Makita Grinder BGA402 User Manual

INSTRUCTION MANUAL  
Cordless Angle Grinder  
BGA402  
BGA450  
BGA452  
007214  
IMPORTANT: Read Before Using.  
1
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For Model BGA452  
Noise  
The typical A-weighted noise level determined according  
to EN60745:  
Sound pressure level (LpA) : 73 dB(A)  
Uncertainty (K) : 3 dB(A)  
The noise level under working may exceed 80 dB (A).  
The technical documentation is kept by our authorised  
representative in Europe who is:  
ENG104-2  
Makita International Europe Ltd.  
Michigan Drive, Tongwell,  
Milton Keynes, Bucks MK15 8JD, England  
30.1.2009  
Wear ear protection.  
ENG208-5  
Vibration  
000230  
The vibration total value (tri-axial vector sum) determined  
according to EN60745:  
Tomoyasu Kato  
Director  
Work mode : surface grinding  
Makita Corporation  
3-11-8, Sumiyoshi-cho,  
Anjo, Aichi, 446-8502, JAPAN  
Vibration emission (ah,AG) : 8.5 m/s2  
Uncertainty (K) : 1.5 m/s2  
The declared vibration emission value has been  
measured in accordance with the standard test method  
and may be used for comparing one tool with another.  
The declared vibration emission value may also be used  
in a preliminary assessment of exposure.  
The declared vibration emission value is used for main  
applications of the power tool. However if the power tool  
is used for other applications, the vibration emission  
value may be different.  
GEA006-2  
General Power Tool Safety  
Warnings  
WARNING Read all safety warnings and all  
instructions. Failure to follow the warnings and  
instructions may result in electric shock, fire and/or  
serious injury.  
WARNING:  
Save all warnings and  
instructions for future reference.  
The term "power tool" in the warnings refers to your  
mains-operated (corded) power tool or battery-operated  
(cordless) power tool.  
The vibration emission during actual use of the  
power tool can differ from the declared emission  
value depending on the ways in which the tool is  
used.  
Be sure to identify safety measures to protect the  
operator that are based on an estimation of  
exposure in the actual conditions of use (taking  
account of all parts of the operating cycle such as  
the times when the tool is switched off and when it  
Work area safety  
1.  
2.  
Keep work area clean and well lit. Cluttered or  
dark areas invite accidents.  
Do not operate power tools in explosive  
atmospheres, such as in the presence of  
flammable liquids, gases or dust. Power tools  
create sparks which may ignite the dust or fumes.  
Keep children and bystanders away while  
operating a power tool. Distractions can cause  
you to lose control.  
is running idle in addition to the trigger time).  
ENH101-15  
3.  
For European countries only  
EC Declaration of Conformity  
We Makita Corporation as the responsible  
manufacturer declare that the following Makita  
machine(s):  
Designation of Machine:  
Cordless Angle Grinder  
Model No./ Type: BGA450,BGA452  
are of series production and  
Conforms to the following European Directives:  
2006/42/EC  
And are manufactured in accordance with the following  
standards or standardised documents:  
EN60745  
Electrical safety  
4.  
Power tool plugs must match the outlet. Never  
modify the plug in any way. Do not use any  
adapter plugs with earthed (grounded) power  
tools. Unmodified plugs and matching outlets will  
reduce risk of electric shock.  
5.  
6.  
Avoid body contact with earthed or grounded  
surfaces such as pipes, radiators, ranges and  
refrigerators. There is an increased risk of  
electric shock if your body is earthed or grounded.  
Do not expose power tools to rain or wet  
conditions. Water entering  
a
power tool will  
increase the risk of electric shock.  
3
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7.  
Do not abuse the cord. Never use the cord for  
carrying, pulling or unplugging the power tool.  
Keep cord away from heat, oil, sharp edges or  
moving parts. Damaged or entangled cords  
increase the risk of electric shock.  
Power tool use and care  
17. Do not force the power tool. Use the correct  
power tool for your application. The correct  
power tool will do the job better and safer at the  
rate for which it was designed.  
