Makita 8412D User manual

Cordless Percussion-Driver Drill
Capacltlcs
COllCrele stce1 WOOd Wood screw
1" ,,1n1 (3,8"I 1.3 mm (i/z") 24 mrn (15/16") :l;4m: :~,",?,gT
Equipped with electric brake
MODEL 8412D
MODEL 8412DW
With Fast Charger
No load speed 1RPMI
High LOW
0 1.150 0 370
INSTRUCTION MANUAL
High
1L x W x HI
Low
- Battery Cartridge 1201
I - Model DC1201 Fast Charger
0 12,700
2 2 kg 14 9 Ibsl
313
mm x 79 mm x 225 mm
112~318" x 3 118" x 8 718"l
0 4.100
vo1tagc
Input Output Charging lime
12 v
A C only 50 Hr 60 Hr DC 96V. 12V 1 Hr.

IMPORTANT
SAFETY IN STRU CTI 0 N S
(For All Tools)
WARNING: WHEN USING ELECTRICTOOLS, WSlCSAFETY
PRECAUTIONSSHOULD ALWAYS BE FOLLOWEDTO REDUCE
THE RISK OF FIRE, ELECTRIC SHOCK, AND PERSONAL
INJURY, INCLUDING THE FOLLOWING:
READ ALL INSTRUCTIONS.
1. KEEP WORK AREA CLEAN. Cluttered areas and benches invite injuries.
2. CONSIDER WORK AREA ENVIRONMENT. Don't use power tools in damp
or wet locations. Keep work area well
lit. Don't expose power tools to rain.
Don't use tool
in presence of flammable liquids or gases.
3. KEEP CHILDREN AWAY. All visitors should be kept away from work area.
Don't let visitors contact tool or extension cord.
4. STORE IDLETOOLS. When notinuse, tools should be stored in dry, and high
or locked-up place
- out of reach of children.
5. DON'T FORCETOOL. It will do thejob better and safer atthe ratefor which
it was intended.
6. USE RIGHT TOOL. Don't force small tool or attachment to do the job of a
heavy-dutytool. Don't use toolfor purpose notintended; for example, don't
use circular saw for cutting tree limbs or logs.
7. DRESS PROPERLY. Don't wear loose clothing orjewelry. They canbe caught
in moving parts. Rubber gloves and non-skid footwear are recommended
when working outdoors. Wear protective hair covering tocontain long hair.
8. USE SAFETY GLASSES. Also use face or dust mask if cutting operation is
dusty.
9. DON'T ABUSE CORD. Never carry tool by cord or yank it todisconnect from
receptacle. Keep cord from heat, oil, and sharp edges.
IO. SECURE WORK. Use clamps or a vise to hold work. It's safer than using
your hand and
it frees both hands to operate tool.
11. DON'T OVERREACH. Keep proper footing and balance at all times.
12. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for better and
safer performance. Follow instructions for lubricating and changing acces-
sories. Inspect toolcords periodicallyand
if damaged, have repairedby autho-
rized service facility. Inspect extension cords periodically and replace
if
damaged. Keep handles dry, clean, and free from oil and grease.
13. DISCONNECTTOOLS. When not in use, before servicing, and when chang-
ing accessories, such as blades, bits, cutters.

14. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are removedfrom tool before turning
it on.
15. AVOID UNINTENTIONALSTARTING. Don't carry toolwithfinger on switch.
Be sure switch is OFF when plugging in.
16. OUTDOOR USE EXTENSIONCORDS. Whentool is usedoutdoors, use only
extension cords intended for use outdoors and
so marked.
17. STAY ALERT. Watch what you are doing, use common sense. Don't operate
tool when you are tired.
18. CHECK DAMAGED PARTS. Before further use of the tool, a guard or other
part that is damaged should be carefully checked to determine that
it will
operate properly and perform its intended function. Check for alignment of
movingparts, bindingof movingparts, breakageof parts, mounting, and any
other conditions that may affect its operation. A guard or other part that
is damaged should be properly repaired or replaced by an authorized serv-
ice center unless otherwise indicated elsewhere
in this instruction manual.
Have defective switches replaced by authorized service center. Don't use
tool if switch does not turn
it on and off.
19. GUARD AGAINST ELECTRIC SHOCK. Prevent body contact with grounded
surfaces. For example; pipes, radiators, ranges, refrigerator enclosures.
20. REPLACEMENT PARTS.When servicing, useonly identicalreplacementparts.
21. POLARIZED PLUGS. To reduce the risk of electric shock, this equipment has
a polarized plug (one blade is wider than the other). This plug will fit in a
polarized outlet only one way. If the plug does not fit fully
in the outlet,
reversethe plug. If
it still does notfit, contact aqualified electriciantoinstall
the proper outlet. Do not change the plug
in any way.
VOLTAGE WARNING: Before connectingthe tool toa power source (receptacle,
outlet, etc.) be sure the voltage supplied is
the same as that specified on the
nameplateof the tool. A power source with voltage greater than that specified
for the tool can result in SERIOUS INJURY tothe user
- as well as damage to
the tool. If in doubt, DO NOT PLUG IN THE TOOL. Using a power source with
voltage less than the nameplate rating is harmful to the motor.

IMPORTANT SAFETY INSTRUCTIONS
FOR CHARGER
&
BATTERY CARTRIDGE
I. SAVE THESE INSTRUCTIONS - This manual
Length of Cord (Feet)
AWG Size of Cord
25
50 100 150
18 18 18 16
4

ADDITIONAL SAFETY RULES
FOR CHARGER
& BATTERY CARTRIDGE
1. Do not charge Battery Cartridge when temperature is BELOW 10°C (5OOF)
or ABOVE 4OoC (104OF).
2. Do notattempttouse a step-uptransformer, an enginegenerator or DC power
3. Do not allow anything to cover or clog the charger vents.
4. Always cover the battery terminals with the battery cover when the battery
5. A battery short can cause a large current flow, overheating, possible burns
receptacle.
cartridge is not used.
and even a breakdown.
(1 ) Do not touch the terminals with any conductive material.
(2) Avoid storing battery cartridge in a container with other metal objects
such as nails, coins, etc.
(3) Do not expose battery cartridge to water or rain.
ture may reach or exceed 5OoC (122OF).
completely worn out. The battery cartridge can explode
in a fire.
6. Do not store the tool and Battery Cartridge in locations where the tempera-
7. Do not incinerate the Battery Cartridge even if it is severely damaged or is
ADDITIONAL SAFETY RULES
1. Be aware that this tool is always in an operating condition, because it does
not have to be plugged into an electrical outlet.
2. Wear a hard hat (safety helmet), safety glasses andlor face shield. It is also
highly recommendedthat you wear a dust mask, ear protectors and thickly
padded gloves.
3. Under normal operation, the tool isdesigned toproduce vibration. The screws
can come loose easily, causing a breakdown or accident. Check tightness of
screws carefully before operation.
Be sure no one is below when using the tool in high locations.
4. Always be sure you have a firm footing.
5. Hold the tool firmly.
6. Keep hands away from rotating parts.
7. Do not leave the tool running. Operate the tool only when hand-held.
8. When drilling into walls, floors or wherever "live" electrical wires may be
encountered, DO NOT TOUCH ANY METAL PARTS OF THE
TOOL!
Hold the tool by the insulated grasping surfaces to prevent electric shock if
you drill into a "live" wire.
9. Do nottouch the bit or the workpiece immediately after operation; they may
be extremely hot and could burn your skin.
SAVE THESE INSTRUCTIONS.
5

