Makita BO5020 User manual

Random Orbit
MODEL
MODEL BO5020
MODEL BO5021
Dimensions (L x W x H) Net weight
Pad size Orbits per minutes
INSTRUCTION MANUAL
DOUBLE
INSULATION
SPEC I FI CAT1 0 N S
288 mm x 123 mm x 147 mm
B05020{ 123mm 1 12,000
1
Bo5021 (4 13/16")
4,000 ~ 12,000 (11-11/32" x 4-13/16'' x 5-11/16") kg (3'1 Ibs)
I I I
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
to follow all instructions listed below, may result in electric
shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
READ ALL INSTRUCTIONS.
WORK AREA
1. Keep your work area cleanand well lit. Cluttered benches and dark areas invite
accidents.
2. Donotoperate power tools inexplosiveatmospheres, 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.
ELECTRICAL SAFETY
4. Double Insulatedtools are equipped witha polarizedplug(onebladeiswider
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 [g eliminates the need for the three
wire grounded power cord and grounded power supply system.
5. Avoid body contactwith grounded surfaces suchas pipes, radiators, ranges
and refrigerators. There is an increased risk of electric shock if your body is
grounded.
6. Don't expose power tools torain or wet conditions. Water entering a power
tool will increase the risk of electric shock.
7. Do not abuse the cord. Never use the cordto carry the tools or pull the plug
from an outlet. Keep cord away from heat, oil, sharp edges or movingparts.
Replace damaged cords immediately. Damaged cords increase the risk
of
electric shock.
8. When operating a power tool outside, use an outdoor extension cord marked
"W-A" or "W." These cords are rated for outdoor use and reduce the risk
of electric shock.
PERSONAL SAFETY
9. Stav alert, watch what you are doing and usecommonsensewhenoperating
10
2
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.
Dressproperly. Donotwear looseclothing or jewelry. Contain long hair. Keep
your hair, clothing, and glovesaway from moving parts. Looseclothes, jewelry
or long hair can be caught in moving parts.

11. Avoid accidental starting. Be sure switch isoff before plugging in. Carrying
tools withyour finger onthe switch or plugging intools that have the switch
on invites accidents.
12. Remove adjusting keys or switches beforeturning the toolon. A wrench or
a key that is left attached to a rotating part of the tool may result in personal
injury.
13. Donotoverreach. Keepproper footingand balance atalltimes. 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 toolfor 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 cuttingedges are less likely to 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 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.
S ERVlCE
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 identical replacement parts. Follow instruc-
tions
in the Maintenance section of this manual. Use of unauthorized parts
or failure tofollow Maintenance Instructions may create a risk
of electric shock
or injury.
3

Specific Safety Rules
1. Hold the tool firmly.
2. Do not leave the tool running. Operate the tool only when hand-held.
3. This tool has not been waterproofed, so do not use water on the workpiece
4. Ventilate your work area adequately when you perform sanding operations.
surface.
SAVE THESE INSTRUCTIONS.
SYMBOLS
The followings show the symbols used for tool.
v ................................. volts
A ................................. amperes
Hz ................................. herts
kg
................................. kilograms
h ................................. hours
min
................................. minutes
S ................................. seconds
'L ................................. alternatingcurrent
- direct current
____
.................................
n, ................................. no loadspeed
5
................................. alternatingor direct current
................................. Class II Construction
A ................................. splash-proof construction
A A ................................. watertight construction
... /min
................................ revolutions or reciprocationper minute
@ ................................. numberof blow
4

FUNCTIONAL DESCRIPTION
Switch action
CAUTIO N :
Before plugginginthe tool, always check to see that the switch trigger actuates properly
and returnsto the "OFF" position when released.
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.
Speed adjusting dial
(For 805021 only)
\\
5

