Makita BO4900V User manual

INSTRUCTION MANUAL
Finishing Sander
BO4900V
BO4900
BO4901
ENGLISH: Original instructions
DOUBLE INSULATION
Read before use.

2ENGLISH
SPECIFICATIONS
Model BO4900V BO4900 BO4901
Pad size 115 mm x 229 mm 115 mm x 229 mm 115 mm x 229 mm
Abrasive paper size 115 mm x 280 mm 115 mm x 280 mm 115 mm x 280 mm
Orbits per minute (min-1)4,000 - 10,000 10,000 10,000
Sanding stroke rate (min-1)8,000 - 20,000 20,000 20,000
Overall length 289 mm 289 mm 289 mm
Net weight 2.9 kg 2.9 kg 2.8 kg
Safety class /II
• Due to our continuing program of research and development, the specications herein are subject to change without notice.
• Specications may differ from country to country.
• Weight according to EPTA-Procedure 01/2014
Symbols
The following show the symbols used for the equip-
ment. Be sure that you understand their meaning before
use.
Read instruction manual.
DOUBLE INSULATION
Only for EU countries
Do not dispose of electric equipment
together with household waste material!
In observance of the European Directive,
on Waste Electric and Electronic
Equipment and its implementation in
accordance with national law, electric
equipment that have reached the end of
their life must be collected separately and
returned to an environmentally compatible
recycling facility.
Intended use
The tool is intended for the sanding of large surface of
wood, plastic and metal materials as well as painted
surfaces.
Power supply
The tool should be connected only to a power supply
of the same voltage as indicated on the nameplate,
and can only be operated on single-phase AC supply.
They are double-insulated in accordance with European
Standard and can, therefore, also be used from sockets
without earth wire.
Noise
The typical A-weighted noise level determined accord-
ing to EN62841:
Sound pressure level (LpA) : 71 dB (A)
Uncertainty (K) : 3 dB (A)
The noise level under working may exceed 80 dB (A).
NOTE: The declared noise emission value(s) has
been measured in accordance with a standard test
method and may be used for comparing one tool with
another.
NOTE: The declared noise emission value(s)
may also be used in a preliminary assessment of
exposure.
WARNING: Wear ear protection.
WARNING: The noise emission during actual
use of the power tool can differ from the declared val-
ue(s) depending on the ways in which the tool is used
especially what kind of workpiece is processed.
WARNING: Be sure to identify safety measures
to protect the operator that are based on an estima-
tion of exposure in the actual conditions of use (tak-
ing account of all parts of the operating cycle such
as the times when the tool is switched off and when
it is running idle in addition to the trigger time).
Vibration
The vibration total value (tri-axial vector sum) deter-
mined according to EN62841:
Model BO4900,BO4900V
Work mode : sanding metal plate
Vibration emission (ah) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
Model BO4901
Work mode : sanding metal plate
Vibration emission (ah) : 4.0 m/s2
Uncertainty (K) : 1.5 m/s2
NOTE: The declared vibration total value(s) has been
measured in accordance with a standard test method
and may be used for comparing one tool with another.
NOTE: The declared vibration total value(s) may also
be used in a preliminary assessment of exposure.
WARNING: The vibration emission during actual
use of the power tool can differ from the declared val-
ue(s) depending on the ways in which the tool is used
especially what kind of workpiece is processed.
WARNING: Be sure to identify safety measures
to protect the operator that are based on an estima-
tion of exposure in the actual conditions of use (tak-
ing account of all parts of the operating cycle such
as the times when the tool is switched off and when
it is running idle in addition to the trigger time).
EC Declaration of Conformity
For European countries only
The EC declaration of conformity is included as Annex A
to this instruction manual.

