Makita HM0810B User manual

MODEL HMOSlOB
2,900
INSTRUCTION MANUAL
423 mm 116-5/8") 5.3 kg (11.7 Ibs)
U
DOUBLE
INSULATION
SPEC IF I CAT1 0 N S
BIOWS per minute I Overall length I Net weight

IMPORTANT
SAFETY INSTRUCTIONS
(For All Tools)
WARNING: WHEN USING ELECTRICTOOLS, 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. Keepwork area well
lit. Don't expose power tools torain.
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 inuse, tools should be storedindry, and high
or locked-up place
- out of reach of children.
DON'T FORCETOOL.
It willdo 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-duty tool. Don't use tool for purpose not intended.
DRESS PROPERLY. Don't wear loose clothing or jewelry. They canbe caught
in moving parts. Rubber gloves and non-skid footwear are recommended
when working outdoors. Wear protective hair covering tocontain long hair.
USE SAFETY GLASSES. Also use face or dust mask
if cutting operation is
dusty.
DON'T ABUSE CORD. Never carrytool by 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 periodically and
if damaged, have repairedby autho-
rized service facility. Inspect extension cords periodically and replace
if
damaged. Keep handles dry, clean, and free from oil and grease.
DISCONNECT TOOLS. When not
in use, beforeservicing, and when chang-
ing accessories, such as blades, bits, cutters.

14. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to
see that keys and adjustingwrenches are removedfromtoolbeforeturning
it on.
15. AVOID UNINTENTIONAL STARTING. Don‘t carry plugged-in tool with finger
on switch. Be sure switch is OFF when plugging
in.
16. OUTDOOR USEEXTENSIONCORDS.Whentoolis usedoutdoors, use only
extension cords intended for use outdoors and
so marked.
17. STAY ALERT. Watchwhat youare doing, use commonsense. Don’t operate
tool when you are tired.
18. CHECK DAMAGED PARTS. Before further use of the tool, a guard or other
part that is damaged should be carefully checked to determine that
it will
operate properly and performitsintendedfunction. 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
service center unless otherwise indicated elsewhere
in this instruction
manual. Havedefectiveswitchesreplacedby authorized service center. Don’t
use tool if switch does not turn
it on and off.
19. GUARD AGAINST ELECTRIC SHOCK. Prevent body contact withgrounded
surfaces. For example; pipes, radiators, ranges, refrigerator enclosures.
20. REPLACEMENTPARTS. When servicing, use only identicalreplacement parts.
21. POLARIZEDPLUGS. To reduce the risk of electric shock, thisequipment has
a polarized plug (one blade 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 stilldoes notfit, contacta qualified electrician toinstall
the proper outlet.
Do not change the plug in any way.
VOLTAGE WARNING: Before connectingthe tooltoa 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
with voltage greater than that specified
for the tool can result
in SERIOUS INJURY to the 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.
3

ADDITIONAL SAFETY RULES
1. Wear a hardhat (safetyhelmet), safety glasses and/or face shield. It isalso
highly recommended that you wear a dust mask, ear protectors and thickly
padded gloves.
2. Be sure the bit is secured in place before operation.
3. Under normaloperation, the toolisdesignedtoproducevibration. Thescrews
can come loose easily, causing a breakdown or accident. Check tightness
of screws carefully before operation.
4. Incold weather or when the tool has not been used for a longtime, let the
tool warm up for several minutes by operating
it under no load. This will
loosen up the lubrication. Without proper warm-up, hammering operation
is difficult.
Be sure no one is below when using the tool
in high locations.
5. Always be sure you have a firm footing.
6. Hold the tool firmly with both hands.
7. Keep hands away from moving parts.
8. Do not leave the tool running. Operate the tool only when hand-held.
9. Do not point the tool at any one in the area when operating. The bit could
fly out and injure someone seriously.
IO. When chippinginto walls, floors or wherever “live” electricalwires may be
encountered,
DO NOT TOUCH ANY METAL PARTS OF THE TOOL!
Hold the tool by the insulated grasping surfaces to prevent electric shock
if you drill or chip into a “live” wire.
11. Do not touch the bit or parts close to the bit immediately after operation;
they may be extremely hot and could
burn your skin.
SAVE THESE INSTRUCTIONS.
4

