Angle
Grinder
100
mm
(4”)
MODEL
INSTRUCTION MANUAL
N900
No
load speed Overall length Net weight
(RPM)
10,000
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
1
255
mm
(10”)
FOR
FUTURE REFERENCE.
1
1.5
kg
(3.3
lbs)
1
Spindle thread
MlOx
1.25
IMPORTANT
SAFETY
WARNING:
WHEN USING ELECTRIC TOOLS, BASIC SAFETY
INSTRUCTIONS
(For
All
Tools)
PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO REDUCE
THE RISK OF FIRE, ELECTRIC SHOCK, AND PERSONAL
INJURY, INCLUDING THE FOLLOWING:
READ ALL INSTRUCTIONS.
1.
KEEP WORK AREA CLEAN. Cluttered areas and benches invite injuries.
2.
CONSIDER WORK AREA ENVIRONMENT. Don't use power tools
or wet locations. Keep work area well
Don't use tool
3.
KEEP CHILDREN AWAY. All visitors should be kept away from work area.
Don't let visitors contact tool or extension cord.
4.
STORE IDLE TOOLS. When not
or locked-up place - out of reach of children.
5.
DON'T FORCE TOOL.
it
was intended.
6.
USE RIGHT TOOL. Don't force small tool or attachment to do the job of a
heavy-duty tool. Don't use tool for purpose not intended; for example, don't
use circular saw for cutting tree limbs or logs.
7.
DRESS PROPERLY. Don't wear loose clothing or jewelry. They can be caught
in
moving parts. Rubber gloves and non-skid footwear are recommended
when working outdoors. Wear protective hair covering to contain long hair.
8.
USE SAFETY GLASSES. Also use face or dust mask if cutting operation is
dusty.
9.
DON'T ABUSE CORD. Never carry tool by cord or yank
receptacle. Keep cord from heat, oil, and sharp edges.
IO.
SECURE WORK. Use clamps or a vise to hold work. It's safer than using
your hand and
11.
DON'T OVERREACH. Keep proper footing and balance at all times.
12.
MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for better and
safer performance. Follow instructions for lubricating and changing accessories. Inspect tool cords periodically and if damaged, have repaired by authorized service facility. Inspect extension cords periodically and replace if
damaged. Keep handles dry, clean, and free from oil and grease.
13.
DISCONNECT TOOLS. When not
ing accessories, such as blades, bits, cutters.
in
presence of flammable liquids or gases.
in
It
will
do the job better and safer at the rate for which
it
frees both hands to operate tool.
lit.
Don't expose power tools to rain.
use, tools should be stored
in
use, before servicing, and when chang-
in
it
to disconnect from
in
damp
dry, and high
2
14.
REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are removed from tool before turning
it
on.
15.
AVOID
Be sure switch is OFF when plugging
16.
EXTENSION CORDS. Make sure your extension cord is
UNINTENTIONAL STARTING. Don't carry tool
in.
with
finger on switch.
in
good condition.
When using an extension cord, be sure to use one heavy enough to carry
will
the current your product
in line voltage resulting
in
draw. An undersized cord will cause a drop
loss
of power and overheating. Table 1 shows the
correct size to use depending on cord length and nameplate ampere rating.
If in doubt, use the next heavier gage. The smaller the gage number, the
heavier the cord.
TABLE
1
MINIMUM
0
-
Ampere Rating
More Not More
Than Than
0-
6
10
12
17.
OUTDOOR USE EXTENSION CORDS. When tool is used outdoors, use only
-
-
-
10
12
16
~______
6
18 16 14
18
16 16 14 12
14 12
extension cords intended for use outdoors and
18.
STAY ALERT. Watch what you are doing, use common sense. Don't operate
GAGE
FOR
CORD
SETS
Total Length
25 26 - 50 51 - 100 101 - 150
~
16
of
Cord in Feet
AWG
so
;:
Not Recommended
1
marked.
tool when you are tired.
19.
CHECK DAMAGED PARTS. Before further use of the tool, a guard or other
part that is damaged should be carefully checked to determine that
operate properly and perform its intended function. Check for alignment of
moving parts, binding of moving parts, 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-
in
ice center unless otherwise indicated elsewhere
this instruction manual.
Have defective switches replaced by authorized service center. Don't use
tool
if
switch does not turn
20.
GUARD AGAINST ELECTRIC SHOCK. Prevent body contact with grounded
it
on and off.
surfaces. For example; pipes, radiators, ranges, refrigerator enclosures.
21.
REPLACEMENT PARTS. When servicing, use only identical replacement parts.
22.