3ENGLISH
General power tool safety warnings
WARNING: Read all safety warnings, instruc-
tions, illustrations and specications provided with this
power tool. Failure to follow all instructions listed below
may result in electric shock, re and/or serious injury.
Save all warnings and instruc-
tions for future reference.
The term "power tool" in the warnings refers to your mains-oper-
ated (corded) power tool or battery-operated (cordless) power tool.
Work area safety
1. Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
2. Do not operate power tools in explosive atmo-
spheres, such as in the presence of ammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.
Electrical safety
1.
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. Unmodied plugs and
matching outlets will reduce risk of electric shock.
2. Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of elec-
tric shock if your body is earthed or grounded.
3.
Do not expose power tools to rain or wet conditions. Water
entering a power tool will increase the risk of electric shock.
4. 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.
5.
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.
6. If operating a power tool in a damp location
is unavoidable, use a residual current device
(RCD) protected supply. Use of an RCD reduces
the risk of electric shock.
7.
Use of power supply via an RCD with a rated resid-
ual current of 30 mA or less is always recommended.
8. Power tools can produce electromagnetic elds
(EMF) that are not harmful to the user. However,
users of pacemakers and other similar medical
devices should contact the maker of their device and/
or doctor for advice before operating this power tool.
9. Do not touch the power plug with wet hands.
10. If the cord is damaged, have it replaced by the
manufacturer or his agent in order to avoid a
safety hazard.
Personal safety
1. 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 inuence of drugs, alcohol or med-
ication. A moment of inattention while operating
power tools may result in serious personal injury.
2.
Use personal protective equipment. Always wear eye
protection. Protective equipment such as a dust mask,
non-skid safety shoes, hard hat or hearing protection used
for appropriate conditions will reduce personal injuries.
3. 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 nger on the switch or energising
power tools that have the switch on invites accidents.
4. 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.
5. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
6. Dress properly. Do not wear loose clothing or
jewellery. Keep your hair and clothing away
from moving parts. Loose clothes, jewellery or
long hair can be caught in moving parts.
7. 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.
8.
Do not let familiarity gained from frequent use
of tools allow you to become complacent and
ignore tool safety principles. A careless action can
cause severe injury within a fraction of a second.
9. Always wear protective goggles to protect your eyes
from injury when using power tools.The goggles
must comply with ANSI Z87.1 in the USA, EN 166 in
Europe, or AS/NZS 1336 in Australia/New Zealand. In
Australia/New Zealand, it is legally required to wear
a face shield to protect your face, too.
It is an employer's responsibility to enforce
the use of appropriate safety protective equip-
ments by the tool operators and by other per-
sons in the immediate working area.
Power tool use and care
1.
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.
2. 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.
3. Disconnect the plug from the power source
and/or remove the battery pack, if detachable,
from the power tool before making any adjust-
ments, changing accessories, or storing power
tools. Such preventive safety measures reduce
the risk of starting the power tool accidentally.

4ENGLISH
4.
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.
5. Maintain power tools and accessories. Check for
misalignment or binding of moving parts, break-
age 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.
6. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
7.
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.
8. Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpected situations.
9. When using the tool, do not wear cloth work
gloves which may be entangled. The entangle-
ment of cloth work gloves in the moving parts may
result in personal injury.
Service
1.
Have your power tool serviced by a qualied repair
person using only identical replacement parts. This
will ensure that the safety of the power tool is maintained.
2. Follow instruction for lubricating and chang-
ing accessories.
SANDER SAFETY WARNINGS
1. Always use safety glasses or goggles. Ordinary
eye or sun glasses are NOT safety glasses.
2. Hold the tool rmly.
3. Do not leave the tool running. Operate the tool
only when hand-held.
4. This tool has not been waterproofed, so do not
use water on the workpiece surface.
5. Ventilate your work area adequately when you
perform sanding operations.
6. Some material contains chemicals which may
be toxic. Take caution to prevent dust inhala-
tion and skin contact. Follow material supplier
safety data.
7. Use of this tool to sand some products, paints
and wood could expose user to dust contain-
ing hazardous substances. Use appropriate
respiratory protection.
8. Be sure that there are no cracks or breakage
on the pad before use. Cracks or breakage
may cause a personal injury.
SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or familiar-
ity with product (gained from repeated use)
replace strict adherence to safety rules for
the subject product. MISUSE or failure to fol-
low the safety rules stated in this instruction
manual may cause serious personal injury.
FUNCTIONAL
DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function
on the tool.
Switch action
1
2
3
► 1. Speed adjusting dial 2. Lock button 3. Switch
trigger
CAUTION:
• Before plugging in the tool, always check to see
that the switch trigger actuates properly and
returns to the "OFF" position when released.
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
For continuous operation, pull the switch trigger and
then push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
Speed adjusting dial
For BO4900V only
CAUTION:
• If the tool is operated continuously at low
speeds, the motor will get overloaded and
heated up.
• The speed adjusting dial can be turned only as
far as 5 and back to 1. Do not force it past 5 or
1, or the speed adjusting function may no longer
work.
The tool speed can be innitely adjusted between 4,000
and 10,000 orbits per minute by turning the speed
adjusting dial, which is marked 1 to 5. Higher speed is
obtained when the dial is turned in the direction of num-
ber 5, lower speed is obtained when it is turned in the
direction of number 1. Adjust the desired tool speed for
the kind of work.