8.  
9.  
When operating a power tool outdoors, use an  
extension cord suitable for outdoor use. Use of  
a cord suitable for outdoor use reduces the risk of  
electric shock.  
18. Do not use the power tool if the switch does  
not turn it on and off. Any power tool that cannot  
be controlled with the switch is dangerous and  
must be repaired.  
19. Disconnect the plug from the power source  
and/or the battery pack from the power tool  
before making any adjustments, changing  
accessories, or storing power tools. Such  
preventive safety measures reduce the risk of  
starting the power tool accidentally.  
20. Store idle power tools out of the reach of  
children and do not allow persons unfamiliar  
with the power tool or these instructions to  
operate the power tool. Power tools are  
dangerous in the hands of untrained users.  
21. Maintain power tools. Check for misalignment  
or binding of moving parts, breakage of parts  
and any other condition that may affect the  
power tool’s operation. If damaged, have the  
power tool repaired before use. Many accidents  
are caused by poorly maintained power tools.  
22. Keep cutting tools sharp and clean. Properly  
maintained cutting tools with sharp cutting edges  
are less likely to bind and are easier to control.  
23. Use the power tool, accessories and tool bits  
etc. in accordance with these instructions,  
taking into account the working conditions  
and the work to be performed. Use of the power  
tool for operations different from those intended  
could result in a hazardous situation.  
If operating a power tool in a damp location is  
unavoidable, use  
a
ground fault circuit  
interrupter (GFCI) protected supply. Use of an  
GFCI reduces the risk of electric shock.  
Personal safety  
10. Stay alert, watch what you are doing and use  
common sense when operating a power tool.  
Do not use a power tool while you are tired or  
under the influence of drugs, alcohol or  
medication.  
A
moment of inattention while  
operating power tools may result in serious  
personal injury.  
11. Use personal protective equipment. Always  
wear eye protection. Protective equipment such  
as dust mask, non-skid safety shoes, hard hat, or  
hearing protection used for appropriate conditions  
will reduce personal injuries.  
12. Prevent unintentional starting. Ensure the  
switch is in the off-position before connecting  
to power source and/or battery pack, picking  
up or carrying the tool. Carrying power tools with  
your finger on the switch or energising power tools  
that have the switch on invites accidents.  
13. Remove any adjusting key or wrench before  
turning the power tool on. A wrench or a key left  
attached to a rotating part of the power tool may  
result in personal injury.  
Battery tool use and care  
14. Do not overreach. Keep proper footing and  
balance at all times. This enables better control  
of the power tool in unexpected situations.  
15. Dress properly. Do not wear loose clothing or  
jewellery. Keep your hair, clothing, and gloves  
away from moving parts. Loose clothes,  
jewellery or long hair can be caught in moving  
parts.  
16. If devices are provided for the connection of  
dust extraction and collection facilities,  
ensure these are connected and properly  
used. Use of dust collection can reduce  
dust-related hazards.  
24. Recharge only with the charger specified by  
the manufacturer. A charger that is suitable for  
one type of battery pack may create a risk of fire  
when used with another battery pack.  
25. Use power tools only with specifically  
designated battery packs. Use of any other  
battery packs may create a risk of injury and fire.  
26. 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 make a connection from one  
terminal to another. Shorting the battery  
terminals together may cause burns or a fire.  
27. Under abusive conditions, liquid may be  
ejected from the battery; avoid contact. If  
contact accidentally occurs, flush with water. If  
liquid contacts eyes, additionally seek medical  
help. Liquid ejected from the battery may cause  
irritation or burns.  
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Service  
position yourself and bystanders away from  
the plane of the rotating accessory and run the  
power tool at maximum no-load speed for one  
minute. Damaged accessories will normally break  
apart during this test time.  
28. Have your power tool serviced by a qualified  
repair person using only identical replacement  
parts. This will ensure that the safety of the power  
tool is maintained.  
29. Follow instruction for lubricating and  
changing accessories.  