POLARIZED PLUGS. To reduce the risk of electric shock, this equipment has
a polarized plug (one blade is wider than the other). This plug will
polarized outlet only one way. If the plug does not fit fully
If
it
reverse the plug.
the proper outlet.
still does not
Do
not change the plug
fit,
contact a qualified electrician to install
in
any way.
in
the outlet,
12
it
fit in
will
a
3
VOLTAGE WARNING: Before connecting the tool to a power source (receptacle,
outlet, etc.) be sure the voltage supplied
A
nameplate of the tool.
for the tool can result
in
the tool. If
voltage less than the nameplate rating is harmful to the motor.
doubt, DO NOT PLUG IN THE TOOL. Using a power source with
power source with voltage greater than that specified
in
SERIOUS INJURY to
is
the same as that specified
the
user - as well as damage to
on
the
ADDITIONAL
1.
Keep guards
2.
Use only wheels having a maximum operating speed at least as high as "No
Load RPM" marked on the tool's nameplate. When using depressed 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
breakage.
6.
Hold the tool firmly.
7.
Keep hands away from rotating parts.
8.
Make sure the wheel is not contacting
turned on.
9.
Before using the tool on an actual workpiece, let
for vibration or wobbling that could indicate poor installation or a poorly
balanced wheel.
IO.
Use the specified surface of the wheel to perform
11.
Watch out for flying sparks. Hold the tool
and other persons or flammable materials.
12.
Do not leave
13.
Do not touch the workpiece immediately after operation;
hot and could burn your skin.
in
place.
the
lock
nut.
Damage to these parts could result
the
tool running. Operate the tool only when hand-held.
SAFETY
the
workpiece before the switch is
so
that sparks fly away from you
RULES
it
run for a while. Watch
the
grinding.
it
may be extremely
in
wheel
SAVE
4
THESE
INSTRUCTIONS.
Installing side grip (auxiliary handle)
Screw the same grip on the tool securely.
Installing or removing depressed center wheel
CAUTION:
Always be sure that the tool is switched off and unplugged before installing or removing
the wheel.
Screw the inner flange onto the spindle. Fit
the wheel on over the inner flange and screw
lock
the
nut onto the spindle.
Lock
nut
Depressed
center wheel
CAUTION:
When installing the depressed center wheel,
screw the inner flange onto the spindle
that the side with hub
16
mm
(5/8") in out-
so
er diameter faces toward the depressed
center wheel.
When installing the diamond wheel or
abrasive disc, screw the inner flange onto the
spindle
(25/32")
that the side with hub 20
in
outer diameter faces toward the
mm
so
diamond wheel or abrasive disc.
5
To
tighten the lock nut, hold the spindle with
the wrench
use the lock nut wrench and securely tighten
clockwise.
so
that
it
cannot revolve, then
Lock
nut
wenc
If
CAUTION:
Use only the Makita wrench and lock nut wrench provided to install or remove the wheel.
Failure to do
could cause an injury.
To remove the wheel, follow the installation procedure in reverse.
Switch
To
start the tool, move the slide switch
forward, and the slide switch will lock in the
"ON" position.
rear of the slide switch, and
the
"OFF" position.
so
action
may result in overtightening or insufficient tightening of the lock nut. This
To
stop lightly depress the
it
will return to
I
0
I
\-wrench
Slide
switch
CAUTION:
Before plugging
returns to the "OFF" position when depressed.
Be sure to clean the tool often to prevent dust/dirt/abrasive material build-up from inter-
fering with the smooth operation
6
in
the tool, always check to see that the switch actuates properly and
of
the swtich.
Operation
Hold the tool firmly. Turn the tool on and wait
until the wheel or disc attains full speed.
Then apply the wheel or disc to the workpiece. In general, keep the edge of the wheel
15'
or disc at an angle of about
piece surface.
During the break-in period with a new wheel,
do not work the grinder in the
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
directions.
to the work-
B
direction or
I
B
WARNING:
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
injury. Depressed center wheel should not be used after
mm
(3")
from service and rendered unusable by intentional destruction.
Abrasive disc (optional accessory)
Install the abrasive disc on the tool as shown
in the figure. Tighten the lock nut securely
with the wrench and lock nut wrench.
of
a
worn-out wheel may result in wheel explosion and serious personal
in diameter. Use of the wheel after this point
I
Lock
Abrasive disc
it
has been worn down to
is
unsafe and
nut
it
should be removed
----a
Rubber
pad
-
1
Inner flange
-&
75
7
MAINTENANCE
CAUTION:
Always be sure that the tool
inspection or maintenance.
To
maintain product SAFETY and RELIABILITY, repairs, carbon brush inspection and replace-
ment, any other maintenance or adjustment should be performed by Makita Authorized or
Factory Service Centers, always using Makita replacement parts.
is
switched
off
and unplugged before attempting to perform
8
ACCESSORIES
CAUTION:
These accessories or attachments are recommended for use with your Makita tool specified in this
of
manual. The use
The accessories or attachments should be used only in the proper and intended manner.
any other accessories or attachments might present a risk
of
injury
to
persons.
