Makita 90471 User manual

Angle Grinder
Overall length
No load speed
(RPM)
180 mm (7”) MODEL 90471.
230 mm (9”) MODEL 9049
INSTRUCTION MANUAL
Net weight Spindle thread
DOUBLE
INSULATION
6,000 I 470 mm (18-112“) I 4.8 kg (10.6 Ibs) I 5/8”-11 UNC
* Manufacturer reserves the right to change specifications without notice.
* Note: Specifications may differ from country to country.
WARNING: For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

GENERAL SAFETY RULES
(For All Tools)
WARNING! Read and understand all instructions. Failure
tofollow all instructions listed below, may result
in electric
shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
READ ALL INSTRUCTIONS.
1. Keep your work area clean and well lit. Cluttered benchesand dark areas invite
accidents.
2. Do not operate powertools in explosive atmospheres, suchas in the presence
of flammable liquids, gases, or dust. Power tools create sparks which may
ignite the dust or fumes.
3. Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to loose control.
4. DoubleInsulatedtoolsare equippedwithapolarizedplug(onebladeiswider
than the other.) This plug will
fit in a polarizedoutlet only one way. If the
plug does not fit fully
in the outlet, reverse the plug. If it still does not fit,
contact a qualified electrician to install a polarizedoutlet. Do not change
the plug in any way. Double insulation H eliminates the need for the three
wire grounded power cord and grounded power supply system.
5. Avoid bodycontact withgroundedsurfaces suchas pipes, radiators, ranges
and refrigerators. There is an increased risk
of electric shock if your body is
grounded.
6. Don't expose powertools to rain or wet conditions. Water enteringa power
tool will increase the risk
of electric shock.
7. Donot abuse the cord. Never use the cordtocarry the tools or pullthe plug
from anoutlet. Keep cord away from heat, oil, sharpedges or movingparts.
Replace damaged cords immediately. Damaged cords increase the risk of
electric shock.
8. Whenoperatingapowertooloutside, useanoutdoorextensioncordmarked
"W-A" or "W." These cords are rated for outdoor use and reduce the risk
of electric shock.
9. Stayalert, watch what youare doingand use commonsensewhen operating
a power tool. Do not use tool while tired or under the influence of drugs,
alcohol, or medication.
A moment of inattentionwhile operating power tools
may result in serious personal injury.
IO. Dressproperly. Donot wear looseclothingor jewelry. Containlonghair. Keep
your hair, clothing, and glovesaway from movingparts. Looseclothes, jewelry
or long hair can be caught in moving parts.
2

11. Avoid accidental starting. Be sure switchisoff before plugging in. Carrying
tools with your finger onthe switch or plugging intools that have the switch
on invites accidents.
12. Remove adjusting keys or switches before turning the tool on. A wrench or
a key that is left attachedto a rotating part of the tool may result in personal
injury.
13. Donotoverreach. Keepproperfootingandbalanceatalltimes. Proper footing
and balance enables better control
of the tool in unexpected situations.
14. Use safety equipment. Always wear eye protection. Dust mask, nonskid
safety shoes, hard hat, or hearing protection must be used for appropriate
conditions.
15. Use clamps or other practical way tosecure and support the workpiece to
astable platform. Holding the work by hand or against your body is unstable
and may lead to
loss of control.
16. Donot force tool. Usethe correct tool for your application. The correct tool
will do the job better and safer at the rate for which
it is designed.
17. Do not use tool if switch does not turn it on or off. Any tool that cannot
be controlled with the switch is dangerous and must be repaired.
18. Disconnectthe plugfrom the power source beforemakingany adjustments,
changing accessories, or storing the tool. Such preventive safety measures
reduce the risk of starting the tool accidentally.
19. Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
20. Maintain tools with care. Keep cutting tools sharp and clean. Properly
maintainedtools, with sharp cuttingedges are less likelyto bind and are easier
to control.
21. Check for misalignment or binding of moving parts, breakage of parts, and
any other condition that may affect the tools operation. If damaged, have
the toolservice before using. Many accidents are caused by poorly maintained
tools.
22. Use only accessories that are recommended by the manufacturer for your
model. Accessories that may be suitable for one tool, may becomehazardous
when used on another tool.
23.
Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of
injury.
24. Whenservicing atool, use only identicalreplacement parts. Follow instruc-
tions
in the Maintenance section of this manual. Use of unauthorized parts
or failureto follow MaintenanceInstructions may create
a risk of electricshock
of injury.
3