30. Keep handles dry, clean and free from oil and  
8.  
Wear  
personal  
protective  
equipment.  
Depending on application, use face shield,  
safety goggles or safety glasses. As  
appropriate, wear dust mask, hearing  
protectors, gloves and workshop apron  
capable of stopping small abrasive or  
workpiece fragments. The eye protection must  
be capable of stopping flying debris generated by  
various operations . The dust mask or respirator  
must be capable of filtrating particles generated by  
your operation. Prolonged exposure to high  
intensity noise may cause hearing loss.  
Keep bystanders a safe distance away from  
work area. Anyone entering the work area  
must wear personal protective equipment.  
Fragments of workpiece or of a broken accessory  
may fly away and cause injury beyond immediate  
area of operation.  
grease.  
GEB059-2  
CORDLESS GRINDER SAFETY  
WARNINGS  
Safety Warnings Common for Grinding, Sanding,  
Wire Brushing, or Abrasive Cutting-Off Operations:  
1.  
This power tool is intended to function as a  
grinder, sander, wire brush or cut-off tool.  
Read all safety warnings, instructions,  
illustrations and specifications provided with  
this power tool. Failure to follow all instructions  
listed below may result in electric shock, fire  
and/or serious injury.  
9.  
2.  
3.  
Operations such as polishing are not  
recommended to be performed with this power  
tool. Operations for which the power tool was not  
designed may create a hazard and cause personal  
injury.  
Do not use accessories which are not  
specifically designed and recommended by  
the tool manufacturer. Just because the  
accessory can be attached to your power tool, it  
does not assure safe operation.  
10. Hold power tool by insulated gripping  
surfaces only, when performing an operation  
where the cutting accessory may contact  
hidden wiring. Cutting accessory contacting a  
"live" wire may make exposed metal parts of the  
power tool "live" and shock the operator.  
11. Position the cord clear of the spinning  
accessory. If you lose control, the cord may be cut  
or snagged and your hand or arm may be pulled  
into the spinning accessory.  
12. Never lay the power tool down until the  
accessory has come to a complete stop. The  
spinning accessory may grab the surface and pull  
the power tool out of your control.  
13. Do not run the power tool while carrying it at  
your side. Accidental contact with the spinning  
accessory could snag your clothing, pulling the  
accessory into your body.  
4.  
5.  
The rated speed of the accessory must be at  
least equal to the maximum speed marked on  
the power tool. Accessories running faster than  
their rated speed can break and fly apart.  
The outside diameter and the thickness of  
your accessory must be within the capacity  
rating of your power tool. Incorrectly sized  
accessories cannot be adequately guarded or  
controlled.  
14. Regularly clean the power tool’s air vents. The  
motor’s fan will draw the dust inside the housing  
and excessive accumulation of powdered metal  
may cause electrical hazards.  
15. Do not operate the power tool near flammable  
materials. Sparks could ignite these materials.  
16. Do not use accessories that require liquid  
coolants. Using water or other liquid coolants may  
result in electrocution or shock.  
6.  
7.  
The arbour size of wheels, flanges, backing  
pads or any other accessory must properly fit  
the spindle of the power tool. Accessories with  
arbour holes that do not match the mounting  
hardware of the power tool will run out of balance,  
vibrate excessively and may cause loss of control.  
Do not use a damaged accessory. Before each  
use inspect the accessory such as abrasive  
wheels for chips and cracks, backing pad for  
cracks, tear or excess wear, wire brush for  
loose or cracked wires. If power tool or  
accessory is dropped, inspect for damage or  
install an undamaged accessory. After  
inspecting and installing an accessory,  
Kickback and Related Warnings  
Kickback is a sudden reaction to a pinched or snagged  
rotating wheel, backing pad, brush or any other  
accessory. Pinching or snagging causes rapid stalling of  
the rotating accessory which in turn causes the  
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uncontrolled power tool to be forced in the direction  
opposite of the accessory’s rotation at the point of the  
binding.  
d) Always use undamaged wheel flanges that  
are of correct size and shape for your selected  
wheel. Proper wheel flanges support the wheel  
thus reducing the possibility of wheel breakage.  