@Wheel cover
Part
No.
344257-6
@Depressed center
Part
No.
@Lock
Part
nut
No.
224545-6
10-35
wheels
Size
fmm)
100x4~ 16
Grit
Wheels
per pkg.
@Inner flange
Part
No.
@Multi-disc
35
224291-1
-
742038-00 100
@Rubber pad
Part
No.
76
743009-6
I
9
@Abrasive discs
@Lock nut
(For abrasive disc)
No.
Part
224501-6
10
-
30
742036-0-3
742037-8-3
742038-6-3
@Cut-off wheel
@Flex
wheel
@Wire cup brush
Part
No.
743201-4
@Grip holder
Part
No.
164329-9
@Inner flange
(For flex wheel)
Part
No.
@Lock nut
(For flex wheel)
Part
224278-3
No.
30
10
-
224541-4
@Wire bevel brush
75
Part
No.
743203-0
@Wheel guard assembly
(For cut-off wheel)
No.
Part
@Plastic pad
30
122363-5
(For flex wheel)
Part
No.
743009-1A
Wrench
0
14
Part
No.
781007-2
Lock nut wrench
Part
No.
782401-1
85
20
Part
No.
741404-OBP AC46
741404-OCP
741 404-ODP ACE0
741 404-ODP ACE0
741404-OFP AC120
741404-OFP AC120 10
10
Size
lmm)
Grit
Wheels
per Pkg.
I
10
10
@p-
Grip
36
Part
No.
273506-3
100
mm
(4")
ANGLE GRINDER
Model
N900
Note:
The
switch and other part configurations
may differ from country
to
country.
11
MACHINE
~
11
21
31
41
51
61
71
81
92
10
11
12
13
14
15
Note: The switch and other part specifications may differ
0
Ring
Needle Bearing
Rstainmg
Spiral Bevel Gear
Ball
Flat Washer
Spindle
Wheel Cover
Pan
Inner
1
Lock Nut
1
1
Woodruff Key
1
Spiral Bevel Gear
Ball Bearing 6WOLB
1
Fan
1
11
Bearing
Head
Flange
52
Ring
6201LB
Screw
10-30
810
S-
12
36
12
M5x20
IWith Washer)
30
3
11
from
country
16
17
18
19
20
21
22
24
25
26
27
28
29
E02
E03
to country
ARMATURE ASSEMBLY
1
Ball Bearing
1
1
Field
Carbon Brush
2
1
Terminal Base Complete
Housing
1
1
Cord
1
Switch
Switch Lever
1
Compression Spring
1
1
Housing
Name
1
6
1
1
Plate
Pan
Head Screw
Grip Holder
36
Grip
Set
Set
627LL8
IWith
(With
Item
6
Item
M4x30
lWlth
Item
271
211
(With Washer)
14
.
171
MAKKA
LIMITED
ONE
YEAR
WARRANTY
Warranty Policy
Every Makrta tool is thoroughly inspected and tested before leaving the factory. It
of
defects
from
be free
on@
purchase. Should any trouble develop during
twl, freight prepaid,
the trouble
replaee) without charge.
This
Wananty does not apply where:
repairs
have
repairs
are
The tool
alterations have been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL
SEQUENTIAL DAMAGES FROM THE SALE
APPLIES BOTH DURING AND AFTER THE TERM OF THIS WARRANTY,
MAKITA DISCLAIMS LIABILITY
WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE.”
AFTER THE ONE-YEAR TERM OF
This
Wananty gives you specific legal rights, and you may
state to state.
so
damages,
limitation on how
workmdp and materials for the period of ONE YEAR
to
one
becauw
been
abused, misused
Some
suta do not
long
an
of Makita’s Factory
or
attempted by others:
of
normal
or
implied WU~M(Y hta,
is
caused by defective workmanship
been made
required
has
the above limitation
or
Authorized Service Centers.
or
material, Makita
wear
and tear:
or
improperly maintained;
OR
USE OF THE PRODUCT. THIS DISCLAIMER
FOR
ANY IMPLIED WARRANTIES, INCLUDING IMPLIED
THIS
WARRANTY.
Puow
the
exclusion
excluaion my not apply to you.
so
the above limitation may not apply to you,
this
one-year period, return the COMPLETE
will
also
have other rights which
or
limitation
of
If
repair
(or
incidental
Some
states do not allow
is
warranted to
from
the date of
inspeetion shows
at
our
option,
OR
CON-
vary
from
or
conquential
MAKITA MANUFACTURING EUROPE LTD
TELFORD, SHROPSHIRE, U.K.
883729-063
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