Speed adjusting dial
For BO5021only
The tool speed can be infinitelyadjusted between 4,000 opm and 12,000 opm by turning
the speed adjustingdial, which is marked
1 to 5. Higher speed is obtainedwhen the dial is
turned inthe direction of number 5; lower speed isobtainedwhen it isturned inthe direc-
tion of number
1. Referto the figure below for the relationshipbetween the number set-
tings on the adjustingdial and the kindof work.
-
0 range
I range j
,
A range: For polishing
B range: For finishsanding
C range: For regularsanding
NOTE:
The above figure shows standardapplications. They may differ under certain conditions.
6

Emptying dust bag
When the dust bag is about half full, switch off and unplug the tool. Hold the tool and
removethe dust bag from the dust nozzlewhile pressingthe push button.
After emptying the dust bag, insert the
hook onthe dust nozzleintothe rectangular
hole on one side of the dust bag frame and
push up the dust bag frame until it clicks
intoplaceon the push button.

ASSEMBLY
Frontgrip
Install the front grip on the tool so that its
protrusions fit intothe matching notches in
the front of the tool. Secure the front grip
using
a screwdriver to tighten the screw
through the holeinthe front grip.
Installing or removing abrasivedisc
CAUTION:
Always be sure that the tool is switched off and unplugged before installing or removing
the disc.
To install the abrasive disc, first remove all
dirt or foreign matter from the pad. Then
attach the abrasive disc to the pad, using
the hook-and-loop system of the abrasive
disc and the pad. Be careful to align the
holes inthe abrasive disc with those in the
pad.
CAUTION:
Always use hook-and-loopsystem abrasive discs. Never use pressure-sensitiveabrasive
discs.
Installingdust bag
Install the dust bag on the tool so that the
arrow with "UP" indicated on the dust
nozzlepoints upward.
8

OPERATION
Sanding operation
Turn the tool on and wait until it attains full
speed.
Then gently place the tool on the
workpiece surface. Keepthe padflush with
the workpiece and apply slight pressure on
the tool.
CAUTION:
*Never runthe tool without the abrasive disc. You may seriously damage the pad.
*Never force the tool. Excessive pressure may decrease the sanding efficiency, damage
the abrasive disc or shorten tool life.
Polishing operation
For
BO5021 only
CAUTION:
*Use only
a Makitagenuine sponge pad, felt pad or wool pad (optionalaccessories).
*Always operatethe tool
at low speed to preventwork surfaces from heatingabnormally.
*Never force the
tool. Excessive pressure may decrease the polishing efficiency and
cause motor overload, resultingin tool malfunction.
Applying wax
Use an optional sponge pad. Apply wax to
the sponge pad or work surface. Run the
tool at lowspeed to smoothout wax.
NOTE:
*First, wax
a not conspicuous portion of the work surface to make sure that the tool will
*Always runthe toolat low speed. Running
it at highspeed may cause the wax to spatter.
not scratch the surface or result in unevenwaxing.
9

Removing wax
Use an optional felt pad. Run the tool at
low speed to removewax.
Polishing
Use an optional wool pad. Run the tool at
low speed and apply the
wool pad gently
to the work surface.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and unpluggedbefore attempting to perform
inspection
or maintenance.
To maintainproducts SAFETY and RELIABILITY, repairs, any other maintenanceor adjust-
ment should be performedby MakitaAuthorizedor FactoryService Centers, always using
Makita replacementparts.
10

ACCESSORIES
CAUTION:
These accessories or attachments are recommendedfor 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 accessoriesor attachments should be usedonly inthe proper and intended manner.
Hook-and-loopsystemabrasivedisc Hook-and-loopsystemsponge pad
(ForBO5021 only) Use at low speed
(Hook
& loop backingand pre-punchedholes)
50
Part No7945586
#120 I 794520-1-50
#180
I 794521-9-50
Part No.7945586
Q
Qty. per Pkg. Grit Part No.
Hook-and-loopsystem wool pad
79451 8-8
(For BO5021only)Use at low speed
Part No.794560-9
79451 9-6
# 100 794523-A
# 120 794520-1
794521-9
794522-7
I #320 I 742526-A
I #400 I 742527-A
#60 I 794518-850
#EO I 79451 9-6-50
I # 100 I 794523-A-50
#240
I 794522-7-50
#320
I 792526-A-50
I #400 I 792527-A-50
Hook-and-loopsystemfelt pad
(For BO5021only)Use at low speed
Part No. 794559-4
11

