- 1/8")

Anti-Slip Dimpled Grip

Trigger switch provides one second start-delay between
Center height: fastening cycles to prevent overtightening
13.5mm (1/2")
Auto Stop System
*Conveniently Located By sensing battery's
Forward / Reverse Push Button power drop.

Built in Electronic System featuring

Soft start to suppress Delayed re-starter
return torque The restarting delayer controls the motor
Built-in at start-ups so that it does not start without passing one second
Job Light after finishing single tightening work, even if switch
trigger is pulled.
Lighting up automatically
when motor starts, and Consequently, reduced considerably deviation
turns off within 10 sec. after from pre-set fastening torque , which is caused
switching off. by unintentional over-tightening.

Batteries with new charging system
Protector (option)
Protects workpiece from scratches. 2.0Ah Battery BH1220
2.0Ah Battery BH1220C
Uses Machine Screws for 3.3Ah Battery BH1233
Assembling Motor Housing 3.3Ah Battery BH1233C
P 3 / 17
Lists of the Electronic Functions and Reminders
1. When a screw has been driven completely at preset torque, or when there is no trouble in the machine;

Electronic Reminders
When Function What LED Indicator Lamp and
Function LED Indicator Beeping Alarm Buzzer Remind the User
Lamp of Buzzer Works

Turns on first To ensure that LED indication lamp and alarm
Checking LED Rapid Just after the
in green, then buzzer works normally; if there is no trouble in
Lamp and Alarm succession of battery is installed
in red and fi- electronic parts, each reminder turns on and beeps
Buzzer on the machine.
nally in white. short beeps as described to the left columns.
To ensure that a screw has been driven completely
When a screw has at preset torque. The auto fastening stop system
been fastened helps the user avoid overtightening.
Auto Fastening Turns on For approximate one second after auto fastening
completely at
Stop & Delayed No beeping
in green. preset torque and stop system works, the tool does not start even if
Restart the trigger switch is pulled as long as the lamp is
the clutch is
released. on in green. The delayed restart system helps the
user avoid accidental overtightening which will be
caused by fault operation of trigger switch.

2. When a screw has not been driven completely at preset torque, or when there is some trouble in the machine;

Electronic Reminders
What LED Indicator Lamp and
Function LED Indicator Beeping Corrective Action to Take
Alarm Buzzer Remind the User
Lamp of Buzzer
Incomplete tightening has been Tighten the screw once again.
Warning Against
Turns on performed, because the trigger switch It is important to keep on
Incomplete A long beep
in red. has been released before the fastening pulling the trigger switch till
Tightening
torque reaches preset one. the clutch is released.
Although the motor will run,
Slow It is appropriate time to replace the it is recommended to replace
Battery Power Blinks slowly
repetition of battery with full-charged one because the battery by full-charged one.
Reminder in red.
long beeps the battery power is getting low. The reminders turn off when
battery voltage recovers.
Replace the battery with full-
charged one to avoid incomplete
Auto Battery Turns on There is not battery power enough
A long beep tightening.
Shut-off in red. to tighten a screw at preset torque.
The reminders turn off when
the battery cartridge is removed.
Replace the battery with full-
Abnormal drop in battery voltage
Blinks in red charged one to avoid incomplete
Anti-Resetting Repetition of has been caused for some reason.
and green tightening.
of Controller long beeps The motor does not start even if the
alternately. The reminders turn off when
trigger switch is pulled.
the battery cartridge is removed.
Immediately remove the battery,
Warning Against Quick The controller is overheated.
Blinks in red Repetition of The motor does not start even if the and cool down the machine.
Overheated
quickly. The reminders turn off when the
Controller short beeps trigger switch is pulled.
machine temperature gets low.
Some trouble has occurred in clutch
Warning Against Blinks in red system, keeping the micro switch Ask Makita Authorized or Fac-
Repetition of turned on.
Abnormal Clutch and green tory Service Center for repairs
long beeps The motor does not start even if the
Work alternately. or adjustment.
trigger switch is pulled.
Warning Against Blinks in red Repetition of The battery cartridge has been Release the trigger switch.
Fault Position of and green long beeps installed on the machine with the The reminders turn off when
Trigger Switch alternately. trigger switch being pulled to the the trigger switch is released.
(when installing "On" position. This function helps the user
the battery on the avoid accidental start-ups when
machine) installing the battery cartridge
on the machine.
P 4 / 17

