Makita 9741 User manual

Wheel Slincien
Wheel size
(Diameter
x Width)
100 mm x 120 mm
(4” x 4.314”)
Equipped with Electric Brake
MODEL 9741
Net weight
4,2 kg (9,2 lbsl
No load speed Dimensions
(L x W x H)
310 mm x 185 mm x 182 mm
112-1/4” x 7-1/4” x 7-118”)
(RPM)
3,500
INSTRUCTION MANUAL
SPECIFICATIONS
Manufacturer reserves the right to change specifications without notice.
Note: Specifications may differ from country to country.

IMPORTANT
SAFETY INSTRUCTIONS
(For All Tools)
WARNING: WHEN USING ELECTRIC TOOLS, BASIC SAFE-
REDUCE THE RISK
OF FIRE, ELECTRIC SHOCK, AND PER-
TY PRECAUTIONS SHOULD ALWAYS
BE FOLLOWED TO
SONAL INJURY, INCLUDING THE FOLLOWING:
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 to rain.
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 IDLETOOLS. When not
in use, tools should be stored in dry, andhigh
or locked-up place
- out of reach of children.
DON'T FORCETOOL.
It willdothejob better and safer atthe ratefor which
it was intended.
USE RIGHT TOOL. Don't force small tool or attachment to do thejob of a
heavy-duty tool. Don't use tool for purpose not intended.
DRESS PROPERLY. Don't wear looseclothing orjewelry. 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. Nevercarry 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 ifdamaged, haverepairedby 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
in use, 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 keysand adjusting 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. When toolis usedoutdoors, use only
extension cords intended for use outdoors and
so marked.
17. STAY ALERT. Watch what youare doing, use commonsense. 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, bindingof 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, use only identicalreplacement parts.
VOLTAGE WARNING: Before connectingthe tool to a 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 to the 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

ADDITIONAL SAFETY RULES
1. Inspect for and remove foreign matter such as nails, screws, etc. from the
workpiece surface before operation.
2. Do not wear gloves during operation.
3. Hold the tool firmly with both hands.
4. Keep hands away from rotating parts.
5. Do not leave the tool running. Operate the tool only when hand-held.
6. Never attempt to use with the tool held upside down in a vise, etc.
SAVE THESE INSTRUCTIONS.
4

Removing or installingwheel
CAUTION
:
Always be sure that the tool is switched off and unplugged beforeremovingor installing
the wheel.
To remove the wheel, insert one hex
wrench into the end of the spindle and
another hex wrench into the end of the
output shaft. Turn the hex wrench in the
output shaftclockwisewhile securely hold-
ing the hex wrench in the spindle
so that
the wheel cannot revolve. Pull the output
shaft out from the wheel. Move the wheel
slightly away from the spindle and remove
the wheel from the tool.
CAUTION: The outputshaft has
a left hand thread.
To install the wheel, follow the removal
procedures in reverse. When installing
it,
be sure to align the notches in the wheel
with the pins on the spindle.
Adjustingfront roller
The front roller allows you to apply uni-
form pressure to the workpiece. To adjust
the front roller,
set the tool on a flat sur-
face and loosen the wing nut. Adjust the
front roller up or down until the clearance
distance
(D) is about 2 mm(5/64”).Tighten
the wing nutsecurely.
\ Front roller
5

Connecting todust collector
(Optional accessory)
The use of a dust collector makes sanding
operationsclean and dust collectioneasy.
To connect a dust collector, open the dust
port by sliding the cover plate up and in
a
clockwise direction. Attach the joint onto
the dust port. Now
a dust collector can be
connected tothis
tool.
CAUTION :
When notusing a dust collector, close the dust port opening with the cover plate.
Switch action
To start the tool, simply
pull the trigger.
Release the trigger to stop. For continuous
operation, pull the trigger and then push in
the lock button. To stop the tool from the
locked position, pull the trigger fully, then
release
it.
.
Trigger switch
I
CAUTION :
Before plugging in the tool, always check to see that the trigger swith actuates properly
and returnstothe
"OFF" position when released.
.
6

