Makita 9503BH User manual

n
No load speed
(RPM)
10,000
115 mm (4-1/2”) MODEL 9503BH
Overall length Net weight Spindle thread
260 mm (10-114”) 2 kg (4.4 Ibs) 510”
INSTRUCTION MANUAL

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 torain.
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 shouldbe stored in dry, and high
or locked-up place
- out of reach of children.
DON'T FORCETOOL.
It will do thejobbetterandsafer at the ratefor which
it was intended.
USE RIGHT TOOL. Don't force small toolor attachment todo the job of a
heavy-duty tool. Don't use tool for purpose not intended.
DRESSPROPERLY. Don't wear looseclothingor jewelry. They canbe caught
in moving parts. Rubber gloves and non-skid footwear are recommended
when working outdoors. Wear protective hair coveringtocontain longhair.
USE SAFETY GLASSES. Also use face or dust mask
if cutting operation is
dusty.
DON'T ABUSE CORD. Never carry tool by cordor 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 lubricatingand changing acces-
sories. Inspecttoolcords periodicallyand
if damaged, haverepairedbyautho-
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, andwhenchang-
ing accessories, such as blades, bits, cutters.

14. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to
see that keysand adjusting wrenches are removedfromtool before turning
it on.
15. AVOID UNINTENTIONALSTARTING. Don't carry plugged-intoolwithfinger
on switch. Be sure switch is OFF when plugging in.
16. OUTDOOR USE EXTENSIONCORDS. Whentool is usedoutdoors, useonly
extension cords intended for use outdoors and
so marked.
17. STAY ALERT. Watch what you aredoing, usecommon sense. 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, breakageof parts, mounting, andany
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 indicatedelsewhere 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. Preventbody contact with grounded
surfaces. For example; pipes, radiators, ranges, refrigerator enclosures.
20. REPLACEMENTPARTS. When servicing, useonlyidenticalreplacementparts.
VOLTAGE WARNING: Before connectingthe tooltoa 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. Keep guards in place.
2. Useonly wheels havinga maximumoperatingspeedat leastas highas “No
LoadRPM” marked onthe tool‘s nameplate. When usingdepressed center
wheels, be sure to use only fiberglass-reinforced wheels.
3. Check the wheel carefully for cracks or damage before operation. Replace
cracked or damaged wheel immediately.
4. Use only flanges specified for this tool.
5. 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.
6. Hold the tool firmly.
7. Keep hands away from rotating parts.
8. Make sure the wheel is not contacting the workpiece before the switch is
turned on.
9. 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.
IO. Use the specified surface of the wheel to perform the grinding.
11. Watch out for flying sparks. Holdthe tool so that sparks fly away from you
12. Do not leave the tool running. Operate the tool only when hand-held.
13. Do nottouchthe workpiece immediately after operation; it may beextremely
and other persons or flammable materials.
.
hot and could burn your skin.
SAVE THESE INSTRUCTIONS.
4

Installingside grip (auxiliary handle)
5
Screw the side grip on the tool securely.
The side
grip can be installed on either side
of the tool, whichever
is convenient.
Installingor removingdepressedcenter wheel
CAUTION
:
Always be sure that the tool is switched off and unpluggedbefore installingor removing
the wheel.
Mount the inner flange onto the spindle.
Fitthe wheel
on over the inner flange and
screw the lock nut onto the spindle.
Depressed
center wheel
I
Inner flange
To tighten the lock nut, press the shaft
lock firmly
so that the spindle cannot re-
volve, then use the lock nut wrench and
securely tighten clockwise.
Lock
-
_.
nut
-
wrench
-
To removethewheel, follow the installation procedurein reverse.
5

Switchaction
Slide the slide switch forward to start, and
the switch will lock in the "ON" position.
To stop, lgihtly depress the rear of the
switch, and
it will return to the "OFF"
position.
CAUTION
:
Before plugging in the tool, always check
to
see that the switch actuates properly
and returns to the "OFF" position when
depressed.
Operation
Hold the tool firmly. Turn the tool on and
then apply the wheel or disc to the work-
piece.
In general, keep the edge of the wheel or
disc
at an angle of about 15' to the work-
piece 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 inboth A and Bdirections.
Slide switch
7
WARNING:
0 It should never be necessary to force the tool. The weight of the tool applies adequate
pressure. Forcingand excessive pressurecould cause dangerous wheel breakage.
.Continued use
of a worn-outwheel may result in wheel explosionand serious personal
injury. Depressed center wheel should not be used after
it has been worn down to
90 mm (3-1/2") in diameter. Use of the wheel after this point is unsafe and it should be
removed from service and rendered unusable by intentionaldestruction.
6