Specific Safety Rules
1. Always useproperguard with grinding wheel. A guard protectsoperator from
broken wheel fragments.
2. Accessories must be rated for at last the speed recommended on the tool
warning label. Wheels and other accessories running over rated speed can
fly apart and cause injury.
3. Holdtoolby insulated gripping surfaces when performinganoperation where
the cutting tool may contact hidden wiring or its own cord. Contact with
a "live" wire
will make exposed metal parts of the tool "live" and shock the
operator.
4. Keep guards in place.
5. Useonly wheels havinga maximumoperating speedatleast ashighas "No
LoadRPM" marked on the tool's nameplate. When using depressed center
wheels, be sure to use only fiberglass-reinforced wheels.
6. Check the wheel carefully for cracks or damage before operation. Replace
cracked or damaged wheel immediately.
7. Use only flanges specified for this tool.
8. 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.
9. Hold the tool firmly.
IO. Keep hands away from rotating parts.
11. Make sure the wheel is not contacting the workpiece before the switch is
turned on.
12. 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.
13. Use the specified surface of the wheel to perform the grinding.
14. Watch out for flying sparks. Holdthetool so that sparks fly away from you
15. Do not leave the tool running. Operate the tool only when hand-held.
16. Donottouch the workpiece immediately after operation; it maybeextremely
and other persons or flammable materials.
hot and could burn your skin.
SAVE THESE INSTRUCTIONS.
4

SYMBOLS
The followings show the symbols used for tool.
........................... volts
................................. amperes
................................. herts
................................. kilograms
...... . . hours
................................. minutes
....... seconds
........................... alternating current
................... direct current
................. no load speed
alternating or direct current
................................. Class II Construction
................................. splash-proof construction
...................... watertight construction
...............
revolutions or reciprocation per minute
................................. number of blow
U
5

Installing wheel guard
When using a depressed center wheel or an
abrasive cut-off wheel, always use a wheel
guard. Mount the wheel guard withthe tab
on the wheel guard band aligned with the
notch on the bearing box Then rotate the
wheel guard
160 degrees counterclockwise.
Be sure to tighten the screw securely.
Installing side grip (auxiliary handle)
Always install the side grip on the tool
securely before operation. The side grip can
be installed
in any of three positions on the
sides of the tool, whichever is convenient
and keeps the guard properly positioned.
Always holdthetool's switch handle and the
side grip firmly with both hands during
operation.
r------ ,-Wheel guard
WARNIN G :
Side grip only in such a way that grinding wheel will not contact any part of your body
and that wheel guard always remains positioned as a barrier between the grinding wheel
and the operator. Failure to do
so may result in serious injury.
6

Installing or removing depressed center wheel
CAUTION:
Always be sure that the tool
is switched off and unplugged before installing or removing
the wheel.
To tighten the lock nut, pressthe shaft lock
firmly
so that the spindle cannot revolve,
then use the lock nut wrench and securely
Mount the inner flange onto the spindle. Fit
the wheel onover the inner flange and screw
the lock nut onto the spindle.
Lock nut wrench-
tighten clockwise.
To remove the wheel, follow the installation
procedure in reverse
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 lever.
To stop the tool from the
locked position, pull the trigger fully, then
release
it.
L
I Shaft lock 2
Lock lever
CAUTION :
Before plugging in the tool, always check to see that the switch trigger actuates properly
and returns to the "OFF" position when released.
7

Operation
Holdthe tool firmly. Turn the tool on and then
apply the wheel or disc to the workpiece.
Ingeneral, keep the edge of the wheel or disc
at an angle of about 15O to the workpiece
surface.
Duringthe break-inperiod with a new wheel,
do not work the grinder inthe
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
directions.
WARN I NG :
I
It should never be necessary to force the tool. The weight of the tool applies adequate
pressure. Forcing and excessive pressure could cause dangerous wheel breakage.
Continued use of a worn-out wheel may result in wheel explosion and serious personal
injury. Depressed center wheel should not be used after
it has been worn down to
115
mm (4-1/2") in diameter. Use of the wheel after this point is unsafe and it should
be removed from service and rendered unusable by intentional destruction.
8

MAINTENANCE
CAUTl ON:
Always be sure that the tool is switched off and unplugged before attempting to perform
inspection or maintenance.
Replacing carbon brushes
When the resin insulating tip inside the
carbon brush
is exposed to contact the
commutator,
it will automatically shut off the
motor. When this occurs, both carbon
brushes should be replaced at the same time.
Use only identical carbon brushes.
Usea screwdriver toremove the brushholder
caps. Take out the worn carbon brushes,
insert the new ones and secure the brush
holder caps.
Insulating tip
7r
Commutator
-Carbon brush
1
Brush holder cap
To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjust-
ment should be performed by Makita Authorized or Factory Service Centers, always using
Makita replacement parts.
9

