Makita 6912D User manual

Cordless Ratchet Wrench
7.2 V
With 318’’ Square Drive Socket Adapter
MODEL 6912D
MODEL 6912DW
With Fast Charger
1 Hr. A.C. only 50 Hz - 60 Hz
D.C. 7.2V
INSTRUCTION MANUAL
SPECIFICATIONS
7 IRPMI 1 Tightening torque Overall length Net weight
No load speed
Capacities
Bolt size
12
mm (112’’) I 400 I 38 kg . cm 12.7 ft . Ibsl I 322 mm I12-11/16”1 I 0.85 kg 11.9 Ibsl
Battery Cartridge 7000
I Model DC7100 Fast Charger
Voltage
I Charging time I Input I output

IMPORTANT
SAFETY INSTRUCTIONS
(For All Tools)
WARNING:
WHEN USING ELECTRIC TOOLS, BASIC SAFE-
TY PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO
SONAL INJURY, INCLUDING THE FOLLOWING:
REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, AND PER-
READ ALL INSTRUCTIONS.
1.
2.
3.
4.
5.
6.
7.
8.
9.
IO.
11.
12.
13.
2
KEEP WORK AREA CLEAN. Cluttered areas and benches invite injuries.
CONSIDER WORK AREA ENVIRONMENT. Don't use power tools in damp
or wet locations. Keep work area well
lit. Don't expose power tools torain.
Don't use tool in presence of flammable liquids or gases.
KEEP CHILDREN AWAY. All visitors should be kept away from work area.
Don't let visitors contact tool or extension cord.
STORE
IDLE TOOLS. When not in use, tools should be stored indry, and high
or locked-up place
- out of reach of children.
DON'T FORCE TOOL.
It will dothejob better and safer at the ratefor which
it was intended.
USE RIGHT TOOL. Don't force small tool or attachment to do the job of a
heavy-duty tool. Don't use tool for purpose not intended.
DRESS PROPERLY. Don't wear looseclothing or jewelry. They can be caught
in moving parts. Rubber gloves and non-skid footwear are recommended
when working outdoors. Wear protective hair covering tocontain long hair.
USE SAFETY GLASSES. Also use face or dust mask
if cutting operation is
dusty.
DON'T ABUSE CORD. Never carry tool by cord or yank
it todisconnect from
receptacle. Keep cord from heat, oil, and sharp edges.
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.
DON'T OVERREACH. Keep proper footing and balance at all times.
MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for better and
safer performance. Follow instructions for lubricating and changing acces-
sories. Inspecttool cords 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.
DISCONNECTTOOLS. When not inuse, 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 andadjusting wrenches are removedfrom tool before turning
it on.
15. AVOID UNINTENTIONALSTARTING. Don’t carry plugged-intool with finger
on switch. Be sure switch is
OFF when plugging in.
16. OUTDOOR USE EXTENSION CORDS. Whentoolis usedoutdoors, useonly
extension cords intended for use outdoors and
so marked.
17. STAY ALERT. Watchwhat 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, binding of movingparts, breakage of 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 inthis 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. REPLACEMENTPARTS. When servicing, useonly identical replacement parts.
VOLTAGE WARNING: Before connectingthe tooltoa power source (receptacle,
outlet, etc.) be sure the voltage supplied is the same as that specified on the
nameplate of 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.
3

IMPORTANT SAFETY INSTRUCTIONS
Length of Cord (Feet)
AWG Size of Cord
I. SAVE THESE INSTRUCTIONS - This manual
25 50
100 150
18 18 18 16
9. Do not operate charger with damaged cord or plug - replace them im-
mediately.
IO. Do not operatechargerif it has receivedasharp blow, beendropped, or other-
wise damaged in any way; take
it to a qualified serviceman.
11. Do not disassemble charger or battery cartridge; take it to a qualified
serviceman when service or repair is required. Incorrect reassembly may
result in a risk of electric shock or fire.
12. To reduce risk of electric shock, unplug charger from outlet before attempt-
ingany maintenance or cleaning. Turningoff controls will not reducethis risk.
4

