Makita 9902 User manual

B
Model
9902
9903
9920
9404
Belt Sander
Belt size Belt speed Overalllength Net weight
440
mimin. (1,440ft./min.)
210 ~ 440 mimin.
(690
~ 1,440 ft.1min.l
76 mm x 533 mm
(3'' x 21")
76 mm x 610 mm
(3" x 24")
100
mm 610 mm (690 ~ 1.440 ft.imin.1
(4"
x 24")
296
mm (11-5/8") 4.3 kg (9.5 Ibs)
4.5 kg (9.9 Ibs)
4.7 kg (10.3 Ibs)
334 mm (13-118")
210
~ 440mimin.
76 mm (3") MODEL 9902 76 mm (3") MODEL 9920
76 mm (3") MODEL 9903 100 mm (4") MODEL 9404
INSTRUCTION MANUAL
DOUBLE
INSULATION
SPEC I FI CAT1 0 N S

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.
WORK AREA
1. Keepyour work area clean andwell lit. Cluttered benches anddark areas invite
accidents.
2. Do notoperate powertools in explosiveatmospheres, suchas inthe 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 lose control.
ELECTRICAL SAFETY
4. Double Insulated tools are equipped witha polarized plug(oneblade is wider
than the other.) This plug will
fit in a polarized outlet 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 polarized outlet. Do not change
the plug in any way. Double insulation eliminates the need for the three
wire grounded power cord and grounded power supply system.
5. Avoid body contact with grounded surfaces such as pipes, radiators, ranges
and refrigerators. There is an increased risk of electric shock if your body is
grounded.
6. Donot expose power tools torain or wet conditions. Water entering a power
tool
will increase the risk of electric shock.
7. Do not abusethe cord. Never use the cordtocarry the tools or pull the plug
from an outlet. Keep cord away from heat, oil, sharp edges or moving parts.
Replace damaged cords immediately. Damaged cords increase the risk
of
electric shock.
8. Whenoperating a power tool outside, use an outdoor extensioncord marked
“W-A’ or ”W.” These cords are rated for outdoor use and reduce the risk
of electric shock.
PERSONAL SAFETY
9. Stay alert, watchwhat you are doingandusecommonsense whenoperating
a power
tool. Do not use tool while tired or under the influence of drugs,
alcohol, or medication.
A moment of inattention while operating power tools
may result in serious personal injury.
IO. Dressproperly. Donot wear loose clothing or jewelry. Containlonghair. Keep
your hair, clothing, andglovesaway from movingparts. Looseclothes, jewelry
or long hair can be caught
in moving parts.
2

11. Avoid accidental starting. Be sure switch is off before plugging in. Carrying
tools withyour finger on the switch or plugging
in tools that have the switch
on invites accidents.
12. Remove adjusting keys or wrenches before turning the tool on. A wrench
or a key that isleft attachedtoa rotating part of
the tool may result inpersonal
injury.
13.
Do notoverreach. Keepproper footing and balanceatalltimes. Proper footing
and balance enables better control of the tool in unexpected situations.
14. Use safety equipment. Always wear eye protection. Dust mask, non-skid
safety shoes, hard hat, or hearing protection must be used for appropriate
conditions.
TOOL USE AND CARE
15. Use clamps or other practical way to secure and support the workpiece to
a stable platform. Holdingthe work by hand or against your body is unstable
and may lead to
loss of control.
16. Do notforce tool. Use the 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. Disconnect the plugfrom the power source before making any 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
maintained tools, with sharp cutting edges are less likely tobindand 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 tool serviced before using. Many accidents are caused by poorly main-
tained tools.
22. Use only accessories that are recommended by
the manufacturer for your
model. Accessories that may be suitable for one tool, may become hazardous
when used on another tool.
SERVICE
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. When servicing a tool, use only identicalreplacement parts. Follow instruc-
tions
in the Maintenance section of this manual. Use of unauthorized parts
or failure tofollow Maintenance Instructionsmaycreate a risk of electric shock
or injury.
3

Specific Safety Rules
1. Holdtools by insulatedgrippingsurfaces when performing an operation 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.
2. Hold the tool firmly with both hands.
3. Make sure the belt is not contacting the workpiece before the switch is
4. Keep hands away from rotating parts.
5. Do not leave the tool running. Operate the tool only when hand-held.
6. This tool has not been waterproofed, so do not use water on the workpiece
turned on.
surface.
SAVE THESE INSTRUCTIONS.
SYMBOLS
The followings show the symbols used for tool.
v ................................... volts
A ................................... amperes
Hz ................................... herts
% ................................... alternating current
lol ................................... Class I1 Construction
m/min ................................... meter per minute
4