.To remove the battery cartridge, pull out
the
set plate on the tool and grasp both
sides of the cartridge while withdrawing
it
from the tool.
*To insert the battery cartridge, align the
tongue on the battery cartridge with the
groove in the housing and slip
it into
place. Snap the
set plate back intoplace.
Be sure to close the set platefully before
using the tool to prevent the battery car-
tridge from accidentally falling out of the
tool.
Do not use force when inserting the battery cartridge. If the cartridge does not slide in
easily,
it is not being insertedcorrectly.
Set plate
Battery cartridge
Charging
Your new batterycartridge is notcharged.
You will need to charge
it before use.
Use the fast charger Model
DC1201 to
charge the battery cartridge.
.Plug the fast charger into the proper
A/C
voltage source. The charging light will
flash ingreen color.
.Insert the battery cartridge
so that the
plus and minus terminals on the battery
cartridge are on the same sides
as their
respective markings on the fast charger.
Insert thecartridge fully into the port
so that it restsonthe charger port floor.
When the battery cartridge is inserted, the charging light color will change from green
to red and chargingwill begin. The charging lightwill remain
lit steadily duringcharging.
When charging is completed, the charging light color will change from redtogreen and
a tone will sound steadily for about 5 seconds.
After charging, unplug the charger from the power source. Refertothetable below for
the chargingtime.
1200
DC1201
Approx. 45 min.
I 1201 I ADDrox. 60 min. I
6

CAUTION :
*The fast charger Model DC1201 is specifically designed to charge only Makita battery
cartridges. Never use
it for other purposesor for other manufacturer's batteries.
0 When you charge a new battery cartridge or a battery cartridge which has not been used
for
a long period of time, it may not accept a full charge.This is a normal condition and
does not indicate
a problem. You can rechargethe battery cartridge fully after discharg-
ing
it completely and recharging a couple of times.
0 If you charge a battery cartridge from a just-operated tool or a battery cartridge which
has been left in
a location exposed to direct sunlight or heat for a long time, the charg-
ing light may flash in redcolor. Ifthis occurs, wait for
a while. Chargingwill begin after
the battery cartridge cools.
0 If the charging light flashes alternately in green and redcolor and a tone sounds "beep,
beep, beep,
. . .'I for about 20 seconds, a problem exists and charging is not possible.
The terminals on the charger or battery cartridge are clogged with dust or the battery
cartridge
is worn out or damaged.
0 If youwish to charge two battery cartridges, allow 15 minutes betweenchargings on the
fast charger.
Installing
or removing the drill bit or driver bit
CAUTION
:
Always be sure that the tool is switched off and the battery cartridge is removedbefore
installingor removingthe bit.
To install the bit, push the
sleeve up to-
ward the
"FREE" side and turn the sleeve
counterclockwise while holding the ring
with your other hand
as illustrated at right.
Place the bit in the chuck as far as it will
go. Holdthe ringfirmly and turnthe
sleeve
clockwise to tighten the chuck. Then push
the sleeve downtoward the "LOCK" side.
To remove the bit, push the
sleeve up toward the "FREE" side and turn the sleeve
counterclockwise while holdingthe ring with your other hand.
7

CAUTION :
0 Do not attempt to turn the sleeve forcibly when the sleeve is inthe "LOCK" position.
The chuck may be damaged.
Always push the sleeve downtowardthe "LOCK" side before operation. If you operate
the tool with the
sleeve in the "FREE" position, the chuck may loosenand the bit may
come out unexpectedly.
Switch action
To start the tool, simply pull the trigger.
Tool speed
is increased by increasing pres-
sure on the trigger.
Release the trigger to
stop.
Switch trigger 2 1; 1 I
CAUTION :
Before inserting the battery cartridge into the tool, always check to see that the switch
trigger actuatesproperly and returns to the
"OFF" positionwhen released.
Reversingswitch action
This tool has
a reversing switch to change
the direction of rotation. Move the revers-
ingswitch tothe left for clockwise rotation
or to the right for counterclockwise rota-
tion.
\
I
Reversing switch 1 1'8
CAUTION :
Always check thedirection of rotation before operation.
0 Move the reversing switch only after the tool comes to a complete stop. Changingthe
direction of rotation before the tool stops. may damage the tool.
Speed change
To change the speed,
slide the speed
change lever to the "2" side for high speed
or
"1" side for low speed. To slide the
speed change lever easily, pull the trigger
slightly while pushing
the speed change
lever. Be sure that the speed change lever
is
set tothe correct position before operation.
Use the right speed for your job.
CAUTION:
Always
set the speed change lever fully into the correct position. Ifyou operatethe tool
with the speed change lever positioned halfway between the
"2" side and "1" side, the
tool may be damaged.
8