Flanges for cut-off wheels may be different from  
grinding wheel flanges.  
e) Do not use worn down wheels from larger  
power tools. Wheel intended for larger power tool  
is not suitable for the higher speed of a smaller tool  
and may burst.  
For example, if an abrasive wheel is snagged or pinched  
by the workpiece, the edge of the wheel that is entering  
into the pinch point can dig into the surface of the  
material causing the wheel to climb out or kick out. The  
wheel may either jump toward or away from the operator,  
depending on direction of the wheel’s movement at the  
point of pinching. Abrasive wheels may also break under  
these conditions.  
Kickback is the result of power tool misuse and/or  
incorrect operating procedures or conditions and can be  
avoided by taking proper precautions as given below.  
a) Maintain a firm grip on the power tool and  
position your body and arm to allow you to  
resist kickback forces. Always use auxiliary  
handle, if provided, for maximum control over  
kickback or torque reaction during start-up. The  
operator can control torque reactions or kickback  
forces, if proper precautions are taken.  
Additional Safety Warnings Specific for Abrasive  
Cutting-Off Operations:  
a) Do not “jam” the cut-off wheel or apply  
excessive pressure. Do not attempt to make an  
excessive depth of cut. Overstressing the wheel  
increases the loading and susceptibility to twisting  
or binding of the wheel in the cut and the possibility  
of kickback or wheel breakage.  
b) Do not position your body in line with and  
behind the rotating wheel. When the wheel, at the  
point of operation, is moving away from your body,  
the possible kickback may propel the spinning  
wheel and the power tool directly at you.  
c) When wheel is binding or when interrupting a  
cut for any reason, switch off the power tool  
and hold the power tool motionless until the  
wheel comes to a complete stop. Never attempt  
to remove the cut-off wheel from the cut while  
the wheel is in motion otherwise kickback may  
occur. Investigate and take corrective action to  
eliminate the cause of wheel binding  
d) Do not restart the cutting operation in the  
workpiece. Let the wheel reach full speed and  
carefully reenter the cut. The wheel may bind,  
walk up or kickback if the power tool is restarted in  
the workpiece.  
b) Never place your hand near the rotating  
accessory. Accessory may kickback over your  
hand.  
c) Do not position your body in the area where  
power tool will move if kickback occurs.  
Kickback will propel the tool in direction opposite to  
the wheel’s movement at the point of snagging.  
d) Use special care when working corners,  
sharp edges etc. Avoid bouncing and snagging  
the accessory. Corners, sharp edges or bouncing  
have a tendency to snag the rotating accessory and  
cause loss of control or kickback.  
e) Do not attach a saw chain woodcarving blade  
or toothed saw blade. Such blades create  
frequent kickback and loss of control  
Safety Warnings Specific for Grinding and Abrasive  
Cutting-Off Operations:  
e) Support panels or any oversized workpiece  
to minimize the risk of wheel pinching and  
kickback. Large workpieces tend to sag under  
their own weight. Supports must be placed under  
the workpiece near the line of cut and near the  
edge of the workpiece on both sides of the wheel.  
f) Use extra caution when making a “pocket  
cut” into existing walls or other blind areas. The  
protruding wheel may cut gas or water pipes,  
electrical wiring or objects that can cause kickback.  
Safety Warnings Specific for Sanding Operations:  
a) Do not use excessively oversized sanding  
a) Use only wheel types that are recommended  
for your power tool and the specific guard  
designed for the selected wheel. Wheels for  
which the power tool was not designed cannot be  
adequately guarded and are unsafe.  
b) The guard must be securely attached to the  
power tool and positioned for maximum safety,  
so the least amount of wheel is exposed  
towards the operator. The guard helps to protect  
operator from broken wheel fragments and  
accidental contact with wheel.  
disc  
paper.  
