Makita HK1810 User manual

Power
Blows per minute Overall length
0 ~ 3.200 31 5 mm (1 2-318")
Scraper
Net weight
3.2 kg
17.0 Ibs)
MODEL HK181O
Variable Speed
INSTRUCTION MANUAL
DOUBLE
INSULATION

IMPORTANT
SAFETY INSTRUCTIONS
(For All Tools)
WARNING: WHEN USINGELECTRICTOOLS, BASICSAFETY
PRECAUTIONSSHOULDALWAYS BE FOLLOWEDTO 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 torain.
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 IDLETOOLS. When not in use, tools should bestored in dry, andhigh
or locked-up place
- out of reach of children.
5. DON'T FORCETOOL. It will do thejob betterand safer at the ratefor which
it was intended.
6. USE RIGHT TOOL. Don't force small tool or attachment to do the job of a
heavy-dutytool. Don't usetool for purpose not intended; for example, don't
use circular saw for cutting tree limbs or logs.
7. DRESS PROPERLY. Don't wear looseclothingorjewelry. They can becaught
in moving parts. Rubber gloves and non-skid footwear are recommended
when working outdoors. Wear protective hair covering tocontain longhair.
8. USE SAFETY GLASSES. Also use face or dust mask if cutting operation is
dusty.
9. DON'T ABUSE CORD. Nevercarry tool bycordor yank it todisconnect from
receptacle. Keep cord from heat, oil, and sharp edges.
IO. 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.
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 lubricatingand changing acces-
sories. Inspecttool cordsperiodicallyandifdamaged, have repairedbyautho-
rized service facility. Inspect extension cords periodically and replace if
damaged. Keep handles dry, clean, and free from oil and grease.
13. DISCONNECTTOOLS. When notinuse, beforeservicing, and when chang-
ing accessories, such as blades, bits, cutters.
2

14. REMOVEADJUSTING KEYS AND WRENCHES. Form habit of checking to
seethatkeys andadjusting wrenchesare removedfromtool beforeturning
it on.
15. AVOID UNINTENTIONALSTARTING. Don’t carry tool withfinger onswitch.
Be sure switch is OFF when plugging
in.
16. EXTENSION CORDS. Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one heavy enough to carry
the current your product will draw. An undersized cord
will cause a drop
inlinevoltage resulting
in loss of power and overheating. Table 1 showsthe
correctsize touse depending oncord lengthandnameplateampere rating.
If
in doubt, use the next heavier gage. The smaller the gage number, the
heavier the cord.
TABLE 1 MINIMUM GAGE FOR CORD SETS
I
Total Length of Cord in Feet
I 0 - 25 I 26 - 50 I 51 - 100 I 101 - 150
Mrl:More 1 18 ~ 16 110 16 , 14
-
10 18 16 14 12
10
-
12 16 16 14 12
12
-
16 14 12 Not Recommended
17. OUTDOOR USEEXTENSIONCORDS. When toolisusedoutdoors, use only
extension cords intended for use outdoors and
so marked.
18. STAY ALERT. Watch what youaredoing, use common sense. Don’t operate
tool when you are tired.
19. CHECK DAMAGEDPARTS. 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.Havedefective switches replacedbyauthorizedservicecenter.Don’t
use
tool if switchdoes not turn it on and off.
20. GUARD AGAINST ELECTRIC SHOCK. Prevent body contact withgrounded
surfaces. For example; pipes, radiators, ranges, refrigerator enclosures.
21. REPLACEMENTPARTS. When servicing, useonly identical replacementparts.
22. POLARIZEDPLUGS. To reduce the risk of electric shock, this equipmenthas
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,
reversethe plug.
If it still does not fit, contact aqualifiedelectriciantoinstall
the proper outlet.
Do not change the plug in any way.
3