Comparison of products

Makita Competitor A
Model No.
Specifications BFL081F BFL080F A B
Type of cell Ni-MH Pneumatic Pneumatic
Battery Voltage ; V 12 9.6
Capacity : Ah 2.0 / 3.3
No load speed : min -1=rpm. 700 450 1,100 700

Fastening Soft joint 2 - 7.5 2.5 - 7 3.5 - 7
torque range : N.m
Hard joint 2-8
Auto stop sensing
Yes No No
the remaining battery power
Built in job light Yes No No
Soft start feature Yes No No
Indication lamp for checking
fastening performance Yes No No

Length : mm ( " ) 430 (17)
with Width : mm ( " ) 71 (2-13/16)
Battery BH1220
Height : mm ( " ) 92 (3-5/8)
Length : mm ( " ) 413 (16-1/4)
with
Width : mm ( " )
Battery BH1220C 74 (2-15/16)
Height : mm ( " ) 92 (3-5/8)
Length : mm ( " ) 454 (17-7/8) Overall Overall
with length : length :
Dimensions

Battery BH1233 Width : mm ( " ) 71 (2-13/16)
334 290
Height : mm ( " ) 92 (3-5/8)
(13-1/8) (11-3/8)
Length : mm ( " ) 421 (16-5/8)
with
Battery BH1233C Width : mm ( " ) 74 (2-15/16)
Height : mm ( " ) 107 (4-1/4)
Length : mm ( " ) 430 (17)
with
Battery BH9020 / A Width : mm ( " ) 74 (2-15/16)
Height : mm ( " ) 65 (2-9/16)
Length : mm ( " ) 454 (17-7/8)
with
Battery BH9033 / A Width : mm ( " ) 74 (2-15/16)
Height : mm ( " ) 65 (2-9/16)
Battery BH1220 1.7 (3.7)
Battery BH1233 2.0 (4.4)
1.5 - 1.7 1.4 - 1.5
Weight : kg (lbs) Battery BH1220C 1.6 (3.5)
(3.3 - 3.8) (3.1 - 3.3)
including Battery BH1233C 1.9 (4.2)
Battery BH9020 / A 1.7 (3.8)
Battery BH9033 / A 2.0 (4.4)
P 5 / 17
Repair
< 1 > Lubrication
Apply the grease to protect parts and product from unusual abrasion. See the list below and Fig. 1.

The parts to be lubricated with MAKITA grease N. No.2 Amount to be applied
Spindle complete Apply to the bevel gear portion.
O ring 14 Apply to the whole portion.
Carrier complete Apply to the shafts for accepting spur gears 13.
Spur gear 13 Apply to the whole portion.
approx. 4.1 g in total
Apply to the shafts for accepting spur gears 18
Spur gear 20 complete
and pinion gear portion.
Spur gear 18 Apply to the whole portion.
Internal gear 47 Apply to the teeth portion for engaging spur gears 18.
Armature Apply to the gear portion for engaging spur gears 18.

The parts to be lubricated with seal grease Amount to be applied
Spindle Apply to the threaded portion.
Steel ball 5.0 Apply to the whole portion. approx. 0.7 g in total
Steel ball 4.0 Apply to the whole portion.
Steel ball 3.0 Apply to the whole portion.

The parts to which adhesive "Lock Tight 603" is applied
for prevention against loosening
Bearing retainer 14-23 Apply to the threaded portion.
Torx counter sunk head screw M5x10 Apply to the threaded portion.

Fig. 1

Steel ball 5.0 Steel ball 4.0
Steel ball 3.0

Spindle
Torx counter sunk
Spindle complete head screw M5x10
O ring 14

Bearing retainer 14-23

Spur gear 13 Spur gear 18

Spur gear 20 complete Armature
Carrier complete Internal gear 47
P 6 / 17
Repair
< 2 > Disassembling the LED light section
1. After removing 2 pcs. of pan head screw M4x8, remove light cover. See Fig. 2.
2. Take out LED circuit and disconnect the connector of LED circuit. See Fig. 2.

< 3 > Reassembling the LED light section
1. Hold the lead wires with lead holders. See Fig. 2.
2. Mount light cover by inserting the tab of light cover into the cut of housing. And fasten light cover with
pan head screw M4x8. See Fig. 2.