Follow  
manufacturers  
c) Wheels must be used only for recommended  
applications. For example: do not grind with  
the side of cut-off wheel. Abrasive cut-off wheels  
are intended for peripheral grinding, side forces  
applied to these wheels may cause them to shatter.  
recommendations, when selecting sanding  
paper. Larger sanding paper extending beyond the  
sanding pad presents a laceration hazard and may  
cause snagging, tearing of the disc or kickback.  
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Safety Warnings Specific for Wire Brushing  
Operations:  
32. Pay attention that the wheel continues to  
rotate after the tool is switched off.  
a) Be aware that wire bristles are thrown by the  
brush even during ordinary operation. Do not  
overstress the wires by applying excessive  
load to the brush. The wire bristles can easily  
penetrate light clothing and/or skin.  
b) If the use of a guard is recommended for wire  
brushing, do not allow interference of the wire  
wheel or brush with the guard. Wire wheel or  
brush may expand in diameter due to work load  
and centrifugal forces.  
33. If working place is extremely hot and humid, or  
badly polluted by conductive dust, use  
a
short-circuit breaker (30 mA) to assure  
operator safety.  
34. Do not use the tool on any materials  
containing asbestos.  
35. Do not use water or grinding lubricant.  
36. Ensure that ventilation openings are kept clear  
when working in dusty conditions. If it should  
become necessary to clear dust, first  
disconnect the tool from the mains supply  
Additional safety warnings:  
17. When using depressed centre grinding wheels,  
be sure to use only fiberglass-reinforced  
wheels.  
18. NEVER USE Stone Cup type wheels with this  
grinder. This grinder is not designed for these  
types of wheels and the use of such a product may  
result in serious personal injury.  
(
use non metallic objects  
)
and avoid  
damaging internal parts.  
37. When use cut-off wheel, always work with the  
dust collecting wheel guard required by  
domestic regulation.  
38. Cutting discs must not be subjected to any  
lateral pressure.  
19. Be careful not to damage the spindle, the  
flange (especially the installing surface) or the  
lock nut. Damage to these parts could result in  
wheel breakage.  
SAVE THESE INSTRUCTIONS.  
WARNING:  
20. Make sure the wheel is not contacting the  
workpiece before the switch is turned on.  
21. Before using the tool on an actual workpiece,  
let it run for a while. Watch for vibration or  
wobbling that could indicate poor installation  
or a poorly balanced wheel.  
22. Use the specified surface of the wheel to  
perform the grinding.  
23. Watch out for flying sparks. Hold the tool so  
that sparks fly away from you and other  
persons or flammable materials.  
DO NOT let comfort or familiarity with product  
(gained from repeated use) replace strict adherence  
to safety rules for the subject product. MISUSE or  
failure to follow the safety rules stated in this  
instruction manual may cause serious personal  
injury.  
ENC007-6  
IMPORTANT SAFETY  
INSTRUCTIONS  
24. Do not leave the tool running. Operate the tool  
only when hand-held.  
25. Do not touch the workpiece immediately after  
operation; it may be extremely hot and could  
burn your skin.  
FOR BATTERY CARTRIDGE  
1.  
Before using battery cartridge, read all  
instructions and cautionary markings on (1)  
battery charger, (2) battery, and (3) product  
using battery.  
26. Always be sure that the tool is switched off  
and unplugged or that the battery cartridge is  
removed before carrying out any work on the  
tool.  
27. Observe the instructions of the manufacturer  
for correct mounting and use of wheels.  
Handle and store wheels with care.  
28. Do not use separate reducing bushings or  
adaptors to adapt large hole abrasive wheels.  
29. Use only flanges specified for this tool.  
30. For tools intended to be fitted with threaded  
hole wheel, ensure that the thread in the wheel  
is long enough to accept the spindle length.  
31. Check that the workpiece is properly  
supported.  
2.  
3.  
Do not disassemble battery cartridge.  
If operating time has become excessively  
shorter, stop operating immediately. It may  
result in a risk of overheating, possible burns  
and even an explosion.  
