Makita JS8000 User manual

1
ENGLISH
INSTRUCTION MANUAL
DOUBLE INSULATION
WARNING:
For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
Cement Shear
JS8000
007430

2
ENGLISH
SPECIFICATIONS
Model JS8000
Max. cutting capacities Fiber cement material 8 mm
Strokes per minute (min-1) 0 - 2,500
Overall length 346 mm
Net weight 2.1 kg
Safety class /II
• Due to our continuing programme of research and development, the specifications herein are subject to change without notice.
• Note: Specifications may differ from country to country.
END201-2
Symbols
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
･Read instruction manual.
･DOUBLE INSULATION
･Only for EU countries
Do not dispose of electric equipment
together with household waste material!
In observance of European Directive
2002/96/EC on waste electric and
electronic equipment and its
implementation in accordance with
national law, electric equipment that
have reached the end of their life must
be collected separately and returned to
an environmentally compatible
recycling facility.
ENE065-1
Intended use
The tool is intended for cutting fiber cement material
only.
ENF002-1
Power supply
The tool should be connected only to a power supply of
the same voltage as indicated on the nameplate, and
can only be operated on single-phase AC supply. They
are double-insulated in accordance with European
Standard and can, therefore, also be used from sockets
without earth wire.
ENG003-2
For European countries only
Noise and Vibration
The typical A-weighted sound pressure level is 82 dB (A).
Uncertainty is 3 dB(A).
The noise level under working may exceed 85 dB (A).
Wear ear protection.
The typical weighted root mean square acceleration
value is not more than 2.5 m/s2.
These values have been obtained according to
EN60745.
ENH101-7
EC-DECLARATION OF CONFORMITY
Model; JS8000
We declare under our sole responsibility that this
product is in compliance with the following standards of
standardized documents;
EN60745, EN55014, EN61000 in accordance with
Council Directives, 2004/108/EC, 98/37/EC.
CE2006
000230
Tomoyasu Kato
Director
Responsible Manufacturer:
Makita Corporation
3-11-8, Sumiyoshi-cho, Anjo, Aichi, JAPAN
Authorized Representative in Europe:
Makita International Europe Ltd.
Michigan Drive, Tongwell, Milton Keynes, Bucks MK15
8JD, ENGLAND
GEA001-3
GENERAL SAFETY RULES
WARNING! Read all instructions. Failure to follow all
instructions listed below may result in electric shock, fire
and/or serious injury. The term "power tool" in all of the
warnings listed below refers to your mains-operated
(corded) power tool or battery-operated (cordless) power
tool.
SAVE THESE INSTRUCTIONS.
Work area safety
1. Keep work area clean and well lit. Cluttered and
dark areas invite accidents.
2. Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools
create sparks which may ignite the dust or fumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.

3
Electrical Safety
4. Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodified plugs and matching outlets will
reduce risk of electric shock.
5. Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of
electric shock if your body is earthed or grounded.
6. Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
7. Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords
increase the risk of electric shock.
8. When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electric shock.
Personal Safety
9. Stay alert, watch what you are doing and use
common sense when operating a power tool.
Do not use a power tool while you are tired or
under the influence of drugs, alcohol or
medication. A moment of inattention while
operating power tools may result in serious
personal injury.
10. Use safety equipment. Always wear eye
protection. Safety equipment such as dust mask,
non-skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will
reduce personal injuries.
11. Avoid accidental starting. Ensure the switch is
in the off-position before plugging in. Carrying
power tools with your finger on the switch or
plugging in power tools that have the switch on
invites accidents.
12. Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key left
attached to a rotating part of the power tool may
result in personal injury.
13. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
14. Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes,
jewellery or long hair can be caught in moving
parts.
15. If devices are provided for the connection of
dust extraction and collection facilities,
ensure these are connected and properly used.
Use of these devices can reduce dust-related
hazards.
Power tool use and care
16. Do not force the power tool. Use the correct
power tool for your application. The correct
power tool will do the job better and safer at the
rate for which it was designed.
17. Do not use the power tool if the switch does
not turn it on and off. Any power tool that cannot
be controlled with the switch is dangerous and
must be repaired.
18. Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk of
starting the power tool accidentally.
19. Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool. Power tools are
dangerous in the hands of untrained users.
20. Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
and any other condition that may affect the
power tools operation. If damaged, have the
power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
21. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
22. Use the power tool, accessories and tool bits
etc. in accordance with these instructions and
in the manner intended for the particular type
of power tool, taking into account the working
conditions and the work to be performed. Use
of the power tool for operations different from
those intended could result in a hazardous
situation.
SERVICE
23. Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
24. Follow instruction for lubricating and
changing accessories.
25. Keep handles dry, clean and free from oil and
grease.
GEB032-1
SPECIFIC SAFETY RULES
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to cement shear safety rules. If you use this power
tool unsafely or incorrectly, you can suffer serious