Fig. 2

Pan head
screw M4x8 Tab
Light cover

Housing
Put the connectors and
extra of LED lead wires Light holder
into the space for the LED
circuit.

LED circuit

Connector

Hold the lead wires with lead holders

< 4 > Removing bearing retainer 14-23
1. For removing bearing retainer 14-23 from angle head, turn it clockwise with wrench. See Fig. 3.
< Note > Adhesive "Lock Tight 603" is applied to the threaded portion of bearing retainer 14-23.
Powerfully turn the bearing retrainer .
2. Press down bearing retainer 14-23 for removing it from spindle complete. See Fig. 3.
Fig. 3

24mm

Bearing retainer 14-23 Spindle complete

Angle head For removing, turn bearing
retainer 14-23 with wrench
clockwise.
P 7 / 17
Repair
< 5 > Remounting bearing retainer 14-23
1. Apply MAKITA grease N No.2 to O ring 14. Mount flat washer 14, the O ring 14 and bearing retainer 14-23
to spindle complete. See Fig. 4
2. Apply MAKITA grease N No.2 to the gear room of angle head.
Pay attention, not to apply the grease to the threaded portion of angle head to which bearing retainer 14-23
is mounted.
3. Apply adhesive, "Lock Tight 603" to the threaded portion of bearing retainer 14-23.
Mount flat washer 6 to the gear room of angle head. See Fig. 4.
Mount the bearing retainer 14-23 assembled in Fig. 4, by turning it counter clockwise. See Fig. 4.
The fastening torque for bearing retainer 14-23 is 20 - 40 N.m.

Fig. 4

1R219
Spindle complete Torque wrench

Flat washer 14 Mount them to
O ring 14 spindle complete.
Spindle
Before mounting, apply MAKITA complete
grease N No.2 to O ring 14
1R220
Bearing
Ratchet head
Apply adhesive, "Lock Tight 603" retainer 14-23
Bearing to the threaded portion. 1R222
retainer 14-23 Flat washer 6 Socket adapter
Apply 2 g of MAKITA grease N No. 2.
134841-3
Socket 24-45

Do not apply the grease to the
threaded portion to which bearing
Angle head retainer 14-23 is mounted. Angle head

< 6 > Removing spiral bevel gear 9
1. Remove light cover as illustrated in Fig. 2. And remove switch lever and compression spring 2. See Fig. 5.
2. After removing 4 pcs. of pan head screw M4x22, separate angle head complete from housing. See Fig. 5.
Fig. 5

Switch lever
Compression spring 2

Switch unit

Angle head complete

Pan head Housing
screw M4x22

Compression
spring 5
Be careful, not to lose
compression spring 5.
P 8 / 17
Repair
3. Remove retaining ring R-22 for securing ball bearing 6900LLB, with No. 1R291 "Retaining Ring S and R
Plier". See Fig. 6.
4. Knock the edge of angle head complete with plastic hammer, Then, spiral bevel gear 9 section can be removed
from angle head complete. See Fig. 6.
Fig. 6

Retaining ring R-22
Spiral bevel
gear 9 section

Angle head complete
1R291
Retaining Ring S and R Plier

5. Remove retaining ring S-10 and then, remove ball bearing 6900LLB as illustrated in Fig. 7.
6. Now spacer and needle baring 1210 can be removed from spiral bevel gear 9. See Fig. 7.

Fig. 7
1R291
Retaining Ring S and R Plier
Ball bearing 6900LLB Spiral bevel gear 9

Needle bearing 1210

Retaining ring S-10 Spacer
1R269
Bearing extractor

< 7 > Remounting spiral bevel gear 9
1. Mount needle bearing 1210 and spacer to spiral bevel gear 9. Refer to Fig. 7.
< Note >
Pay attention to the mounting direction of spacer. See Fig. 8.
2. Mount ball bearing 6900LLB with arbor press. See Fig. 9.
Fig. 8 Fig. 9

Ball bearing
6900LLB

Spacer

1R034
Bearing setting plate 12.2
P 9 / 17
Repair
3. Mount retaining ring S-10 to secure ball bearing 6900LLB. Refer to Fig. 7. Now spiral bevel gear 9 section
has been completed.
4. Mount the assembled spiral bevel gear 9 section to angle head, and secure it with retaining ring R-22.
Refer to Fig. 6.