If electrolyte gets into your eyes, rinse them  
out with clear water and seek medical  
attention right away. It may result in loss of  
your eyesight.  
4.  
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5.  
Do not short the battery cartridge:  
(1) Do not touch the terminals with any  
conductive material.  
FUNCTIONAL DESCRIPTION  
(2) Avoid storing battery cartridge in  
a
CAUTION:  
container with other metal objects such as  
nails, coins, etc.  
(3) Do not expose battery cartridge to water  
or rain.  
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  
A battery short can cause a large current flow,  
overheating, possible burns and even  
breakdown.  
a
1. Button  
2. Red part  
1
6.  
7.  
Do not store the tool and battery cartridge in  
locations where the temperature may reach or  
exceed 50 C (122 F).  
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.  
Be careful not to drop or strike battery.  
Do not use a damaged battery.  
3. Battery cartridge  
2
3
8.  
9.  
007215  
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.  
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.  
3.  
Never recharge  
cartridge.  
a
fully charged battery  
Overcharging shortens the battery service life.  
Charge the battery cartridge with room  
temperature at 10 C - 40 C (50 F - 104 F).  
Let a hot battery cartridge cool down before  
charging it.  
Do not use force when inserting the battery  
cartridge. If the cartridge does not slide in easily, it  
is not being inserted correctly.  
Shaft lock  
1. Shaft lock  
1
007216  
CAUTION:  
Never actuate the shaft lock when the spindle is  
moving. The tool may be damaged.  
Press the shaft lock to prevent spindle rotation when  
installing or removing accessories.  
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use.  
Switch action  
Accidental re-start preventive function  
Even if the battery cartridge is inserted on the  
tool with the slide switch in the "I (ON)"  
position, the tool does not start. At this time,  
the lamp flickers slowly and this shows that  
the accidental re-start preventive function is at  
work.  
1. Slide switch  
1
To start the tool, first slide the slide switch  
toward the "O (OFF)" position and then slide it  
toward the "I (ON)" position.  
007217  
CAUTION:  
ASSEMBLY  
Before inserting the battery cartridge into the tool,  
always check to see that the slide switch actuates  
properly and returns to the "OFF" position when the  
rear of the slide switch is depressed.  
CAUTION:  
Always be sure that the tool is switched off and the  
battery cartridge is removed before carrying out  
any work on the tool.  
To start the tool, slide the slide switch toward the "I (ON)"  
position. For continuous operation, press the front of the  
slide switch to lock it.  
Installing side grip (handle)  
To stop the tool, press the rear of the slide switch, then  
slide it toward the "O (OFF)" position.  
Indication lamp with multi function  
1. Indication lamp  
1
007225  
CAUTION:  
Always be sure that the side grip is installed  
securely before operation.  
007224  
Screw the side grip securely on the position of the tool as  
shown in the figure.  
Indication lamps are located in two positions.  
When the battery cartridge is inserted on the tool with the  
slide switch positioned in the "O (OFF)" position, the  
indication lamp flickers quickly for approximately one  
second. If it does not flicker so, the battery cartridge or  
indication lamp has broken.  
Installing or removing wheel guard (For  
depressed center wheel , multi disc / abrasive  
cut-off wheel , diamond wheel)  
For tool with locking screw type wheel guard  
Overload protection  
When the tool is overloaded, the indication  
lamp lights up. When the load on the tool is  
reduced, the lamp goes out.  
1. Wheel guard  
2. Bearing box  
3. Screw  
1
If the tool continues to be overloaded and the  
indication lamp continues to light up for  
approximately two seconds, the tool stops.  
This prevents the motor and its related parts  
from being damaged.  
2
3
In this case, to start the tool again, move the  
slide switch to the "O (OFF)" position once  
and then to the "I (ON)" position.  
007218  
WARNING:  
When using  
a
depressed center grinding  
Battery cartridge replacing signal  
wheel/Multi-disc, flex wheel, wire wheel brush,  
cut-off wheel or diamond wheel, the wheel guard  
must be fitted on the tool so that the closed side of  
When the remaining battery capacity gets  
small, the indicator lamp lights up during  
operation earlier than enough capacity battery  
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the guard always points toward the operator.  