Installing or removing bull point or other bits (cold chisel, etc.)
CAUTION :
Always be sure that the tool is switched off and unplugged before installing or removing
the bit.
Press in the tool retainer and turn
it until
the red dots on the tool retainer and the
tool holder are aligned.
Release the tool
retainer.
Insert the bit into the tool holder
as far as
it will go. Press in the tool retainer and
turn
it a full 180 degrees. Then release it
to secure the bit.
1
-
Red dot (Tool holder)
Red dot
(Tool retainer)
~ Tool retainer
II,
To remove the bit, follow the installation procedures in reverse.
Side grip (auxiliary handle)
The side grip swings around to either side,
allowing easy handling of the tool in any
position. Loosen the side grip
by turning
it counterclockwise, swing
it to the desired
position and then tighten
it by turning
clockwise.
5

Switch action
To start the tool, simply pull the trigger.
Release the trigger tostop. 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.
Lock button
Trigger switch
CAUTION :
Before plugging in the tool, always check to see that the trigger switch actuates porperly
and returns to the "OFF" position when released.
Chipping
. Scaling Demolition
Hold the tool firmly with both hands. Turn the tool on and apply slight pressure on the
tool
so that the tool will not bounce around, uncontrolled. Pressingvery hard on the tool
will not increase the efficiency.
6

MAINTENANCE
CAUTION :
Always be sure that the tool is switched off and unplugged beforeattempting to perform
inspection or maintenance.
Replacingcarbon brushes
When the resin insulating tip inside the
carbon brush
is exposed to contact the
commutator
it will automatically shut off
When this occurs, both carbon brushes
should be replaced
at the same time. Use
only identical carbon brushes.
the motor.
Use a hex wrench to removethe rear cover.
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.
, Insulating tip
7
Commutator
Carbon brush
1'
7

Lubrication
Lubricate the tool every time the carbon brushesare replaced.
Run the tool for several minufes to warm
it up, then rest the tool on the table with
the bit end pointing upwards.
This will allow the old grease to collect in-
side the crank housing. After five minutes,
take off the crank cap and remove the old
grease. Wipe out
all grease inside and re-
placewith
a fresh supply (30 g; 1 oz.)
CAUTION
:
0 Filling with more than the specified
amount of grease (approx. 309;
1 oz.)
can cause faulty hammering action or
tool failure.
Fill only with the specified
amount of grease.
0 Use only Makita genuine grease. The use
of any other grease may harmthe tool.
Lock nut wrench /
\ I ,
0 Do not tighten the crank cap excessively when installing. It is made of resin and is sub-
ject to breakage.
To maintain product SAFETY and RELIABILITY, reparis, any other maintenance or
adjustment should be performed by Makita Authorized
or Factory Service Centers,
always using Makita replacementparts.
8

ACCESSOR 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 should
be usedonly in the proper and intended manner.
0 Bull point (Fordemolishing)
0 Cold chisel (Forgouging)
300 mm (11-7/8") Part No. 798146-1
450
mm (17-3/8") Part No. 798147-9 Part No. 798139-8
Part No. 798140-3
26
mm (1 '9 x 300 mm (1 1-7/8")
26
mm (I") x 450 mm (17-3/4")
-
-
Scaling chisel
50 mm (2") x 300 mm (1 1-7/8")
Part No. 798141-1
0 Grooving chisel
22 mm (7/8") x 300 mm (1 1-7/8")
26
rnm (1") x 300 mm (1 1-7/8")
Part No. 798142-9
Part No. 798143-7
0 Ground rod adapter
20 mm (3/4") x 170 mm (6-1 1 /I 6")
Part No. 798132-2
0 Lock nut wrench 35
Part No. 782407-9
0 Clay spade
105 mm (4-1/8") x 400 rnm (1 5-3/4")
Part No. 798148-7
0 Rammer (For tamping, ramming, etc.)
140 mm (5-1/2")
Part No. 798149-5
0 Bushingtool (For surfacingconcrete)
67 mm (2-5/8") x 300 mm (11-7/8")
Part No. 798144-5
e-
o Hex wrench
No. 4 Part No. 783202-0
No. 5 Part No. 783203-8
9