5ENGLISH
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Installing or removing abrasive
paper
For conventional type of abrasive
paper with pre-punched holes
(standard equipment):
Turn the clamp lever counterclockwise. Insert the paper
end into the clamper, aligning the holes in the paper
with those in the pad. Then return the clamp lever to the
original position to secure the paper. Repeat the same
process for the other end of the tool, maintaining the
proper paper tension.
1
23
► 1. Clamp lever 2. Conventional type of abrasive
paper with pre-punched holes 3. Pad for conven-
tional type of abrasive paper
For conventional type of abrasive
paper without pre-punched holes
(accessory):
Turn the clamp lever counterclockwise. Insert the paper
end into the clamper, aligning the paper edges even
and parallel with the sides of the base. Then return the
clamp lever to the original position to secure the paper.
Repeat the same process for the other end of the tool,
maintaining the proper paper tension.
Place the punch plate (optional accessory) over the
paper so that the guide of the punch plate is ush with
the sides of the pad. Then press the punch plate to
make holes in the paper.
1
2
► 1. Punch plate 2. Conventional type of abrasive
paper without pre-punched holes
For hook-and-loop type of abrasive
paper with pre-punched holes
(accessory):
Remove all dirt or foreign matter from the pad. Attach
the paper to the pad, aligning the holes in the paper with
those in the pad.
1
2
► 1. Hook-and-loop type of abrasive paper with pre-
punched holes 2. Pad for hook-and-loop type of
abrasive paper
CAUTION:
• Never use pressure-sensitive abrasive paper.
For BO4901 only
1
23
► 1. Pad 2. Screws 3. Screwdriver

6ENGLISH
NOTE:
• To use the hook-and-loop type of abrasive
paper, rst replace the pad. Remove the pad for
the conventional type of abrasive paper from the
tool with a screwdriver.
Install the pad for the hook-and-loop type of
abrasive paper (optional accessory) on the tool.
Tighten the screws rmly to secure the pad.
Installing paper dust bag
(accessory)
For BO4900, BO4900V only
Place the paper dust bag on the paper dust bag holder
with its front side upward. Insert the front xing card-
board of the paper dust bag into the groove of the paper
dust bag holder.
1
2
3
► 1. Groove 2. Front xing cardboard 3. Paper dust
bag
Then press the upper part of the front xing card-board
in arrow direction to hook it onto the claws.
1
2
► 1. Claws 2. Upper part
Insert the notch of the paper dust bag into the guide of
the paper dust bag holder. Then install the paper dust
bag holder set on the tool.
1
2
► 1. Guide 2. Notch
Installing dust bag (accessory)
For BO4900, BO4900V only
Install the dust bag on the tool so that the arrow with
"UP" indicated on the dust nozzle points upward.

7ENGLISH
Emptying dust bag
When the dust bag is about half full, switch off and
unplug the tool. Hold the tool and remove the dust bag
from the dust nozzle while pressing the push button.
1
► 1. Push button
1
2
3
4
► 1. Dust nozzle 2. Hook 3. Dust bag 4. Push button
After emptying the dust bag, insert the hook on the
dust nozzle into the rectangular hole on one side of the
dust bag frame until it clicks into place on the oush the
button.
Connecting to vacuum cleaner
When you wish to perform cleaner operation, connect a
vacuum cleaner to your tool. Connect a hose of vacuum
cleaner to the dust nozzle.
OPERATION
CAUTION:
• Never run the tool without the abrasive paper.
You may seriously damage the pad.
• Never force the tool. Excessive pressure may
decrease the sanding efciency, damage the
abrasive paper and/or shorten tool life.
• The front grip is a screwed type one. Always
be sure that the front grip is tightened securely
before operation.
Turn the tool on and wait until it attains full speed. Then
gently place the tool on the workpiece surface. Keep the
base ush with the workpiece and apply a light pressure
on the tool.

MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspec-
tion or maintenance.
• Never use gasoline, benzine, thinner, alcohol
or the like. Discoloration, deformation or cracks
may result.
To maintain product SAFETY and RELIABILITY,
repairs, carbon brush inspection and replacement, any
other maintenance or adjustment should be performed
by Makita Authorized Service Centers, always using
Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
•
These accessories or attachments are recom-
mended for use with your Makita tool specied in this
manual. The use of any other accessories or attach-
ments might present a risk of injury to persons. Only
use accessory or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Abrasive paper (with pre-punched holes)
• Abrasive paper (without pre-punched holes)
• Hook-and-loop type of abrasive paper
• Joint
• Dust bag and dust nozzle
• Paper dust bag
• Paper dust bag holder
• Dust bag
• Punch plate
•
Pad (For use with hook-and-loop type of abrasive paper)
NOTE:
• Some items in the list may be included in the
tool package as standard accessories. They
may differ from country to country.
www.makita.com
Makita Europe N.V.
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi 446-8502 Japa
n
Jan-Baptist Vinkstraat 2,
3070 Kortenberg, Belgium
884420H220
EN
20190410