OPERATION  
When using an abrasive cut-off / diamond wheel,  
be sure to use only the special wheel guard  
designed for use with cut-off wheels. (In European  
WARNING:  
countries, when using  
a
diamond wheel, the  
It should never be necessary to force the tool. The  
ordinary guard can be used.)  
weight of the tool applies adequate pressure.  
Forcing and excessive pressure could cause  
dangerous wheel breakage.  
ALWAYS replace wheel if tool is dropped while  
grinding.  
NEVER bang or hit grinding disc or wheel onto  
work.  
Avoid bouncing and snagging the wheel, especially  
when working corners, sharp edges etc. This can  
cause loss of control and kickback.  
Mount the wheel guard with the protrusion on the wheel  
guard band aligned with the notch on the bearing box.  
Then rotate the wheel guard to such an angle that it can  
protect the operator according to work. Be sure to tighten  
the screw securely.  
To remove wheel guard, follow the installation procedure  
in reverse.  
Installing or removing depressed center  
grinding wheel/Multi-disc  
NEVER use tool with wood cutting blades and other  
sawblades. Such blades when used on a grinder  
frequently kick and cause loss of control leading to  
personal injury.  
1. Lock nut  
2. Depressed  
center grinding  
1
2
wheel/Multi-disc  
3. Inner flange  
CAUTION:  
3
Make the depth of a single cut up to 5 mm. Adjust  
pressure on the tool so that the tool does not slow  
down during the operation.  
After operation, always switch off the tool and wait  
until the wheel has come to a complete stop before  
putting the tool down.  
If the tool is operated continuously until the battery  
cartridge has discharged, allow the tool to rest for  
15 minutes before proceeding with a fresh battery.  
007219  
WARNING:  
Always use supplied guard when depressed center  
grinding wheel/Multi-disc is on tool. Wheel can  
shatter during use and guard helps to reduce  
chances of personal injury.  
Grinding and sanding operation  
Mount the inner flange onto the spindle. Fit the  
wheel/disc on the inner flange and screw the lock nut  
onto the spindle.  
To tighten the lock nut, press the shaft lock firmly so that  
the spindle cannot revolve, then use the lock nut wrench  
and securely tighten clockwise.  
1. Lock nut wrench  
1
2
2. Shaft lock  
A
B
007221  
ALWAYS hold the tool firmly with one hand on housing  
and the other on the side handle. Turn the tool on and  
then apply the wheel or disc to the workpiece.  
In general, keep the edge of the wheel or disc at an angle  
of about 15 degrees to the workpiece surface.  
During the break-in period with a new wheel, do not work  
the grinder in the B direction or it will cut into the  
workpiece. Once the edge of the wheel has been  
rounded off by use, the wheel may be worked in both A  
and B direction.  
007220  
To remove the wheel, follow the installation procedure in  
reverse.  
WARNING:  
Only actuate the shaft lock when the spindle is not  
moving.  
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The direction for mounting the lock nut and the inner  
flange varies by wheel thickness.  
Refer to the table below.  
Operation with abrasive cut-off / diamond  
wheel (optional accessory)  
1. Lock nut  
1
2. Abrasive cut-off  
wheel/diamond  
2
wheel  
3
3. Inner flange  
4. Wheel guard for  
abrasive cut-off  
wheel/diamond  
wheel  
4
010855  
100 mm (4")  
Abrasive cut-off wheel  
Diamond wheel  
Thickness: Less than 4 mm (5/32")  
Thickness: 4 mm (5/32") or more  
Thickness: Less than 4 mm (5/32")  
Thickness: 4 mm (5/32") or more  
1
2
1
4
16 mm (5/8")  
16 mm (5/8")  
20 mm (13/16")  
20 mm (13/16")  
3
3
1. Lock nut  
2. Abrasive cut-off wheel  
3. Inner flange  
4. Diamond wheel  
Diamond wheel  
115 mm (4 - 1/2") / 125 mm (5")  
Abrasive cut-off wheel  
Thickness: Less than 4 mm (5/32")  
Thickness: 4 mm (5/32") or more  
Thickness: Less than 4 mm (5/32")  
Thickness: 4 mm (5/32") or more  
1
2
1
4
22.23 mm (7/8")  
22.23 mm (7/8")  
22.23 mm (7/8")  
22.23 mm (7/8")  
3
3
1. Lock nut  
2. Abrasive cut-off wheel  
3. Inner flange  
4. Diamond wheel  
010848  
NEVER use cut-off wheel for side grinding.  
