Makita BO3710 User manual

1
ENGLISH (Original instructions)
INSTRUCTION MANUAL
DOUBLE INSULATION
Finishing Sander
BO3710
BO3711
010213
IMPORTANT: Read Before Using.

2
ENGLISH (Original instructions)
SPECIFICATIONS
Model BO3710 BO3711
Pad size 93 mm x 185 mm
Abrasive paper size 93 mm x 228 mm
Orbits per minute (min-1) 11,000 4,000 - 11,000
Overall length 253 mm
Net weight 1.6 kg
Safety class /II
• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003
END201-5
Symbols
The following show the symbols used for the equipment.
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 European Directive
2002/96/EC 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.
ENE052-1
Intended use
The tool is intended for the sanding of large surface of
wood, plastic and metal materials as well as painted
surfaces.
ENF002-1
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.
ENG104-1
For European countries only
Noise
The typical A-weighted noise level determined according
to EN60745:
Sound pressure level (LpA) : 72 dB (A)
Uncertainty (K) : 3 dB (A)
The noise level under working may exceed 80 dB (A).
Wear ear protection.
ENG211-2
Vibration
The vibration total value (tri-axial vector sum)
determined according to EN60745:
Work mode : sanding metal plate
Vibration emission (ah) : 3.5 m/s2
Uncertainty (K) : 1.5 m/s2
ENG901-1
• 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.
WARNING:
• 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
is running idle in addition to the trigger time).
ENH101-17
For European countries only
EC Declaration of Conformity
Makita declares that the following Machine(s):
Designation of Machine:
Finishing Sander
Model No./ Type: BO3710,BO3711
Conforms to the following European Directives:
2006/42/EC
They are manufactured in accordance with the following
standard or standardized documents:
EN60745
The technical file in accordance with 2006/42/EC is
available from:
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium

3
31.12.2013
000331
Yasushi Fukaya
Director
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium
GEA005-3
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.
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.
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
atmospheres, such as in the presence of
flammable 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
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. 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.
6. Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
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.
8. 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.
9. 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.
10. Use of power supply via a RCD with a rated
residual current of 30mA or less is always
recommended.
Personal safety
11.
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.
12. 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.
13. 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.
14. 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.
15. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
16.
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.
17. 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.
Power tool use and care
18. 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.
19. 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.
20. 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.

4
21. 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.
22. 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.
23. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
24. 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.
Service
25. 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.
26. Follow instruction for lubricating and
changing accessories.
27. Keep handles dry, clean and free from oil and
grease.
GEB021-3
SANDER SAFETY WARNINGS
DO NOT let comfort or familiarity with product (gained
from repeated use) replace strict adherence to safety rules
for the subject product. If you use this tool unsafely or
incorrectly, you can suffer serious personal injury.
1. Always use safety glasses or goggles. Ordinary
eye or sun glasses are NOT safety glasses.
2. Hold the tool firmly.
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
inhalation 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
containing 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:
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.

5
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
010214
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 BO3711 only
1
010226
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 infinitely adjusted between 4,000
and 11,000 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
number 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.
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):
11
22
010216
Press down the clamp lever (1 in the figure) and with the
clamp lever pressed down slide it toward the tool (2 in
the figure) and the clamper will be released.
Insert the paper end between a clamper and the pad
aligning the holes in the paper with those in pad. Then
return the clamp lever to the original position to secure it.
Release the other clamp lever by repeating the same
procedure.
While pulling abrasive paper to maintain the proper
tension, insert and secure the other end of abrasive
paper between another clamper and the pad and return
the clamp lever to the original position.
To remove the paper, release the clamper as stated
above.
For conventional type of abrasive paper without
pre-punched holes (available on the market):
1
2
010224
Press down the clamp lever 1 and with the clamp lever
pressed down slide it toward the tool 2 and the clamper
will be released.
Insert the paper end between a clamper and the pad
aligning the paper edges even and parallel with the sides
of the base. Then return the clamp lever to the original
position to secure it.
Release the other clamp lever by repeating the same
procedure.
1. Punch plate
2. Abrasive paper
without
pre-punched
holes
1. Speed adjusting
dial
1. Lock button
2. Switch trigger

6
While pulling abrasive paper to maintain the proper
tension, insert and secure the other end of abrasive
paper between another clamper and the pad and return
the paper clamp lever to the original position.
Place the punch plate (optional accessory) over the
paper so that the guide of the punch plate is flush with
the sides of the base. Then press the punch plate to
make holes in the paper.
To remove the paper, release the clamper as stated above.
For hook-and-loop type of abrasive paper with
pre-punched holes (optional accessory):
CAUTION:
• Always use hook-and-loop type of abrasive papers.
Never use pressure-sensitive abrasive paper.
1
2
010218
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 firmly to secure the pad.
1
2
010217
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
010225
CAUTION:
• When removing the pad, O ring may come out of
the tool. When this occurs, return the O ring to the
original position and then install the pad.
Dust bag (optional accessory)
12
010219
Attach the dust bag onto the dust spout. The dust spout
is tapered. When attaching the dust bag, push it onto the
dust spout firmly as far as it will go to prevent it from
coming off during operation.
For the best results, empty the dust bag when it
becomes approximately half full, tapping it lightly to
remove as much dust as possible.
Installing filter (Optional accessory)
1
009094
Make sure that the logo on the cardboard lip and the logo on
the dust box are on the same side, then install the filter by
fitting the cardboard lip in the groove of each holding tab.
1
2
009095
Make sure that the logo on the cardboard lip and the logo on
the dust nozzle are on the same side, then install the dust
nozzle on the dust box. Removing dust box and filter.
12
009092
Remove the dust nozzle by pushing the two latches.
1. Latch
2. Dust nozzle
1. Dust box
2. Dust nozzle
1. Holding tab
1. Dust spout
2. Dust bag
1. O-ring
1. Abrasive paper
2. Pad
1. Screwdriver
2. Screw

7
009093
Remove the filter first by pinching the logo side of its
cardboard lip, then by pulling the cardboard lip
downwards to move it out of the holding tab of the dust
box.
OPERATION
Sanding operation
010222
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 efficiency, damage the
abrasive paper or shorten tool life.
Hold the tool firmly. Turn the tool on and wait until it
attains full speed. Then gently place the tool on the
workpiece surface. Keep the pad flush with the
workpiece and apply slight pressure on the tool.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection
or maintenance.
NOTICE:
• 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
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.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Abrasive paper (with pre-punched holes)
• Hook-and-loop type of abrasive paper
• Punch plate
• Backing pad (For use with hook-and-loop type of
abrasive paper)
• Backing pad (For use with conventional type of
abrasive paper)
• Dust bag
• Dust box
• Filter
• Hose
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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www.makita.com
Makita Jan-Baptist Vinkstraat 2, 3070, Belgium
Makita Corporation Anjo, Aichi, Japan
884911D221