ADDITIONAL SAFETY RULES
FOR CHARGER
& BATTERY CARTRIDGE
1. Do not charge Battery Cartridge when temperature is BELOW 10°C (5OOF)
2. Donotattempt touseastep-uptransformer, an engine generator or DCpower
3. Do not allow anything to cover or clog the charger vents.
4. Always cover the batteryterminals with the battery cover when the battery
5. A battery short can cause a large current flow, overheating, possible burns
or ABOVE 4OoC
(104OF).
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 withother metalobjects such
(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.
as nails, coins, etc.
6. Do not store the tool and Battery Cartridge inlocations 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 isalways in an operating condition, because it does
2. Don't use or leave the tool in damp or wet locations.
3. Don't use in rain.
4. Check the socket carefully for cracks or damage before operation.
5. To prevent bolts or nuts from being damaged, do not overtighten them.
not have to be plugged into an electrical outlet.
SAVE THESE INSTRUCTIONS.
5

Installingor removingbattery cartridge
.Always switch off the tool before insertion or removalof the battery cartridge.
.To remove the battery cartridge, pull out
I I
the set plate on the tool andgrasp both
Set plate
sides of the cartridge while withdrawing it
I------
from the barrel. I
I
Batterycartridge
I,
0 Do not use force when insertingthe battery cartridge.
Ifthe cartridge does notslide ineasily,
it is not being insertedcorrectly.
Charging
Plug the fast charger into your power
source. insert the battery cartridge
so that
the plus and minus terminals on the bat-
tery cartridge are on the same sides
as their
respective markings on the fast charger.
Insert the cartridge fully into the port
so
that it rests on the charger port floor.
The charging light will come on and charg-
ing will begin. If the charging light does
not come on, press the reset button. Ifthe
charging light goes out within 10 seconds
even after pressing the reset button
a
couple of times, the battery cartridge is dead. (CAUTION: Wait for morethan 5seconds
after the charging light goes out to press the reset button again.) Replace
it with a new
one. When the charging light goes out after about one hour, you may remove the fully
charged battery cartridge.
After charging, unplugthe charger from the power source.
CAUTION
:
0 Your new battery cartridge is notcharged. You will needtocharge it before use.
0 If you try to charge a cartridge from a just-operated tool, sometimes the charginglight
will not come on. If this occurs,
let the cartridge cool off for a while. Then re-insert it
and try tocharge it once more.
When you charge a new battery cartridge or a battery cartridge which has not been used
for
a long period, it may not accept a full charge. This is a normal conditionand does
not indicate
a problem. You can recharge the battery cartridge fully after discharging
it almost completely a couple of times.
0 If you wish tocharge two battery cartridges, allow 15 minutesbetweenchargings on the
fast charger.
6

Installingsocket adapter
When youwish touse a smaller size socket,
install the socket adapter.
To install it, insert the socket adapter into
the socket inthe tool, makingsure that the
tightening direction matches the arrow on
the tool.
To loosen the nut or bolt, turn the tool
over (upside-down) and insert the socket
adapter intothe socket inthe tool.
-.
socket over the nut or bolt. Turn the
tool on and continue to tighten until
the torque limiter actuates, then
turn
Socket adapter
I
'
Switch action
To start the tool, simply depress the switch
lever.
Release the switch lever to stop.
Switch lever
I
CAUTION:
Before inserting the battery cartridge into the tool, always check to
see that the switch
Jever actuates properly and returnsto the
"OFF" position when released.
Operation 3
1. Motor-driven semi-tighteningoperation
Make sure that the tightening direction
matches the arrow on the tool. Hold
the tool bv the orir, area and
dace the
the tool
off
CAUTION :
When operatingthe tool, be sure to placethe socket over the nut or bolt securely.

2. Final manual tightening operation
Standard
After turning the tool off, perform the
pulling on the tool grip in the same
tightening direction.
that can
be tightened with this tool is
bolt Size
final manual tightening operation by M8
M10
M12
5/16"
3/8"
The maximum size of standard bolts
1/2" (socket size: 13/16'). Refer tothe
table for the correct tightening torque
and check the torque with
a torque
wrench.
7116"
439 kg
. cm
I (31.7ft . Ibs.) I 13/16"
112"
Tightening Socket
torque size
13 mm
115 kg
. cm
(8.3ft
.Ibs.)
230 kg . cm
(16.6ft. Ibs.)
l7 mm
400 kg . cm
(28.9ft
. Ibs.) l9 mm
9/16"
115kg.cm
(8.3ft
. Ibs.)
185 kg
. cm
(13.4ft
. Ibs.) 21132"
296 kg . cm
121.4 ft
. Ibs.) 3/4"
CAUTION :
*When performing the final manual tightening operation, be sure to holdthe grip area of
the tool.
*Avoid the following abusive techniques. They can cause the nut or bolt to break
as well
as cause tool damage.
I) Grippingtoward the end of the tool.
11) Stepping on the tool.
Ill) Strongly applying your weight to the tool.
IV) Attaching a pipe or bar to the end of the tool to create more force on the tool.
0 During final tightening, if your hand does not feel an increasing force on the nutor bolt
as you pull, the nut or bolt may already be tightened excessively.The nut or bolt may
be very close to breaking. Replace the nutor bolt with
a new one.
3. Looseningoperation
To loosen the nut or bolt, turn the tool over (upside-down). Loosen the nut or boltby
pulling on the tool grip manually in the loosening direction. Then turn the tool on to
quickly and efficiently remove the nut or bolt.
8

