Makita 6914D User manual

Cordless Impact Driver
Capacities No load speed Impacts
per minute
Machine screw
1 Standard bolt I Hiqh tensile bolt 'RPM1
Equipped with Electric Brake
MODEL 6914D
MODEL 6914DW
With High capacity Battery charger
Overall Net
length weight
INSTRUCTION MANUAL
Voltage
12 v
SPECIFICATIONS
~ ~~~
Input output Charging time
A.C. only 50 Hz - 60 Hr
D.C. 7.2 V ~ 14.4 V
1 Hr.
4 mm ~ 8 mm 5 mm - 12 mm 5 mm ~ 10"
15/32"
~ 5/16") (3116" - 112") 13/16" ~ 318")
Battery Cartridge 1222 I Model DC1411 High Capacity Battery Charger
WARNING: For your personal safety, READ and UNDERSTAND before using
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

GENERAL SAFETY RULES
(For All Battery Operated Tools)
WARNING! Read and understand all instructions. Failure
tofollow
all instructions listed below, may result in electric
shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
Work Area
Keepyour work area clean and well lit. Cluttered benchesand dark areas invite
accidents.
Do not operate power tools in explosiveatmospheres, such as in the presence
of flammable liquids, gases, or dust. Power tools create sparks whichmayignite
the dust or fumes.
Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to loose control.
Electrical Safety
*Abattery operatedtoolwithintegralbatteriesor a separatebattery pack must
be recharged only with the specified charger for the battery.
A charger that
may be suitable for onetypeof batterymaycreate a riskof fire when used
with
another battery.
Use battery operated tool only with specifically designated battery pack. Use
of any other batteries may create a risk of fire.
Personal Safety
Stayalert, watch what you are doing, and use commonsense when operating
a power tool.
Do not usetoolwhiletiredor under the influenceof drugs, alcohol,
or medication.
A moment of inattentionwhile operating power tools may result
in serious personal injury.
Dressproperly. Do not wear loose clothing or jewelry. Contain long hair. Keep
your hair, clothing, andgloves away frommovingparts. Loose
clothes, jewelry,
or long hair can be caught
in moving parts.
*Avoidaccidentalstarting. Be sure switchis
in the lockedor off positionbefore
inserting batterypack. Carrying tools
with your finger on the switch or inserting
the battery pack into a tool
with the switch on invites accidents.
Remove adjusting keys or switches before turning the tool on. A wrench or
a keythat is left attachedto a rotating part of thetool mayresult
in personal injury.
Do not overreach. Keep proper footing and balanceat all times. Proper footing
and balance enable better control of the tool
in unexpected situations.
Use safety equipment. Always wear eye protection. Dust mask, non-skidsafety
shoes, hard hat, or hearing protection mustbe usedfor appropriate conditions.
2

Tool Use and Care
Use clamps or other practicalway to secure and support the workpiece to a
stable platform. Holdingthe work by handor against your body is unstable and
may lead to
loss of control.
*Do not force tool. Use the correct tool for your application. The correct tool
will do the job better and safer at the rate for which it is designed.
*Do not use tool if switch does not turn it on or off. A tool that cannot be
controlled
with the switch is dangerous and must be repaired.
*Disconnect battery pack from tool or place the switch
in the locked or off
positionbefore making any adjustments, changing accessories, or storingthe
tool. Such preventive safety measures reduce the risk
of starting the tool
accidentally.
Store idle tools out of reach of children andother untrained persons. Tools are
dangerous in the hands of untrained users.
When battery pack is not in use, keep it away from other metal objects like:
paper clips, coins, keys, nails, screws, or other small metal objects that can
makea connection from one terminal toanother. Shorting the battery terminals
together may cause sparks, burns, or a fire.
Maintain tools with care. Keepcuttingtools sharp and clean. Properly maintained
tools
with sharp cutting edge are less likely to bind and are easier to control.
Check for misalignment or bindingof movingparts, breakage of parts, and any
other conditionthat may affect the tool's operation. Ifdamaged, havethe tool
serviced before using. Many accidents are caused by poorly maintained tools.
Use only accessories that are recommended by the manufacturer for your
model. Accessories that may be suitable for one tool may create
a risk of injury
when used on another tool.
Service
Tool service must be performed only by qualified repair personnel. Service or
maintenance performed by unqualified personnel may result
in a risk of injury.
When servicing a tool, use only identical replacement parts. Follow instructions
inthe Maintenance section of this manual.
Use of unauthorized parts or failure
to follow Maintenance Instructions may create a risk of shock or injury.
3

