Makita 9900B User manual

Belt Sander
Belt size
76 mm (3") MODEL 9900B
Continuous Power
1 supply
(Input) cord
Belt speed
1 rating I y::;:,' 1
INSTRUCTION MANUAL
76 mm x 533 mm
(3") x (21")
DOUBLE
INS ULATlO N
316 mm 4.6 kg 5m
850w (12-112") (10.1 Ibs) (16.4ft.)
360m /min.
(1,180 ft.)
Specifications

IMPORTANT
SAFETY INSTRUCTIONS
(For All Tools)
WARNING: WHEN USINGELECTRICTOOLS, BASICSAFETY
PRECAUTIONSSHOULD ALWAYS BE FOLLOWEDTO REDUCE
THE RISK OF FIRE, ELECTRIC SHOCK, AND PERSONAL
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 bestored in dry, and high
or locked-up place
- out of reach of children.
DON'T FORCE TOOL.
It will do thejob better and safer atthe ratefor which
it was intended.
USE RIGHT TOOL. Don't force small tool or attachment to do the job of a
heavy-dutytool. Don't usetoolfor purpose notintended; for example, don't
use circular saw for cutting tree limbs or logs.
DRESS PROPERLY. Don't wear loose clothing orjewelry. They can be caught
in moving parts. Rubber gloves and non-skid footwear are recommended
when workingoutdoors. Wear protective hair covering tocontain longhair.
USE SAFETY GLASSES. Also use face or dust mask
if cutting operation is
dusty.
DON'T ABUSE CORD. Never carry toolby 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. Inspect toolcords 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, and when chang-
ing accessories, such as blades, bits, cutters.

Ampere Rating
More Not More
Than Than
0- 6
6
- 10
10 - 12
12
- 16
3
Total Length of Cord in Feet
0 - 25 26 - 50 51 - 100 101 - 150
AWG
18 16 16 14
18 16 14 12
16 16 14 12
14 12
Not Recommended

VOLTAGE WARNING: Before connecting the tool toa 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 withvoltage greater than that specified
for the tool can result
in SERIOUS INJURY tothe 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.
SAVE THESE INSTRUCTIONS.
4

How to use
Switch action
To start the tool, simply pull the trigger.
Release the trigger to stop. For continuous
operation without having to keep your
finger on the trigger, just pull the trigger
and then push inthe lock buttonwith your
thumb.
To stop the tool from lock posi-
tion, just pull the trigger again and release
it.
Mounting belt
With the tool unplugged and the lever
pulled out
all the way, slip the belt over
the rollers with the arrow direction on the
belt the same
as that of tool revolution (or
belt life
is shortened).
Belt adjustment
Flip sander over on
its back and use the
adjustment knob to obtain equal tension
of belt over the front and back rollers.
Then plug in sander and switch
it on, using
the adjustment knob to center the belt
as
it runs over the rollers.
Failure to adjust belt porperly over rollers
can result in frayed belt edges.
5

MAINTENANCE
CAUTION:
Always be sure that
the tool is switched off and unpluggedbeforeattempting to perform
inspectionor maintenance.
Replacing carbon brushes
Remove and check the carbon brushes
regularly. Replace when they wear down
to the limit mark. Keep the carbon brushes
clean and free to slip in the holders. Both
carbon brushes should be replaced
at the
same time. Use only identical carbon
brushes.
Use
a screwdriver to remove the brush
holder caps. Take out the worn carbon
brushes, insert
the new ones and secure
the brush holdercaps.
Limit mark
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 Makita replacement parts.
6

ACCESS0 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 injury to persons. The
accessories or attachments shouldbe used only inthe proper and intendedmanner.
Grit Pari No Use
AA40 742306-7
Coarse
AA60 742307-5
AA80 742308-3
AAlOO 742309-1 Medium
AA120 742310-6
AA150 742311-4
AA180 742350-4 Fine
AA240 742312-2
Abrasive belts
Sheets per pack
10
0 Belt type and use
AA - For wood, ironand steel.
CC - For stone and plastics.
Carbon plate
Part No. 423027-7
Coarse
742314.8
742315-6
CClOO 742316-4 Medium
CC120 742317-2
CC150 I 742318-0 1
71 Fine I
747319-R
Steel plate
Part No. 342466-1
CAUTION :
Install the steel plate so that THE EDGE OF THE STEEL PLATE WILL NOT
PROTRUDE FROM THE EDGE
OF THE BASE PLATE ON THE SIDE WITH
THE BELT INSTALLING LEVER.
IF THE PLATE IS ALLOWED TO PROTRUDE, ITMAY CAUSE INJURY.
Dust bag
Part No. 122296-4
7