MAINTENANCE
CAUTION :
Always be sure that the tool is switched off and the battery cartridge is removedbefore
attempting to perform inspection or maintenance.
To maintain product SAFETY and RELlABlLITY, repairs, maintenance or adjustment
should be performed
by Makita Authorized or Factory Service Centers, always using
Makita replacementparts.
9

ACCESS0 R I ES
CAUTION :
These accessories or attachments are recommended for use with your Makita tool specified in this
manual. The use of any other accessories or attachments might present
a risk of injury to persons.
The accessories or attachments should be used only in the proper and intended manner.
e Fast charger
Model DC7100
*Charger 12V for car
Model DC7112
e Battery cartridge 7000
Part No. 632002-4
Battery cover
Part No. 414938-7
e Socket adapter 9.5
(Squaredrive size 3/8")
Part No. 785404-4
e Socket adapter 12.7
(Squaredrive size 1 /2")
Part No. 785403-6
e Battery holster
Holster holds extra battery.
Part
No. 823033-36
10

June-26-'86 EN
CORDLESS RATCHET WRENCH
Model 69120
Note: The switch and other part configurations
may differ from country to country.
11

MODEL 6912D June- 26-’86 EN
/LM $tD DESCRIPTION
‘i,‘dn A:D DESCRIPTION
~
1 2 Hex Socket Head Bolt M4x18
2 1 Sub Housing
R
3 2 Hex Socket Head Boll M4x25 (WithWarherl
4 1
Name Plate
5 2 Hex Socker Head Bolt M4x25 (With Warherl
6 2 Flat Washer 4
7 1 Housing R
8 1 set Plate
9 1 Switch Lever
10 1 Compresrlon Spring 6
11 1 Motor
12 1 SpurGear 17
13 1 Flat Washer 15
14 1 Internal
Gear 49
15
3 Sp~Gear 16
16
3 Pin3
11
1 Clutch Cam
18 1 Splndle
19 1 Steel Ball 3 5
20 1 Flat Washer 10
21 1
22 1
23
1
24 1
25 1
26 1
21 1
28 1
29 1
30 1
31 1
32 1
33 1
34
1
35 1
36 1
31
4
38 1
39 2
40 2
Needle Bearing 1015
Battery Holder
Collar
Switch
Torsion Spring 5
Spwg Pawl
Torslo” Spring I
Sleeve 4
Ratchet
Pawl
Ratchet Holder
Socker 21
Ring Spring 18
Prn 4
Compresslo”
SQrlng 2 4
Steel Elall 3 5
noustng L
Hex Nut M4
Sub Housing L
Hex Nut M4
Spring Warher 4
MAKflA LIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thoroughly inspectedand tested before leavingthe factory. It is warranted to
be free of defects from workmanshipand materials for the period of ONE YEAR from the date of
origjnal purchase. Should any trouble develop during this one-year period, return the COMPLETE
tool, freight prepaid,
to one of Makita’s Factory or Authorized ServiceCenters. If inspectionshows
the trouble is caused by defective workmanship or material, Makita
will repair (or at our option,
replace) without charge.
This Warranty does not apply where:
repairs have been made or attempted by others:
repairs are required because of normal wear and tear:
The tool has been abused, misused or improperly maintained;
alterations have been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEOUENTIAL DAMAGES
FROM THE SALE OR USE OFTHE PRODUCT.THIS DISCLAIMER
APFLIESBOTH
DURING AND AFTER THE TERM OF THIS WARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED
WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE.’’
AFTER THEONE-YEAR TERM OFTHISWARRANTY.
This Warranty gives you specific legal rights, and you may also have other rights which vary from
state to state. Some states do not allow the exclusion or limitation of incidental or consequential
damages,
so the above limitation or exclusion may not apply to you. Some states do not allow
limitation on how long an implied warranty lasts,
so the above limitation may not apply to you.
7 -
Makita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi 446 Japan
883549D065 PRINTED IN JAPAN
1992 - 5 - N