Specific Safety Rules
1. Holdtool by insulated gripping surfaceswhen performingan operation where
the cutting tool may contact hidden wiring. Contact with a "live" wire
will
also make exposed metal parts of the tool "live" and shock the operator.
2. Be aware that this tool is always in an operatingcondition, because it does
not have to be plugged into an electrical outlet.
3. Always be sure you have a firm footing.
Be sure no one is below when using the tool in high locations.
4. Hold the tool firmly.
5. Keep hands away from rotating parts.
6. Do not leave the tool running. Operate the tool only when hand-held.
7. Do not touch the drill bit or the workpiece immediatelyafter operation; they
may be extremely hot and could burn your skin.
4

The followings showthe symbols used for tool.
V ................................. volts
A ................................. amperes
Hz ................................. hens
kg
................................. kilograms
h
................................. hours
min
................................. minutes
S ................................. seconds
% ................................. alternating current
- direct current
-_--
.................................
n, ................................. no load speed
__
' 'w
................................. alternating or direct current
................................. Class II Construction
44 .................................
splash-proof construction
watertight construction
... /min
................................ revolutions or reciprocation per minute
@ ................................. number of blow
5

IMPORTANT SAFETY INSTRUCTIONS
Length of Cord (Feet) 25 50
AWG Size of Cord 18 18
FOR CHARGER &
BATTERY CARTRIDGE
100
150
18
16
I. SAVE THESE INSTRUCTIONS - This manual
6

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 notattempt touse a step-up transformer, anengine generator 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 storingbattery cartridge in a container with other metalobjectssuch
(3) Do not expose battery cartridge to water or rain.
ture may reach or exceed
5OoC 1122OF).
completely worn out. The battery cartridge can explode in a fire.
as nails, coins, etc.
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
SAVE THESE INSTRUCTIONS.
7

Installingor removing battery cartridge
*Always switch off the tool before inser-
tion
or removalof the battery cartridge.
To remove the battery cartridge, with-
draw it from the tool while pressing the
buttons on both sides 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 not, it
may accidentally
fall out of the tool, caus-
inginjury to you or someone aroundyou.
Battery cartridge A-
Do not use force when inserting the battery cartridge. If the cartridge does not slide in
easily, it is not being inserted correctly
Charging
Your new battery.cartridge is not charged.
You will needto charge
it before use. Use
the high capacity battery charger Model
DC1411 to charge the battery cartridge.
Plug the high capacity battery charger
into the proper A.C. voltage source. The
charging light will flash ingreencolor.
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 high capacity
1
battery charger. Insert the cartridgefully into the port so that it rests on the charger port
floor.
When the battery cartridge is inserted,the charging light color will changefrom greento
red and chargingwill begin.The charging light will remain lit steadily duringcharging.
When chargingis completed, the charging light color will change from red to green.The
chargingtime is approximately one hour.
After charging, unplugthe chargerfrom the power source.
CAUTION:
The high capacitybatterycharger Model DC1411 isfor charging Makita battery cartridge.
Never use it for other purposesor for other manufacturer's batteries.
When you charge a new battery cartridgeor a battery cartridgewhich 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 batterycartridgefully after discharging
it completely and recharging
a coupleof times.
8

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 charging light
may flash in red color.
If this occurs, wait for a while. Charging will begin after the battery
cartridge cools. The battery cartridge will cool faster if
you remove the battery cartridge
from the high capacity battery charger.
If the charging light flashes alternately in green and red color, a problem exists and charg-
ing is not possible. The terminals on the charger or battery cartridge are clogged with
dust or the battery cartridge is worn
out or damaged.
If you wish to charge two battery cartridge, allow 15 minutes between charging on the
high capacity battery charger.
ASSEMBLY
Installingor removing driver bit or drill bit
CAUTION:
Always be sure that the tool is switched off and the battery cartridge is removed before
installing or removing the bit
Use only the driver bit or socket bit shown
inthe figure.
Do not use any other driver bit
or socket bit.
To install the bit, pull the sleeve in the direc-
tion of the arrow and insert the bit into the
sleeve as far as it will go. Then release the
sleeve to secure the bit.
To remove the bit,
pull the sleeve
in the direction of the arrow
and pull the bit out firmly.
11 mm
17116"l
d
9 mm
1318' I
I
Bit Sleeve
NOTE:
If the bit is not inserted deep enough into the sleeve, the sleeve will not return to its
original position and the bit
will not be secured. In this case, try re-inserting the bit accord-
ingto the instructions above.
9