< 8 > Disassembling clutch assembly
It is recommended to replace them as a "Clutch Assembly". However, clutch assembly can be replaced as a
single part as illustrated in Fig. 10, 11 and 12.
1. Remove angle head complete. See Fig. 5. And then, remove clutch assembly. See Fig. 10.
2. Insert torque adjust grip into the hole of adjust ring complete and turn the torque adjust grip counter clockwise,
until the pressure of compression spring 19 on adjust ring complete and lock nut M12 gets week. See Fig. 10.
Now lock nut M12 can be removed by turning it clockwise by hand. See Fig. 10.
3. Adjust ring complete, flat washer 18 and compression spring 19 can be removed from spindle. See Fig. 10.

Fig. 10

Clutch assembly

Lock nut M12 can be removed Adjust ring
by turning it clockwise by hand complete
in this step.
Lock nut M12 Flat washer 18
Adjust ring
complete

Compression
spring 19
Spindle
Hole of adjust ring Torque adjust tool

4. Pull down cam D toward the threaded portion of spindle, while holding cam C in the original position.
Now steel ball 5.0 (3 pcs.) and steel ball 4.0 (3 pcs.) can be removed as illustrated in Fig. 11.
5. Pull down cam C toward the threaded portion of spindle, while holding flat washer 7 in the original position.
Now steel ball 3.0 (13 pcs.) can be removed as illustrated in Fig. 12.

Fig. 11 Fig. 12

Flat washer 7
Steel ball 4.0 (3 pcs.) Steel ball 3.0 (13 pcs.)
Cam C

Cam C
Cam D
Steel ball 5.0 (3 pcs.)

Threaded portion Threaded portion
of spindle of spindle
P 10 / 17
Repair
< 9 > Reassembling clutch assembly
1. Apply seal grease to steel ball 5.0, 4.0 and 3.0, before mounting.
2. Mount the above steel balls with referring to Fig. 11 and 12.
3. Apply seal grease to the threaded portion of spindle. And mount compression spring 19, flat washer 18, adjust ring
complete. Mount lock nut M12 by turning it with torque adjust tool counter clockwise.
Refer to Fig. 10.
< 10 > Disassembling gear case section
1. Remove carbon brushes.
2. Remove light cover, switch lever, compression spring 2 and angle head complete
as illustrated in Fig. 2 and Fig. 5.
3. Remove 6 pcs. of pan head screw M3x22. Housing L can be separated from housing R. See Fig. 13.
Fig. 13
Housing R

Housing L

Light holder

Carbon brush

Brush holder cap Pan head
screw M3x22

4. Remove switch unit from gear case, and pull off motor (yoke) with gear case from endbell complete,
while lifting up them. See Fig. 14.
Fig. 14

Pull off them from
Lift up motor endbell complete.
Gear case with gear case.

Switch unit

Motor
Housing R viewing from Endbell complete
(Yoke)
switch unit side

5. Remove gear case from motor (yoke) by turning motor
bracket toward the direction disgnated with white
arrow. See Fig. 15.
Fig. 15

Gear case Motor bracket Motor (Yoke)
P 11 / 17
Repair
5. Remove lock washer from gear case by twisting it. Then, gear case section can be removed as illustrated in Fig. 16.
Fig. 16

Gear case
Internal gear 47

Spur gear 20
complete
Lock washer

Spur gears 13
(3 pcs.) which
are removed
from carrier Spur gears 18 Carrier
complete . (3 pcs.) complete
Ball bearing
6805LLB

< 11 > Reassembling gear case section
1. Referring to "< 1 > Lubrication", apply MAKITA grease N No.2 to the parts for gear case section,
before mounting.
2. Referring to Fig. 16, mount the parts for gear case section as follows.
1. Mount ball bearing 6805LLB to carrier complete, and mount the carrier complete with ball bearing 6805LLB
to gear case.
2. Mount 3 pcs. of spur gear 13 to the shafts of carrier complete respectively.
3. Mount internal gear 47
4. Mount spur gear 20 complete.
5. Mount 3 pcs. of spur gear 18 to the shafts of spur gear 20 complete respectively.
6. Mount lock washer.
Now the gear case section has been completed in this step.
3. Referring to Fig. 15, secure the gear case section to motor bracket, by twisting motor bracket clockwise.
4. Insert the ball bearing of armature's commutator end to endbell complete. Mount switch unit to gear case.
And mount the above assembled section to housing R with paying attention to the following matters.
* Face the cut of yoke to housing R. See Fig. 17.
* Face the mounted switch unit to the light cover side. See Fig. 17.
Fig. 17
Endbell complete
Motor bracket Ball bearing of
Switch unit Yoke armature's
commutator end
Gear case