Operation
Hold the tool firmly with both hands on
the handle and the grip in front. Place the
tool on the workpiece surface and move
the tool gently forward and backward
while applyingslight downward pressure.
CAUTION
:
*The tool should not be in contact with the workpiece surface when you turn the tool
on or off. Damage to the tool or the workpiece surface and injury to the operator may
resu
I t.
Apply slight downward pressure only. Excessive pressure may decrease tool efficiency,
shorten wheel service lifeand possibly gouge the workpiece surface.
7

MAINTENANCE
CAUTION:
Always be sure that the tool
is switched off and unpluggedbefore attempting to perform
inspection or maintenance.
Replacingcarbon brushes
Remove and check the carbon brushes
regularly. Replace when they wear down
to the limitmark. Keep the carbon brushes
clean and free to slip in the holders. Both
carbon brushes should be replaced
at the
same time. Use only Makita carbonbrushes.
Limit mark
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.
To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or
adjustment should be performed
by Makita Authorized or Factory Service Centers,
always using Makita replacement parts.
8

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.
The accessories or attachments should be used only in the proper and intended manner.
Joint
Part No. 410899-9
Nylon brush wheel
Hex wrench
Part No. 783204-6
Part
No. Grit Width
794384-3 120mm (4-3/4")
If the sanding action of the nylon brush wheel begins to diminish, dress the wheel by sanding soft
wood for several minutes.
Cotton buff wheel 120
Part No. 794381-9
Wheel 120-40
Part No. 794380- 1
.
0 Wire brush wheel 120
Part No. 794382-7
9

WHEEL SANDER
Model 9741
Q
Note: The switch, noise suppressor and other part configurations
may differ from country to country.
10

MODEL 9741 om -28-'88 us
MACHINE
34
35
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$zD DESCRIPTION
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MACHINE
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61
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Pan Head Screw M5x2B
Gear Housing Cover
Rubber
Pin 4
Ball Bearing 6001LLB
Flat Washer 12
Helical Gear
53
Retaining Ring S - 15
Ball Bearing 6OOZDDW
Spindle
Key 4
Gear Housing
Pan Head Screw M5x14
Grip
Wheel
Bearing
Retainer 44
Ball Bearing 6003DDW
Countersunk Head
Screw M4x14
Insulation Washer
Ball Bearing 608LL8
Rubber
Pin 4
ARMATURE ASSEMBLY
[With
Item 18 19 & 21 - 241
Fan 68
Dust Seal 10
Ball Bearing 6000LLB
Rubber
Pin 4
Rubber
Pin 4
Rubber
Pin 6
Pan Head Screw M5x35
Ball Bearing 626
Rubber
Pin 4
Pan Head Screw M5x55
Ball Bearing 626
Gear 64
Wing
Nut M6
Flat Washer 6
Depth Guide
Stop Ring
E - 5
Name Plate
Brush Holder Cap
Carbon Brush
Pan Head Screw M4
Thin Washer 6
cover Plate
Wave Washer 15
Flat Washer 4
Ho"5lng
Cap
Square Neck Bolt M6x20
Front Roller
Pin 7
Plate
Arbor
Baffle Plate
Hex Bolt M5x60 [With Washerl
FIELD ASSEMBLY
Sleeve 6
Sleeve 6
Pan Head Screw M4x28 IWithWasherl
Handle Cover
Roller
Pan Head Screw M4x18 lWith Washer)
Strain Relief
Cord Guard
Cord
Switch
Switch Cover
sponge
Seal
Note' The switch and other part specifications may dlffer from country to country.
11

MAKITA LIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thorou ly inspected and tested before leavingthe factory. It is warranted to
be free of defects from workashipand materials for the period of ONE YEAR from the dateof
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 ServiceCenters. If inspection shows
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;
0 alterations have been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTALOR CON-
SEOUENTlAL DAMAGES FROM THE SALE OR
USE OFTHE PRODUCT.THIS DISCLAIMER
APPLIES BOTH 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 OFTHIS 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 limitation may not apply to you.
W
mautaFlArtklr = -,Ltd.
11-8.3-chome, Sumiyorhi-cho.Anjo, Aichi 446. Japan
88361 1 - 066 PRINTED IN JAPAN
1988-12-N