Adjusting the fastening torque
Turn the adjusting ring
so that the pointer
points to
a number on the adjusting ring.
The fastening torque
is minimum when
the pointer points to the number
1 and
maximum when
it points to the mark.
The clutch will
slip at varying torque levels
when the pointer points to the numbers
1 to 10. The clutch is designed not to slip
at the 6” mark.
Before actual operation, drive
a trial screw
into your mateiral or
a piece of duplicate
NOTE
:
The adjusting ring cannot be locked with the pointer positioned halfway between the
numbers.
~~
L
-_
Adjusting ling __
Lp
Action mode
This tool employs action mode changing
buttons. For rotation only, press the
buttonon the
O-LV mark side fully.
For rotation with hammering action, press
the buttononthe
@I mark side fully.
Action mode
changing button k-
CAUTION :
Be sure to press the action modechanging button as far as it will go. Failure to do so may
cause malfunction of the
tool.
Operation
1) Hammer drilling operation
When drilling in concrete, granite,
tile, etc., press the action modechanging buttonon
the mark side fully. Position the adjusting ring
so that the pointer points to the
mark. Be sure to use
a tungsten-carbidetipped bit. To position a hole accurately,
start the tool slowly and then increasethe drillingspeed gradually. Do not apply more
pressure when the hole becomes clogged with chips
or particles. Instead, runthe tool
at an idle, then remove the bit partially from the hole. By repeatingthis several times,
the hole will be cleanedout.
CAUTION
:
Pressing excessively on the tool will not speed up the drilling. In fact, this excessive
pressure will only serve to damage the tip of your bit, decrease the tool performance
and shorten the service life of the tool.
9

After drilling the hole, use the blow-out
bulbto clean the dust out
of the hole.
2) Drilling operation
When drilling in wood, metal or plastic materials, press the action mode changing
button on the
a== mark side fully. Position the adjusting ring so that the pointer
points tothe
6-q mark.
0 Drillinginwood
When drilling in wood, best results are obtained with wood drills equipped with
a
guide screw. The guide screw makes drilling easier by pulling the bit into the work-
piece.
To prevent the bit from slipping when starting
a hole, make an indentation with a
centerpunch and hammer at the point to be drilled. Place the point of the bit inthe
indentation and start drilling. Use
a cutting lubricant when drilling metals. The ex-
ceptionsare ironand brass which should be drilled dry.
0 Drilling in metal
CAUTION
:
0 Pressing excessively on the tool will not speed up the drilling. Infact, this excessive
pressure will only serve to damage the tip of your bit, decrease the tool performance
and shorten the service life of the tool.
0 There is a tremendoustwisting force exertedon thetool/bit at the time of holebreak-
through. Hold the tool firmly and exert care when the bitbeginsto breakthroughthe
workpiece.
0 A stuck bit can be removedsimply by settingthe reversingswitchto reverse rotation
in order to back out. However, the tool may back out abruptly if you do not hold
it
firmly.
0 Always secure small wokpieces in a vise or similar hold-downdevice.
3) Screwdrivingoperation
When driving wood screws or machine
screws, press the action mode changing
button on the
a== mark side fully.
Adjust the desired torque by turning the
adjusting ring. Place the point of the
driver bit into the screw head and apply
pressure to the bit. Start the tool slowly
and then increase the driving speed
gradually.
Release the trigger as soon as
the clutch slips.
10