Blow-out bulb
Part No. 765009-6
======a
0 Steel carrying case
Part No. 182238-0
0 Hammer grease (30 g)
Part No. 181490-7
0 Safety goggle
Part No. 191686-2

Sep-16-'92 EN
DEMOLITION HAMMER
Note: The switch, noise suppressor and other part configuratlons
may differ from country to country.
11

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6
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6
9
10
II
12
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25
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27
26
29
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39
40
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r
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
I
1
1
1
1
1
1
1
1
I
1
1
1
1
1
1
1
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1
1
1
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MODEL HMO8108
ITEM NO
'EM $ED DESCRIPTION NO USED
MA
Barrel Cover
Her. Socket Head Bolt M6x25 WthWaaherl
Barrel
0 Ring 44
Striker
Inner Ring 26
Piston Ring 30
Piston Ring 30
Inner Ring 26
PlStO"
P," 8
Crank Cap
0 Ring 60
Rad
Needle
Bearing 1212
Crank Shaft
Woodruff
key 4
Retaining
Ring R-47
Ball Bearing 6303
0 Ring 48
Crank Housing
011 Seal 17
neilcai GW 41
Gear Mousing
Needle Bearing 1210
Handle Shaft
Flat Washer 24
lmpaci Bolt
X Ring 26
0 Ring 27
Tool Holder
Tool Rerainer
CompreJIlon Spring 15
Hex MB~I 2
Seal
0 Ring 32
Ball Bearing 6201LL6
Dust Seal 12
Fsn 62
ARMATURE ASSEMBLY
lWilh
Item 27 - 421
MA1
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
68
59
60
61
62
63
64
65
67
68
70
71
74
75
76
77
78
79
80
81
62
63
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UE
1
1
1
1
2
1
4
1
1
2
2
4
4
2
2
1
1
1
1
1
1
1
1
1
2
2
1
2
2
1
1
1
1
2
1
1
2
2
2
-
Sep-16-'92 US
DESCRIPTION
Insulation Warher
Ball Bearing 608LLB
Rubber Pm 4
Baffle Plate
Hex Boll M5x60 [WithWisher 6 Band1
FIELD ASSEMBLY
Rivet 0-5
Name Plate
Motor Housing
Carbon Brush
Brush
Molder Cap
Flaf Wssher 6
Hex Socket Head Bolt M6x50 lWithWaoherl
Hex Socket Head 6011 M5rl8
Spring Washer 5
Rem Cover
Sponge
38 5-46
Hex Nut M6
Spr8ng Washer 6
Flat Washer 6
Grip 32
Grip Bare
Clamp Nut
Grip Clamp
Hex Socket Head Bolt M6x14
Cuihm Plate
Switch
Hex Socket Head Bolt M6x25
Pan Head Screw M4x8 (With Wanherl
Handle Set lW8th Item 791
Cord Guard
Cord
Strain Relief
Pan Head Screw M4x16 IWllh Wmherl
Handle Ser lWifh Item 741
Pan Head Screw M5x25 lWiIh Wanherl
Rubber Ring 6
Rubber Rmg 9
Sleeve 6
Now The Switch and other paif Specifications may differ from country to country
MAKITA 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 workinanship and matetials for the period of ONE YEAR from the date of
original purchase. Should mytrouble develop during this one-year period,
return the COMPLETE
tool, freight prepaid, to one of Makita's Factory or Authorized Setvice Centers, If inspection shows
the trouble is caused by defective worltmanshlD or material. Makita will repatr (or at our option,
replace) without charge.
This Warranty does not apply where:
e repairs have been made or attemDted by others:
repairs are required because of normal wear and tear:
The tool ha been abused, misused or improperly maintained;
alterations have ban 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 PRODUCT. THIS DISCLAIMER
APPLIES BOTH 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 hitationof incidental or Consequential
damages,
so the above limitation or exclusion may no1 apply lo you. Some states do not allow
limitation on haw long an implied warranty lasts, so the above limitation may not apply to you.
M akita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi 446 Japan
883720 - 061 PRINTED IN JAPAN
1993
- 4 - N