Makita 9900B Users Manual

9900B to the manual a9e57b49-5138-b6b4-b9f5-79376ec07039

2015-02-05

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Belt Sander
76 mm (3") MODEL 9900B

INSTRUCTION MANUAL

DOUBLE
INSULATlON

Specifications
Belt size

Belt speed

76 mm x 5 3 3 mm
(3") x (21")

3 6 0 m /min.
(1,180 ft.)

1

Continuous
rating
(Input)

I y::;:,' 1

850w

3 1 6 mm
(12-112")

1
4.6 kg
(10.1 Ibs)

Power

supply
cord

5m
(16.4ft.)

IMPORTANT
SAFETY INSTRUCTIONS
(For All Tools)

WARNING: WHEN USING ELECTRIC TOOLS, BASIC SAFETY
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 in damp
or wet locations. Keep work area well lit. Don't expose power tools t o rain.
Don't use tool in presence of flammable liquids or gases.

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 in use, tools should be stored in dry, and high
or locked-up place - out of reach of children.

5. DON'T FORCE TOOL. It will do the job better and safer at the rate for which
it was intended.
6. USE RIGHT TOOL. Don't force small tool or attachment t o 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 t o 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 it t o disconnect from
receptacle. Keep cord from heat, oil, and sharp edges.
IO. SECURE WORK. Use clamps or a vise t o hold work. It's safer than using
your hand and it frees both hands t o operate tool.
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 in use, before servicing, and when changing accessories, such as blades, bits, cutters.

2

Total Length of Cord in Feet

0 - 25

26

-

Ampere Rating
More
Not More
Than
Than

0

6
10
12

-

6

-

10

-

12
16

-

50

51

-

100

101

-

150

A W G

18
18
16
14

16
16
16
12

16
14
14

14
12
12

Not Recommended

3

VOLTAGE WARNING: Before connecting the tool t o a power source (receptacle,
outlet, etc.) be sure the voltage supplied is the same as that specified o n the
nameplate of the tool. A power source w i t h voltage greater than that specified
for the tool can result in SERIOUS INJURY t o the user - as well as damage t o
the tool. If in doubt, DO NOT PLUG IN THE TOOL. Using a power source with
voltage less than the nameplate rating is harmful t o 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 in the lock button with your
thumb. To stop the tool from lock position, just pull the trigger again and release
it.

Mounting b e l t
With the tool unplugged and the lever
pulled out a l l 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 i t s 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 i s switched off and unplugged before attempting to perform
inspection or 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 a t the
same time. Use only identical carbon
brushes.

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.

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 IES
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.

Abrasive belts
0

Belt type and use
AA - For wood, iron and steel.
CC - For stone and plastics.

Grit

Pari No

Use

AA40

742306-7

Coarse

AA60

742307-5

AA80

742308-3

AAlOO

742309-1

AA120

742310-6

AA150

742311-4

AA180

742350-4

AA240

742312-2

Sheets per pack
Coarse

742314.8
74231 5-6
Medium

10

CClOO

742316-4

CC120

742317-2

1
7I
CC150

Fine

Medium

I

742318-0

1

Fine

747319-R

Carbon plate

Steel plate

Part No. 423027-7

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.
I F THE PLATE IS ALLOWED TO PROTRUDE, I T MAY CAUSE INJURY.

Dust bag
Part No. 122296-4

7

7 6 m m ( 3 " ) BELT SANDER

Model 9 9 0 0 B

8

1
2

1

3
1

q1

~

P H Screw M4x30 (With Warheil

38

v

39

Pulley 5 - 2 5 L

Motor Housing
(With Brush Holder x 2 & S Screw M5x8 x 21

2

Carbon Brush

5

2

Brush Holder Cap

6

1

F I E L D ASSEMBLY

4

1

'

MACH I N E

M_AC-HS

40
41

1

1

Shoe

0-5

Rivet

1

Name Plate

1

Edge Slider

42

1

Retaining Ring S-12

43

1

Cup Washer 12

(With Garter Spring x 21

44

Baffle Plate

45

Ball Bearing 6 2 0 0 L C B

46

1
1
1

Tension Roller
~

8

1

2

Cup Washer 1 2

Tension Roller Shafr

9

1

Insulation Washer

47

2

P H. Screw M4x10 (With Warherl

10

2

H Bolt M5x45 (With Warherl

48

1

Safety cover

49

1

SupFart Pm

M

1

Tenrion Roller A r m

51

1

Compreirion Spring 11

11

12

1

~

1

Dust Bag
A R M A T U R E ASSEMBLY
IArrembled Items 8. 9. 12. 13.3 141

I
13

1

Fan 75

52

1

Driving Roller

14

I

Ball Bearing 6 x K ) L L B

53

6

C H. Screw M5x18

15

1

Dust Collecror Bracket

54

1

Key 4

4
1

P H Screw M5x25 (With Warherl

55

1

Cup Washer 12

Rubber Pin 4

56

1

Frame (With Rivet x 2 . Dust Guide,

2

P H Screw

57

1

P H. Screw M5x12 (With Washer1

58
53
MI

1

Needle Bearing 810

1

Helical Gear 10

1

Rubber Pin 4

61

1

Ball Bearing 6 2 0 0 L L B

16
17
18

~

1
~

19
2

1

0

1

21
22
23

~

24
2

6

Dust Collector Cover
separator

1

Rubber Pin 4

1

P H Screw M5x12 (With Washer)

1

Fan 74

1

Handle Cover

1

Switch

2

P. H Screw M4x18 (With Washer)

28

1

Strain Relief

29

1

Cord Guard

27

:1

~

12 x 2 & Swnge S h e d

62

1

Gear Cover

63

1

V-Pulley 5 - 4 5

64

2

P H Screw M4x18 (With Warherl

65

1

66

A.R.

Retaining Ring S-12

T Washer 12

67

1

Helical Gear 48

(Assembled Cord, Plug & Cord Guard1

68

1

Bale Plate

P H Screw M5x40 (With Warher)

69

1

Cork Rubber Plate

CORD ASSEMBLY
~

Plane Bearing

M4x18 IWith Washer)

1

Belt cover

70

33

1

Poly V - B e l t 5-304

71

2
1

Steel Plate

4

1

Sleeve 6

72

2

P H. Screw M4x10 (With Warherl

32

I

ACCESSORY

401

i

1

P H Screw M4x10 (With Washer)

1

Abrasive Belt 533-100

9

MAKITA LIMITED ONE 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 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 Service Centers. 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;
alterations have been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES FROM THE SALE OR USE OF THE 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 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 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.

Makita Corporation
3-11-8, Sumiyoshi-hho,
Anjo, Aichi 446 Japan
8832300068

PRINTED IN JAPAN
1995 - 3 - N



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