Do not "jam" the wheel or apply excessive pressure.  
Do not attempt to make an excessive depth of cut.  
Overstressing the wheel increases the loading and  
susceptibility to twisting or binding of the wheel in  
the cut and the possibility of kickback, wheel  
breakage and overheating of the motor may occur.  
WARNING:  
When using an abrasive cut-off / diamond wheel,  
be sure to use only the special wheel guard  
designed for use with cut-off wheels. (In European  
countries, when using  
a
diamond wheel, the  
ordinary guard can be used.)  
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Do not start the cutting operation in the workpiece.  
Let the wheel reach full speed and carefully enter  
into the cut moving the tool forward over the  
workpiece surface. The wheel may bind, walk up  
or kickback if the power tool is started in the  
workpiece.  
1. Holder cap  
cover  
2. Screwdriver  
During cutting operations, never change the angle  
of the wheel. Placing side pressure on the cut-off  
wheel (as in grinding) will cause the wheel to crack  
and break, causing serious personal injury.  
A diamond wheel shall be operated perpendicular  
to the material being cut.  
2
1
007226  
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.  
MAINTENANCE  
1. Brush holder cap  
2. Screwdriver  
CAUTION:  
Always be sure that the tool is switched off and the  
battery cartridge is removed before attempting to  
perform inspection or maintenance.  
1
2
Never use gasoline, benzine, thinner, alcohol or the  
like. Discoloration, deformation or cracks may  
result.  
007223  
Reinstall the holder cap cover on the tool.  
To maintain product SAFETY and RELIABILITY, repairs,  
any other maintenance or adjustment should be  
performed by Makita Authorized Service Centers, always  
using Makita replacement parts.  
1. Exhaust vent  
1
2. Inhalation vent  
2
OPTIONAL ACCESSORIES  
CAUTION:  
007222  
These  
accessories  
or  
attachments  
are  
The tool and its air vents have to be kept clean. Regularly  
clean the tool's air vents or whenever the vents start to  
become obstructed.  
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. Only use accessory or  
attachment for its stated purpose.  
Replacing carbon brushes  
1. Limit mark  
If you need any assistance for more details regarding  
these accessories, ask your local Makita Service Center.  
Wheel guard (Wheel cover) For depressed center  
wheel / Multi disc  
Wheel guard (Wheel cover) For abrasive cut-off  
wheel / diamond wheel  
1
Depressed center wheels  
Abrasive cut-off wheels  
Multi discs  
Diamond wheels  
Wire cup brushes  
Wire bevel brush 85  
Abrasive discs  
Inner flange  
001145  
Remove and check the carbon brushes regularly.  
Replace when they wear down to the limit mark. Keep  
the carbon brushes clean and free to slip in the holders.  
Both carbon brushes should be replaced at the same  
time. Use only identical carbon brushes.  
Insert the top end of slotted bit screwdriver into the notch  
in the tool and remove the holder cap cover by lifting it  
up.  
Lock nut For depressed center wheel / abrasive  
cut-off wheel / multi disc / diamond wheel  
Lock nut For abrasive disc  
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Lock nut wrench  
Side grip  
Various type of Makita genuine batteries and  
chargers  
NOTE:  
Some items in the list may be included in the tool  
package as standard accessories. They may differ  
from country to country.  
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Makita Corporation  
Anjo, Aichi, Japan  
884662H226  
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