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 button. To stop the tool from the
locked position, pull the trigger fully, then
release
it.
Speedadjustingdial
For 9903,9920 and 9404
The belt speed can be infinitely adjustedbe-
tween 21
0 m (690 ft.) and 440 m (1,440ft.)
per minute by turning the speed adjusting
dial to
a given number setting from 1 to 5.
Higher speed is obtained when the dial is
turned in the direction of number
5; lower
speed is obtained when
it is turned in the
direction of number
1.
Select the proper speed for the workpiece
to besanded.
Speed adjusting dial
Lock button
\
CAUTION:
The speed adjusting dial can beturnedonly as far as 5 and backto 1. DO notforce it past 5
or 1, or the speed adjustingfunction may not longerwork.
5

ASSEMBLY
Installing or removing abrasivebelt
CAUTION:
Always be sure that the tool
is switched off and unplugged before irrstallingor removing
the belt.
Pull the lever all the way out and install the
belt over the rollers, then return the lever
to the originalposition.
CAUTION:
When installing the belt, make sure that
the direction of the arrow on the back
of
the belt corresponds tothe one on the tool
itself.
Adjusting belttracking
Switch on the tool and make sure that the
belt
is aligned properly. If the edge of the
belt extends beyond the edge of the steel
plate or the edge of the belt retracts more
than
6 mm (1/4”) away from the edge of
the steel plate, use the adjusting knob to
adjust the belt tracking.
Lever
more than
I
Adjusting knob
6

Dust bag
Attach the dust bag onto the dust spout. The dust spout is tapered. When attaching the
dust bag, push itonto the dust spout firmly as far as it
will goto prevent it from comingoff
during operation.
For the best results, empty the dust bag when
it becomes about half full, tapping it lightly
to removeas muchdust
as possible.
I 1
Dustbag -1
Dustspout
I
OPERATION
Sanding operation
Hold the tool firmly with both hands. Turn
the tool on and wait until it attains full
speed. Then gently place the tool on the
workpiece surface. Keep the belt flush with
the workpiece at all times and move the
tool back and forth. Never force the tool.
The weight of the tool applies adequate
pressure. Excessive pressure may cause
stalling, overheating of the motor, burning
of theworkpiece and possible kickback.
Connectingto Makitavacuum cleaner Or
dust collector
Cleaner sanding operations can be per-
formed by connecting the belt sander to
Makita vacuum cleaneror dust collector.
When connecting to Makita vacuum
cleaner (Model
406), an optional hose
28" (l-I/8'') in inner diameter is neces-
sary.
When connecting to Makita dust collector
(Model
420.9, the optional hose is not nec-
essary. You can connect the belt sander
directly to the hose
of the dust collector.
1
Fastener
Optional hose
28 mm (1-1/6')
inner diameter
vacuum cleaner
I
Vacuum cleaner
7

* Sandingshoe (optionalaccessory)
The sanding shoe readily allows you to
sand workpieces more evenly.
'L Sanding shoe
8

MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and unplugged before attempting to perform
inspection or maintenance.
Replacingcarbonbrushes
Removeand check the carbon brushes reg-
ularly. 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 holder caps.
To maintain product SAFETY and RELIABILITY, repairs,any other maintenance
or adjust-
ment shouldbe performedby Makita Authorizedor Factory Service Centers,always using
Makita replacement parts.
9

ACCESSORIES
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 accessones or attachments should be used only in the proper and intended manner
*Abrasivebelts (10 pcs. per pkg.)
*Hose
28 mm U-lB")in inner diameter
Size 1 ;;: 1 Part~o. 1
(mm)
742306-7
742307-5
(3"
x 21 ")
74231 0-6
IrJ
742312-8A
76
x 610
(3"
x 24")
I #60 1 742312-8B I
#80 I 742312-8C
I # 150 1 742312-8F
742324-5
742325-3
-Sanding shoe
-Dust bag
10

MAKmA LIMED 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, toone 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 doesnot apply where:
repairs have been made or attemptedby others:
repairs are required because of normal wear and tear:
The tool has been abused, misused or improperly maintained;
alterationshave been made tothe tool.
1
1
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEQUENTIAL DAMAGES FROM THE SALE OR USE OFTHE PRODUCT. THIS DISCLAIMER
APPLIES BOTH DURING AND AFTER THE TERM OFTHISWARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED
WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,”
AFTER THEONE-YEAR TERM OF
THIS WARRANTY.
This Warranty gives you specific legal rights, and you may also have other nghts 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.
- p_
Makita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi 446-8502 Japan
884285-066
PRINTED IN JAPAN
1999-1 1 -N