ACCESSORIES
CAUTION:
These accessories or attachments are recommended for use with your Makita tool specified inthis
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.
Part No.
741425-6
@Wheel guard
Grit Size (mm) For Model
24 ,7,!:qr; i 9047L
Part No.
@Depressed center wheel (1 Per pkg)
For Model
165191-5
164879-4
I 9049
9047L
741421-4
I 24 I ,,,?~~r46~
I 9049
@Inner flange
89
(For depressed center wheel)
Part
No. 224317-9
@Lock nut 518”- 40
(For depressed center wheel)
Part
No. 224509-0
10

@Rubber pad
Part No. 743012-7
741415-A
@Sanding lock nut 48
(For abrasive disc)
Part
No. 22451 7-1
A24R 9" x 114" x 518" 9049
@Wire cup brush
Part No. I Diameter lmml
~-1 743206-A 150 (6")
743206-E
@Urethane washer 14
Part No. 261039-0
When using wire brush, mount urethane washer
14to the spindle.
It will make it easier to remove
wire brush.
@Hubbed grinding wheel
Part No. I Grit I Size I For Model
741414-A I A24R I 7"x 114'x 518" I 90471
@Abrasive disc 15 per pkgl
Part No. I Grit I Diameter h"
742067-A-5 I 16 1
742069-A-5 I 24 I
742089-A-5
742070-A-5
742071-A-5 80
180(7")
742091-A-5
I 120 I
@Flexible grinding wheel (10 per pkg)
Part No. I Grit I Size lmml I Far Model
741442-6 I 60 I
w 741444-2 120
18Ox
3 x 22
17"
x 118" x 718")
lincludes one back up pad, @
Part No. 743027-4)
9047L
@Plastic pad
Part No. 743027-4
Lock nut wrench 28
Part No. 78241 2-6
Grip 36
Part No. 152539-0
11

No".-01 -'96 US
ANGLE GRINDER
180 mm (7") Model 9047L
230 mm (9") Model 9049
Note: The switch and other part configurations
may differ from country
to country.
12

MODEL 9047L, 9049 Nov.-01-'96 US
IFOM DESCRIPTION '2: DESCRIPTION
MACHINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
-
FIELD ASSEMBLY
Baffle Plate
Ball Bearing 6200DDW
Insulation Washer
ARMATURE ASSEMBLY
IWith Item 3. 4 & 61
Fan 80
Bearing Retainer 60
Ball Bearing 63OlDDW
Spiral Bevel Gear 12
Retaining Ring S-9
Tapping Screw. Flange. 5x35
PI" Cap
Compression Spring 12
Hex Socket Head Bolt M5x25
Pin 6
Gear Housing
Grip 36
Hex Socket Head Bolt M5x10
Nut M15-23
cup Spring 20
cup Sprrng 20
Lock Washer
Spiral Bevel Gear 53
Flat Washer 15
- MACHINE
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
-
1
1
1
1
1
1
1
1
4
1
2
2
1
1
1
1
1
2
4
1
1
2
1
1
-
Retaining Ring R-40
Ball Bearing 62030DW
Bearing Box
Spindle
Pan Head Screw M8x25
Wheel Cover
Inner Flange 89
Lock Nut 5/6-40
Tapping Screw CT 5x16
Makila Mark
Brush Holder Cap
Carbon Brush
Name Plate
Handle Set IWith Item 441
Cord Guard
Cord
Strain Relief
Tapping Screw 4x18
Tapping Screw. Flange. 4x25
Handle Set IWith Item 381
Switch
Tapping Screw Flange F'T 5x65
Makits Mark
Motor Housing Complete
Note: The switch and other part specifications may differ from country to country.
13

MAKITALIMITEDONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to
be free of defects from workmanshipand 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 inspectionshows
the trouble is caused by defective workmanship or material, Makita
will repair (or at our option,
replace) without charge.
ThisWarranty does not apply where:
repairs have been made or attempted by others:
repairs are required because of normal wear and tear:
e The tool has been abused, misused or improperly maintained ;
alterations have been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEQUENTIAL DAMAGES FROM THE SALE OR USE
OF THE PRODUCT. THIS DISCLAIMER
APPLIESBOTH 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 exclusion or limitation of incidentalor 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.
-
Makita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi 446 Japan
884082- 060
PRINTED IN JAPAN
1996 - 12 - N