MAINTENANCE
CAUTION :
Always be sure that the tool is switched off and unplugged before attemptingtoperform
inspectionor maintenance.
Replacingcarbon brushes
Remove and check the carbon brushes
regularly. Replace when tehy wear down
to about
4.5 mm (3/16") or less. Keep the
carbon brushes clean and free toslip inthe
holders. Both carbon brushes should be
replaced
at the same time. Use only Makita
carbon brushes.
I
4.5 mm (3/16")
Use a screwdriver to remove the brush
holder caps. Take out the worn carbon
brushes, insert the new ones and secure
.
Brush holder cap
To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or
adjustment should be performed by Makita Authorized or Factory Service Centers,
always using Makitareplacement parts.
7

.
ACC ESSO R I ES
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 injuty to persons.
The accessories or attachments should be used only inthe proper and intended manner.
741423-0
741 424-8
@ Wheel cover
Part No. 164751-0
115
x 6 x 22 24
(4-1
12'' x 114" x 718") 36
@ Inner flange 82
Part No. 224178-7
794332-2
@ Depressedcenter wheels
60
115~17~22.2
(4-1
12'' 11116'' x 718'7
@ Lock nut 5/8-40
Part No. 224509-0
Part
NO. I Size Imm) I Grit
Part
No. I Size (mm) I Grit
8 Rubber pad 11 5
Part No. 743036-3
8

0 Abrasive discs
(10 disc per pkg)
Part
No.
@ Lock nut 5/8-48
(Forabrasive disc)
Part No. 224517-1
Grit
742082-
3
24
Grip 26
Part No. 273485-5
742083-1
742084-
9
742085-7
742086-5
0 Lock nutwrench 28
Part No. 782413-4
30
50
80
120
0 Steelcarryingcase
Part No. 823120-1
9

Oci -08'87 US
115 mm (4-1/2")
DISC GRINDER
Model 9503BH
Note: The switch and other part configurations
may differ from country
to country.
10

MODEL 9503BH
‘YE $iD DESCRIPTION
26
27
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30
31
32
33
34
35
36
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39
40
41
42
43
44
45
46
400
oct -08 ‘87 us
‘ktM AtD DESCRIPTION
1
2
2
1
2
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
MACHINE
~
1
2
3
4
5
6
7
8
9
10
11
12
15
16
17
19
20
21
22
23
24
25
4
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
2
1
1
2
1
4
-
Pan Head Screw M4xZO IWith Washer)
Spiral Bevel Gear 11
Ball Bearing 6000LB
Plate
Fan 60
ARMATURE ASSEMBLY
IWith Item 5
8 8 & 91
Hex Bolt M4x70 (With Washer)
InSUIetiOnWasher
Ball Bearing 627LB
FIELD ASSEMBLY
Motor
Housing
Rubber Pin 4
Pan Head Screw M4x60 [With Washer)
Cord
Rear Cover
Cord Guard
Pan Head Screw M4x8 IWiIhWasher]
Switch
Set Plate
Pan Head
Screw M4x14 With Washer)
Strain
Relief
Rivet 0-5
Name Plate
Brush Holder Cap
Carbon
Brush
Switch Holder
Pan Head Screw M4x18 IWith Washer)
Switch Lever
Woodruff Key 3
Gear Housing
Retaining Ring S- 12
Spiral Bevel Gear 36
Retaining
Ring R-32
Ball Bearing 6201LB
Flat Washer
12
Spindle
Fell
Ring 18
Bearing
Box
Pan Head Screw M4x14 IWith Washer)
Pan Head Screw M5x14 IWith Washer1
Wheel
Cover
Inner Flange 82
Lock Nut 5/8-40
Grip
26
Note The switch and other part specifications may dttter tram country to country
11

MAKITA LIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thorou ly inspected and tested before leaving the factory. Itis warranted to
be free of defects from worfkkshipand 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 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 doesnot apply where:
repairs have been made or attempted by others:
repairs are required because of normal wear and tear:
Thetool has been abused, misused or improperly maintained;
alterations have been made to the tool.
IN NO EVENT SHALL MAKUA BE LIABLE FOR ANY INDIRECT, INCIDENTALOR CON-
SEQUENTIAL DAMAGES FROM THE SALEOR USE OFTHE PRODUCT. THIS DISCLAIMER
APPLIES BOTH DURING AND AFTER THE TERM OFTHIS WARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED
WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,”
AFTER THE ONE-YEAR TERM 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 wrclusion or limitation of incidental or consequential
damages,
so the above limitatjon or exclusion may not apply to you. Some states do not allow
limitation
on how long an implled warranty lasts, so the abovelimitation may not apply to YOU.
maKitaueztkuc -
11-8,3-chome, Sumiyorhi-cho.Anjo, Aichi 446, Japan
883394A068 PRINTED IN JAPAN
1987
- 11 - N