When driving wood screws, predrill pilot
Nomlnal diameter of
holes to make driving easier and to
screw I")
3 1 1118")
3.5 19164")
3.8 15/32"]
4.5 (11/64")
4.8
(3116")
5 1 I1 3/64',)
5 5 17/32")
prevent splitting of the workpiece. See
the chart at right.
5 8 115164"l I 4 0 4 2 15/37" ~ 11164"l
Recommended size
of pilot hole Imml
2 0 2 2 15/64" ~ 3/32',)
2.2
~ 2.5 (3132'' ~ 3/32")
2.5
- 2.8 13/32" ~ 7/64")
2.9
~ 3 2 (7164'' ~ 118")
3 1 ~~ 3.4 (118'' ~ 9/64"!
3 3 ~ 3.6 11/8" ~ 9/64")
3 6 ~ 3 9 19/64" 5/32")
~~ ~~
4 2 ~ 4.4 11 1164" 11/64") 6 1 (15164") I
fi 4 I1 14")
I A 4 4 fi I1 lifiA" ~ ?/lfi")
Metal
Wood
Masonry
(Hammer
drilling)
*Occasionally the adjusting ring cannot be reset to the OW mark after screwdriving
operation.
If this occurs, let the clutch slip or turn the chuck by your hand.
-
6.5 mm (114'7 Cold-rolled steel sheet 1,6 mm 11,16,,1 Approx 60 Approx 80
10 mm 13/8") or plate Approx 25 Approx 35
10
mm 1318") Aluminum sheet 1.6 mm 11/16") Approx. 130 Approx. 180
15 mm 1518") Approx. 11 5 Approx. 160
Approx. 70 Approx. 95
18 mm (1 111 6")
24 mm (15116") Approx. 35 Approx. 45
9.5 mm 1318") Brick 30 mm (1~3116") Approx. 25 Approx. 35
6.5 mm 1114") Approx. 25 Approx. 35
9.5 mm 13/8"1 Approx. 12 Approx. 16
Lauan
wood
25 mm (1")
- 510ck 30 mm j 1-311 6")
Drilling, hammer drilling and screwdriving performance
The following reference table indicates the approximate drilling, hammer drilling and
screwdriving capacities from a single
1 hour battery charge. It may differ under some
condition.
hnensions of wood screwApplication
4.5 mm x 20 mm 13/16" x 314")
5 1 mm x 35 mm (3116" x 1~318")
5.5 mm x 50 mm (7132" x 2")
6 4 mm x 50 mm (1/4" x 2")
~
Wood
scrcws
No. holes
Batterv 1200 I Batterv 1201
Application Bit diameter 1 Workpiece I Thickness 1
Fastenings
Battery 1200 Battery 1201
Approx. 440 Approx.
610
Approx. 100 Approx. 140
Approx.
70 Approx. 90
Approx. 40 Approx. 50
Workpiece
Lauan wood
11

MAINTENANCE
CAUTION :
Always be sure that the tool is switched off and the battery cartridge is removedbefore
attempting toperform inspection or maintenance.
Pari No.
784201-5
784202~3
784203-1
784206-5
784207-3
784221-9
784208-1
7
8 4 2 0 9 ~ 9
784210-4
To maintain product SAFETY and RELlABlLITY, repairs, maintenance or adjustment
should be performed by Makita Authorized or Factory Service Centers, always using
Makita replacementparts.
0.8 1.031”)
Size L lmm)
No. 1 65 (2-518“)
45 I1 ~314”)
65 (2.518”)
No. 2 1 10 (4~318“)
150 15-7/8”)
250 I1 0”)
45 11~314”)
No. 3 65 12-518”)
110 14-318“)
Drill bit (For wood)
Part No, I Size I L (mm) I D lmm) I d Imm) Part No
784204~9 No. 2 82 13-114”) 6 1114”) 5 (3116”) 791059-5
791 058~7
Size lmml
9 (1 1/32’,)
12 (1 5/32,’)
I
791057-9 I 15 (1 9132“l
12

*Drill bit set (For steel)
Part No.
. Tungsten-carbide tipped bit
Sire lmml
Part No
Bit diameter
Max. drilling Overall length
lmm) depth lmml Imm)
791006 6 Id-
791005 8
6 0 I1/4"l
2 0 (5164"l
3
0 I1 /8"l
~~
Each 1 oer set
791092 7
791028 6
71 1057 3
Rubber pad assembly
Part No. 123001-2
6 5 1114")
50 12") 80 13~118")
7 5 19132"l
60 12~318") 90 13~112")
8 0 15/16'']
95 13~314") 120 14 3/4"l
Foam polishing pad
Part No.794159 0
791008~218.5 111132"l I7513")
Wool bonnet
Part No. 794172-8
100 14")
- Plastic carrying case
Part No. 182525-7
Fast charger
Model
DC1201
Battery cartridge 1201
Part No. 192293-4
Battery cover
Part No. 414938-7
Dust cover
Part No. 415165-9
13