Cut of yoke

Housing R viewing from
light cover side
P 12 / 17

Repair
5. Insert plate and lens into the mounting slit of housing R respectively. See Fig.18.
Secure housing L with 6 pcs. of pan head screw M3x20. See Fig.18.

Fig. 18

Light holder
Plate

Housing R

Lens
Housing L

Pan head
screw M3x20

< 12 > Disassembling Switch
1. Remove screw for securing micro switch. See Fig. 19.
2. While pulling micro switch in the direction designated by black arrow, twist in the direction designated by
white arrow. Then, micro switch can be removed from reverse switch. See Fig. 19.

Fig. 19

Reverse switch 2. Twist in the direction
designated by white arrow
for removing,

Micro switch

Screw for securing 1. While pulling in the direction
micro switch designated by black arrow,
P 13 / 17
Repair
< 13 > Reassembling Switch
1. Secure micro switch with the screw. See Fig. 20. The fastening torque for the screw for micro switch
is 0.29 - 0.34Nm.
2. Mount F/R change lever to the switch trigger of reverse switch. See Fig. 20.
The assembling of switch has been completed in this step.
3. Mount the switch to housing R.
Fig. 20
Mount F/R change lever, while aligning
this concave portion to the boss of
trigger of reverse switch.

Boss of trigger
F/R change lever

Micro switch

Tighten this screw to 0.29 - 0.34Nm
in fastening torque, when mounting
micro switch.
Circuit diagram P 14 / 17

Color index of lead wires
Black
White
Red
Yellow
Orange
Blue
Purple
Gray

ON - OFF Switch
(Micro Switch)

Connectors
COM NO

Binding tapes

LED unit

S1 M1

S2 DC
Switch unit Controller Reverse
Motor
switch

M2 M2

Lamp unit

Buzzer
circuit

Terminal
Binding tapes
P 15 / 17
Wiring diagram

Wiring around the switch and controller section

Rib Ribs

Switch viewing from
another side

Switch

3
Hold the following lead
wires with lead holders designated
with . Pass the lead wires which are
1. Endbell's lead wire (black) put in the rear side of switch,
2. Controller's lead wire (blue) between the ribs as illustrated
3. Controller's lead wire (white) above.

Buzzer
circuit
Pass the lead wires
by the rib.
Rib
Controller

Connector Terminal
Rib

Rib

Put connectors and
lead wires between
the ribs.
P 16 / 17
Wiring diagram

Wiring around the switch and switch unit
Controller's
Controller's
lead wire (blue)
lead wire (gray)
Pass controller's lead wire (gray)
and the same of (blue) under
switch unit.
Switch unit

Controller's lead wires (blue and gray)
Connector to LED circuit

Switch
unit Do not slack the following
Put the following controller's lead wires.
Gear case * (blue)
parts in this space. to LED circuit
* Connectors * (gray)
* Extra of controller's
lead wire (purple)
* Extra of controller's
lead wire (yellow)

Do not slack the following
Rib controller's lead wires.
Motor
* (blue)
(Yoke) to LED circuit
* (gray)
Pass the following
Motor * (yellow)
controller's lead to switch unit
bracket * (purple)
wires between the ribs.
* (purple)
to Switch unit
* (yellow)
* (gray)
to LED circuit
* (blue)

Switch
Pass the lead wires
between the rib and
endbell.
Endbell
Pass the lead wires
between the ribs.

Rib

Rib
Pass the lead wires
between the ribs.
P 17 / 17

Wiring diagram
Wiring in the light holder

LED circuit
Connector

Rib
Pass the lead wires under
The extra of lead wires and
the rib.
connector have to be put in
Rib this space.
But be careful, not to put the lead
wires on the ribs or LED circuit,
when putting them.

Light holder

Rib

Pass the lead wires under
the rib.

Switch unit

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