VOLTAGE WARNING: Beforeconnectingthe tooltoa powersource (receptacle,
outlet, etc.) be sure the voltage supplied is the same as that specified on the
nameplateof the tool. A power source withvoltage greater than that specified
for the tool can result
in SERIOUS INJURYtothe user - as well as damage to
the tool.
If in doubt, DO NOT PLUG INTHE TOOL. Usinga power source with
voltage less than the nameplate rating is harmful to the motor.
ADDITIONAL SAFETY RULES
1. Wear ear protectors when using for extended periods.
2. Be sure the scaling chisel 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. In cold weather or when the tool has not been usedfor a longtime, let the
tool warm up for several minutes by operating
it under no load. This will
loosen upthe lubrication. Without proper warm-up hammeringoperation 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 scaling
chisel or bull point could fly out and injure someone seriously.
IO. When chippingintowahls, floors or wherever "live" electricalwires may be
encountered,
DO NOT TOUCH ANY METAL PARTS OF THE TOOL!
Hold the
tool only by the plastic handle or the side grip to prevent electric
shock
if you chip into a "live" wire.
11. Do not touch the scaling chisel immediately after operation; they may be
extremely hot and could burn your skin.
SAVE THESE INSTRUCTIONS.
4

Installing or removing scaling chisel or other bit (bull point, etc.)
CAUTION:
Always be sure that the tool is switched off and unplugged before installing or removing
the bit.
To install the bit, first attach the dust cover
provided to the bit as shown in the figure.
Then turn the
tool retainer in the direction
of the arrow and insert the bit into the tool
barrelas far as
it will go. Now turn the tool
retainer in the opposite direction to secure
the bit.
Dust cover
To removethe bit, follow the installation procedure in reverse.
Switch action
Tool
speed is increased by increasing pres-
sure
on the trigger. To start the tool,
simply pull the trigger.
Release the trigger
to stop. A speed control screw
is provided
so thatmaximumtool speed can be limited
(variable). Turn the speed control screw
clockwise for higher speed, and counter-
clockwise for lower speed.
Speed control screw
Trigger switch
CAUTION :
Before plugging in the tool, always check to see that the trigger switch actuates properly
and returns tothe
"OFF" positionwhen released.

Operation
Position the chisel
at the location to be
scaled, then pull the trigger. Apply light
pressure to the tool. Forcing the tool will
only decreasethe tool performance.
6

MAINTENANCE
CAUTION :
Always be sure that the tool is switched off and unpluggedbefore attempting to perform
inspectionor maintenance.
Lubrication
This tool requires no hourly or daily lubricationbecause
it has a grease-packedlubrica-
tion system. It should be relubricated after every
6 months of operation. Send the com-
plete tool to Makita Authorized or Factory Service Center for this lubricationservice.
However, if circumstances require that
you should lubricate it by yourself, proceed as
follows.
Run the tool for several minutes to warm
it up. Switchoff and unplugthe tool. Remove
the crank cap using
a Makita lock nut wrench 28 (optional accessory). 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. Wipe out the old grease inside and replace with
a fresh grease
(20 g; 2/3 oz). Use only Makita genuine grease (optional accessory). Fillingwith more
than the specified amount of grease (approx. 20g; 2/3
02) can cause faulty hammering
action or tool failure. Fill only with the specified amount of grease. Reinstall the crank
cap and tighten with the lock nut wrench.
Do nottighten the crank cap excessively. It is
madeof resinand is subject to breakage.
I I
Replacingcarbon brushes
When the resin insulating tip inside the
carbon brush is exposed to contact the
commutator,
it will automatically shut off
the motor. When this occurs, both carbon
brushes should be replaced
at the same
time. Use only identical carbon brushes.
Insulatingtip
7-
Commutat
Carbon brush
JL
7

Use a screwdriver to remove the rear cover
as shown inthe figure.
Use
a screwdriver to remove the brush
holder caps. Take out the worn carbon
brushes, insert the new ones and secure the
brush holdercaps.
To maintain product SAFETY and RELIABILITY, repairs, any other maintenance
o*
adjustment should be performed by Makita Authorized or Factory Service Centers,
always using Makitareplacementparts.
8