8
76mm(3") BELT SANDER
Model 9900B

M_AC-HS
113
21
q1
412
52
61
811
91
10
2
11 ~ 1
I
13
1
14
I
15 1
16
~ 4
17 1 1
19
1
201
21 1
12 1
18 ~ 2
22 ~ 1
27 ~ 2
23 1
24 1
261
28 1
29
1
1: ~
32 I 1
33 1
41
P H Screw M4x30 (WithWarheil
v Pulley 5-25L
Motor Housing
(With Brush Holder x 2 & S Screw M5x8 x 21
Carbon Brush
Brush Holder Cap
FIELD ASSEMBLY
(With
Garter Spring x 21
Baffle Plate
Ball Bearing 6200LCB
Insulation Washer
H Bolt M5x45 (WithWarherl
Dust
Bag
ARMATURE ASSEMBLY
IArrembled Items 8.
9. 12. 13.3 141
Fan 75
Ball Bearing 6xK)LLB
Dust Collecror Bracket
P H
Screw M5x25 (WithWarherl
Rubber Pin 4
P H Screw M4x18 IWithWasher)
Dust Collector Cover
separator
Rubber Pin
4
P H Screw M5x12 (WithWasher)
Fan 74
Handle Cover
Switch
P. H
Screw M4x18 (WithWasher)
Strain Relief
Cord Guard
CORD ASSEMBLY
(Assembled Cord, Plug
& Cord Guard1
P H Screw M5x40 (With Warher)
Belt cover
Poly V-Belt 5-304
Sleeve 6
MACH I NE
38 1
~
39 ' 2
40 1
41 1
42 1
43 1
44
~ 1
45 1
46 1
47
48
49
M
51
52
53
54
55
56
57
58
53
MI
61
62
63
64
65
66
67
68
69
70
71
72
2
1
1
1
1
1
6
1
1
1
1
1
1
1
1
1
1
2
1
A.R.
1
1
1
2
1
2
Shoe
Rivet
0-5
Name Plate
Edge Slider
Retaining Ring S-12
Cup Washer 12
Tension Roller
Cup Washer 12
Tension Roller Shafr
P
H. Screw M4x10 (WithWarherl
Safety cover
SupFart Pm
Tenrion Roller Arm
Compreirion Spring 11
Driving Roller
C H. Screw M5x18
Key 4
Cup Washer 12
Frame (With Rivet x 2. Dust Guide,
Plane Bearing
12 x 2 & Swnge Shed
P
H. Screw M5x12 (With Washer1
Needle Bearing
810
Helical Gear 10
Rubber Pin 4
Ball Bearing 6200LLB
Gear Cover
V-Pulley 5-45
P H Screw M4x18 (WithWarherl
Retaining
Ring S-12
T Washer 12
Helical Gear 48
Bale Plate
Cork Rubber Plate
P H Screw M4x10 (WithWasher)
Steel Plate
P H. Screw M4x10 (WithWarherl
ACCESSORY
401 i 1 1 Abrasive Belt 533-100
9

MAKITA LIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thoroughlyinspected and tested before leaving the factory. It is warranted to
be free of defects from workmanship and 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.
ThisWarranty 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;
alterationshave been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEQUENTIAL DAMAGES FROM THE SALEOR USE OF THE PRODUCT. THIS DISCLAIMER
APPLIESBOTH DURING AND AFTER THE TERM OF THISWARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED
WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,
AFTER THE ONE-YEAR TERM OFTHISWARRANTY.
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 onhow long an implied warranty lasts,
so the above limitation may not apply to you.
Makita Corporation
3-11 -8, Sumiyoshi-hho,
Anjo, Aichi 446 Japan
8832300068
PRINTED IN JAPAN
1995 -3-N