Jan.-10-'98 US
RANDOM ORBIT SANDER
Model BO5020
374
Note: The switch and other part configurations
may differ from country to country.
12

MODEL BO5020
IFOM uED DESCRIPTION
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Jan -14-'99 US
,"!, DESCRIPTION
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
MACHINE
MACHlNE
~
1
2
3
4
5
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
1
1
1
2
1
1
1
1
1
1
1
1
8
1
1
1
1
1
-
Housing Set (With Item 171
Cord Guard
Cord
Strain Relief
Tapptng Screw 4x18
Switch
Brush Holder
Carbon
Brush
Carbon Brush
Brush Hoider
Ball Bearing 607DDW
Counter Weight
Field
Tapping Screw 4x18
Name
Plafe
Housing Set Wth Item 11
Square Nut M5
Front
Grcp
ARMATURE ASSEMBLY
IWith
Item 12 13 21 & 221
Stop Ring E-9
Ball Bearing 6000DOU
Fan
88
Thin Washer 15
Dust Bag
DUST Nozzle
Tapping Screw 4x18
Skirt Set IWith Item 291
Skirt Set IWtfh Item 281
Beamg Box
Ball Bearing 6002DDW
Flat Washer 4
Pan Head Screw M4x12
Brake Ring
Bearing Box Cover
Pad 123
Pan Head Screw M4x16
Note The switch and other par1 specifications may differ from country to country
13

Jan.-10-'98 US
RANDOM ORBIT SANDER
Model BO5021
30'
Note: The switch and other part configurations
may differ from country to country.
14

Jan.-14--'99 US
MODEL BO5021
'ZM ;ED DESCRIPTION 'EM itD DESCRIPTION
MACHINE
~
1 1 Housing Set IWith Item 18)
2
1 1 1 Cord Guard
3
4
5
7
8
9
10
11
12
13
14
15
16
17
18
1
2
1
1
Cord
Strain Relief
Tapping Screw 4x18
Switch
Controller
Brush Holder
Carbon
Brush
Carbon Brush
Brush Holder
Ball Bearing
607DDW
Counter Weight
Field
Tapping Screw 4x18
Name Plate
Housinq Set WthItem 11
MACHINE
~
22
23
24
25
26
21
20
29
30
31
32
33
34
35
36
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
19
Square Nut M5 37 1
20
1 1 Front Grip 138 3
Note
The switch and other part specifications may dllfer from country to country
ARMATURE ASSEMBLY
IWith Item 13
14 22 & 231
Stop Ring E-9
Ball Bearing 6000DDU
Fan 88
Thin Washer 15
Dust Nozzle
Tapping Screw 4x10
Skirt Set IWith Item 30)
Skirt Set (With Item 291
Ball Bearing 6OOZDDW
Flat Washer 4
Pan Head Screw M4xl2
Brake Ring
Pad 123
Pan Head Screw M4x16
D"*t Bag
Beallng BOX
Bearing BOX cover
15

P
MAKKA LIMrrED 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 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, fremtprepaid, to one of Makita’s Factory or Authorized ServiceCenters. If inspectionshows
the trouble is causcd 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:
Thetool 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 OFTHE PRODUm. 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 THISWARRANTY.
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 onhow long animplied warranty
lasts, so the above Limitationmay not apply to you.
Makita Corporation of America
2650 Buford Hwy., Buford, GA 30518
884224 - 066
PRINTED IN USA
1999 - 3 - N