OPERATION
Switchaction
CAUTION:
Before insertina the batterv cartridae into the tool, always check to see that the switch
This tool has
a reversingswitch to change
the direction of rotation. Depress the re-
versing switch lever from the A side for
clockwise rotation or from the B side for
counterclockwiserotation.When the switch
lever is in the neutral position, the switch
trigger cannot be pulled.
Installingset plate
tery cartridge 1200. Installthe set plate on
the tool with the screw providedas shown
in Fig.
Always installthe set platewhen usingbat-
trigger actuates-properly and returnsto the "OFF" position when released.
To start the tool, simply pull the trigger.
Tool speed is increasedby increasingpres-
sure on the trigger. Release the trigger to
stop.
Switchtrigger
Counterclockwise
Clockwise
Screw
Reversingswitchaction
CAUTION:
Always check the direction of rotationbefore operation.
*Use the reversina switch onlv after the tool comes to
a complete stop. Changing the
10

Operation
The proper fasteningtorque may differ dependingupon the kindor size of the screw/bolt,
the materialof the workpiece to be fastened, etc. The relation between fastening torque
and fasteningtime is shown
in the figures below.
(15)
Tool screw
kg . cm
(ft . Ibs)
- a
200
(15) r
0 1-1 Seconds
0.5 1.0
Fasteningtime
Hightensile bolt
kg . cm
800
(ft Ibs)
(57) r
0 -1 Seconds
1.0 2.0 3.0
Fasteningtime
Standard bolt
kg . cm
(ft . Ibs)
(85; r
M12 (1/2")
(43)
MI2 (1/2")
.g (29) c
2
M8 (5/16") f
MlO(3/8")
200
(15) a
c
0 - Seconds
1.0 2.0 3.0
Fasteningtime
Holdthe tool firmly and place the point of the driver bit in the screw head. Apply forward
pressureto the tool to the extent that the bit will not slipoff the screw and turn the tool on
to start operation.
11

NOTE:
When fastening screw M8 or smaller, carefully adjust pressureon the switch trigger so
Holdthe tool pointed straight at the screw.
If you tighten the screw for a time longer than shown in the figures, the screw or the
point of the driver bit may be overstressed,stripped,damaged, etc. Before starting your
job, always perform a test operation to determine the proper fastening time for your
screw. When fastening
a standardscrew in a steel plate,the properfasteningtorque can
be obtained in an extremely short time (approx. 0.1 - 0.2 seconds).Turn the tool off as
soon as the impact sound is heard.
that the screw is not damaged.
The fasteningtorque is affected by awide variety of factors includingthe following.
After fastening, always check the torque with
a torque wrench.
1. When the battery cartridge is discharged almost completely, voltage will drop and the
fasteningtorque will be reduced.
2. Driver bit or socketbit
Failure to use the correct size driver bit or socket bit will cause
a reduction in the
' fasteningtorque.
3. Bolt
Even though the torque coefficient and the class of bolt are the same, the proper fas-
Even though the diameters of bolts are the same, the properfasteningtorque will dif-
4. The manner of h-olding the tool or the material of driving position to be fastened will
5. Operatingthe tool at lowspeedwillcause a reductioninthe fasteningtorque.
tening torque will differ accordingto the diameter of bolt.
fer accordingto the torque coefficient, the class of bolt and the bolt length.
affect the torque.
12

MAINTENANCE
CAUTION:
Always be sure that the tool is switched
off and the battery cartridge is removed before
attempting to perform inspectionor maintenance
Brushholder cap
Replacing carbon brushes
Remove and check the carbon brushes
regularly. Replacewhen they wear down to
the limit mark. Keep the carbon brushes
clean and free to slip in the holders. Both
Limit mark
carbon brushes should be replaced at
the same time. Use only identical carbon
brushes.
Screwdriver
Use a screwdriver to remove the brush
holder caps. Take out the worn carbon
brushes, insert the new ones and secure
the brush holder caps.
~ , ,y Brushholder cap
To maintainproduct SAFETY and RELIABILITY,repairs,maintenanceor adjustment should
be performed by
Makita Authorized or Factory Service Centers, always using Makita
replacementparts
p
Recycling the Battery
The
to recycle it. The law prohibits any other
method
of disposal. Ni-Cd
way to dispose of a Makita battery is
-
To recycle the battery:
1. Remove the battery from the tool.
2. a). Take the battery to your nearest Makita Factory Service Center
or
b). Take the battery to your nearest Makita Authorized Service Center or
Distributor that has been designated as a Makita battery recycling location.
Call your nearest Makita Service Center or Distributor to determine the location
that provides Makita battery recycling. See your local Yellow Pages under
"Tools-Electric'
!
13