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
accessories or attachments should be usedonly inthe proper and intended manner.
Part No.
798265-3
798264-5
0 Scalingchisel
Size (mm)
30 (1-3/16") x 150(5-7/8")
50 (2")
x 150 (5-7/8")
Bull point
Part No. 798266-1
0 Scraper assembly
Part No. 122349-9
Hammer grease
Part No. 181490-7
0 Grooving chisel
Safety goggles
Part No. 191686-2
Steel carrying case
Part No. 181856-1
Part No.
1 Size (mm)
798277-6 1
8 (5/16") x 170 (6-11/16")
~~~
798276-8 I 12 (1/2") x 170 (6-11116")
0 Hex wrench
Part No. 783203-8
Lock nut wrench 28
Part No. 782402-9
Dust cover
Part No.423154-0
9

POWER SCRAPER
Model HK1810
Note: The switch, noise suppressor and other part configurations
may differ from country to country.
10

MOOEL HK1810 Mar -15 -'89 US
I:$ A.,, DESCRIPTION I:$ AtD DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
-
Hex Bolt M6x46
Flat Washer 8
Tool Retainer
Barrel Cover
Steel
Ball 5 6
Compression Spring 3
Tool Holder
Crank Cap
0 Ring 44
Pin 6
Rod
Needle
Bearing 810
Crank Shaft
Woodruff
Key 3
Ball Bearing 6002LLB
0 Ring 32
011 Seal 15
Crank Housing
Flat Washer 15
Helicai Gear 36
Retaining Ring S-12
Needle Bearing 1010
Gear Housing
Rubber Pin 6
Ball Bearing 6001LLB
Flat Washer 12
P1StO"
0 Ring 19
0 Ring 19
Striker
Ring 28
Impact
Bolt
0 Ring 12
0 Ring 12
Cylinder Liner 24
Pin 6
Cushion Plate
38
39
40
41
42
44
45
46
41
48
49
50
51
52
53
54
55
56
57
58
59
61
62
63
64
65
66
67
70
71
72
73
74
75
76
77
1
1
I
1
1
4
1
1
1
1
1
1
1
2
1
1
2
2
1
2
4
4
1
3
2
1
1
1
1
1
1
2
1
2
1
1
0 Ring 19
Compression
Spring 24
Flat Washer 25
0 Ring 39
Barrel
Hex Socket Head Bolt M6x25 IWith Washerl
Fan 67
ARMATURE ASSEMBLY
IWith
Item 25 26 & 45 - 481
ln~ulation Washer
Ball Bearing 608LB
Rubber Pin 4
Baffle Plate
FIELDASSEMBLY
Pan Head Screw M4x40 IWith Washer .% Bond1
Motor
Housing
Name Plate
Carbon Brush
Brush
Holder Cap
Real Cove!
Pan Head Screw M5x12 IWith Washer1
Hex Socket Head Bolt M6x45
Flat Washer 6
Label
Pan Head Screw M5x25 IWith Washerl
Pan Head Screw M6xl8 lWith Washer1
Dust
Cover
Switch
Handle Set IWithItem 741
Cord
Guard
Cord
Strain Relief
Pan Head Screw M4x18 IWith Washer)
Handle Set IWith Item 671
Pan Head Screw M6x25 lWnh Washerl
0 Ring 19
Dust Cover
Note The switch and other part specifications may differ
from Country to Country
11

P
MAKCTA LIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thorou ly inspected and tested before leaving the factory. It is warranted to
be free of defects from workdsh, 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.
This Warranty does not 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 to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTALOR CON-
SEQUENTIAL DAMAGES FROM THE SALE OR USE OFTHE 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 THEONE-YEAR TERM OFTHISWARRANTY.
This Warranty eves
YOU sDecific ledriehts. and YOU mav also have other riehts which varv from
state
10 state -$om; states do notallow the exclusion o;limitation of incidental or conseqhential
damages,
so the above Imitation 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-cho,
Anjo, Aichi
446 Japan
8834838069
PRINTED IN JAPAN
1995 -3- N