ACCESSORIES
CAUTION:
These accessories or attachments are recommended for use with your Makitatool specified in this
manual. The use
of any other accessories or attachmentsmight present a risk of injury to persons.
The accessories or attachments should
be used only in the proper and intended manner.
Phillips
Bits
I Size I Part No.
#2 784214-0A
#3 784215-0A 784202-3
1
I I
Slotted I #5F I 784010-0A
45 (1.314")
(J 1 #7f 1 784011-0A
I 1
I 784606-0A
Square drill bit I
High capacity Battery charger
Model DC1411
Battery cover
Part No. 414938-7
'kzEEd
Phillips bit
Part NO. 1 Size I L (mm)
784201-5 I No. 1 I 65 (2-5/8")
65 (2-5/8")
784203-1
1 No, 1
784206-5 110 (4-3/8")
7~47n7-1 150 (5-7/8"1
Battery cartridge 1222
Part No. 192598-2
Plastic carrying case
14

sen -10-'98 us
CORDLESS IMPACT DRIVER
Model 6914D
5
T i" ;7 nr
Note: The switch and other part configurations
may differ from country to country.
15

/GtD MODEL 6914D DESCRIPTION
Sep-l0-’98 us
‘;\M DESCRIPTION
r
MACHINE
__
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
1
1
1
1
1
1
1
1
1
1
1
I
1
1
1
1
1
1
24
1
1
2
Houiirig
Ser IWitli Item 43 & 441
Namc Plate
Tapping Screw 4x18
FIR Change Lever
Rad~at~ng Plate
Pan Head Screw M3x8
Pan Head Screw M4x22
Rubber Pin 4
Switch
Holder
spring rcrnllnai ( 4 I
Spr,ng Telmlndl I I
rint washer 12
P,“ 5
Spur Gear 18
Spllldle
Compressioii Spring 24
Flat Washer 24
Sled Boll 3 5
Hammer
Anvil
StOCl Ball 3 5
MACHINE
___
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
41
42
43
44
-
1
1
4
1
1
1
1
1
1
1
1
2
1
1
1
2
2
1
3
1
1
-
Nylon Washer 14
Hammer Case Complale
Tapping Screw 4x25
Sleeve
Flat Washer 12
Ball Bearing 6001LLB
Infernal Gear Case Complete
Plate
DC Mom iWilh lfem 38 & 391
Siccl
Ball 5 6
Spur Gear 18
Pll, 5
High Capacity Ballcrv 1222 Set
Carbon Brush
Holder Cap
Rubber Pa, 4
Hex
Socket Head Bolt M3x10
Housing
Set lWllh llCm 1 & 441
Makilv Label
compresston Spmg 13
Rmng sprrng 11
Makita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi
446-8502 Japan
884124A060
MAKITALIMITEDONE YEAR WARRANTY
Warranty Policy
Every Makita tool IS thoroughly inspected and tested before leaving the factory. It IS warranted to
be free of defects from workmanship and materials for the period of ONE YEAR from the date of
original purchase. Should any trouble develop during this one-year period, return the COMPLETE
tool, freight prepaid, to one of Makita’s Factory or Authorized Service Centers.
If inspection shows
the trouble is caused by defective workmanship or material, Makita will repair lor at our option.
replace) without charge.
This Warranty does not apply where:
0 repairs have been made orattempted by others:
repairs are required because of normal wear and tear:
0 The tool has been abused, misused or improperly maintained ;
alterations have been made tothe tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEQUENTIAL DAMAGES FROM THE SALE OR USE OFTHtPRODUCT THIS DISCLAIMER
APPLIES BOTH DURING AND AFTER THE TERM Of THIS WARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLltD
WARRANTIES
OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,”
AFTER THEONE-YEAR TFRM
OF THIS WARRANTY.
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 hmitation may not apply to you.
PRINTED IN JAPAN
1998 - 9 - N