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personal injury.
1. Hold the tool firmly.
2. Secure the workpiece firmly.
3. Keep hands away from moving parts.
4. Edges and chips of the workpiece are sharp.
Wear gloves. It is also recommended that you
put on thickly bottomed shoes to prevent
injury.
5. Do not put the tool on the chips of the
workpiece. Otherwise it can cause damage
and trouble on the tool.
6. Do not leave the tool running. Operate the tool
only when hand-held.
7. Always be sure you have a firm footing.
Be sure no one is below when using the tool in
high locations.
8. Do not touch the blade or the workpiece
immediately after operation; they may be
extremely hot and could burn your skin.
9. Avoid cutting electrical wires. It can cause
serious accident by electric shock.
10. Some material contains chemicals which may
be toxic. Take caution to prevent dust
inhalation and skin contact. Follow material
supplier safety data.
11. Always use the correct dust mask/respirator
for the material and application you are
working with.
SAVE THESE INSTRUCTIONS.
WARNING:
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.
FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on
the tool.
Switch action
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004668
CAUTION:
• Before plugging in the tool, always check to see
that the switch trigger actuates properly and
returns to the "OFF" position when released.
To start the tool, simply pull the switch trigger. Tool
speed is increased by increasing pressure on the switch
trigger. Release the switch trigger to stop.
For continuous operation, pull the switch trigger and
then push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
Hook
The hook is convenient for temporary hanging the tool.
When using the hook, pull it out in ''A'' direction and then
push it in ''B'' direction to secure in place.
1
A
004676
B
004677
When not using the hook, return it back to its initial
position by following the above procedures in reverse.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Replacement of blades
CAUTION:
• Never remove the blades with bare hands. Wear
gloves. Otherwise it can cause injury.
1. Hook
1. Switch trigger
2. Lock button

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Removing cutting head
1
2
3
4
007431
Use the hex wrench to loosen the three screws which
secure the cutting head. Pull the cutting head straight
out to remove it with turning it left and right alternately.
Removing shear blades
1
2
3
4
5
007432
Remove the two screws (middle and front) which hold
the cutting head. When removing the middle screw, be
careful not to lose the spacer. Then the blades can be
removed easily. When removing the blades, hold the
blades, the spacer and the pivot sleeve so that they do
not fall from the cutting head.
Installing shear blades
1
23
4
5
007433
Install the spacer and the pivot sleeve and tighten the
three screws after inserting the center blade, side blades
into the cutting head. In this process, the screw heads
should be protruding 2 - 3 mm from the cutting head
surface.
If you will tighten the screws excessively, the cutting
head cannot be installed to the tool.
NOTE:
• Side blade edge can be used in four ways by
repositioning them left-to-right and end-to-end as
shown in the figure.
The following describes time and procedure to change
blades.
A) When the two side blades have rounded about half
their width, they can be repositioned left-to-right for new
cutting edges.
B) When both edges of each side blade have rounded
about half their width, reposition them end-to-end for two
new cutting edges.
C) When all edges have worn down, obtain
replacements from Makita authorized or factory service
center.
D) When side blades are worn out, the center blade
should also be replaced.
1
2
007435
Installing cutting head
1
2
3
007436
CAUTION:
• Secure the cutting head firmly. Otherwise it can
rotate during operation and can cause serious
injury.
Insert the cutting head into the tool with turning it left and
right alternately. Then tighten the three screws with the
hex wrench.
OPERATION
CAUTION:
• This tool is intended for cutting fiber cement
material only, with a thickness of 8 mm or less. Do
not cut other materials or stack-cut. Doing so will
damage the tool and void warranty.
• Wear gloves. Otherwise it can cause injury.
1. Hex wrench
2. Tighten
3. Screws
1. Reposition
end-to-end
2. Reposition
left-to-right
1. Side blade
2. Center blade
3. Side blade
4. Pivot sleeve
5. Spacer
1. Side blade
2. Center blade
3. Screws
4. Side blade
5. Cutting head
1. Hex wrench
2. Loosen
3. Screws
4. Cutting head

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Secure the workpiece firmly. Move the tool forward
keeping the side blades flush with the workpiece
surface.
007434
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection
or maintenance.
Lubrication
1
23
4
5
007433
Before operation, lubricate the contact point of the
center blade and the side blades. And, also lubricate
around the pivot sleeve and the spacer.
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by
Makita Authorized Service Centers, always using Makita
replacement parts.
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. Only use accessory or
attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Center blade
• Side blades
• Hex wrench
1. Side blade
2. Center blade
3. Side blade
4. Pivot sleeve
5. Spacer

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Makita Corporation Anjo, Aichi, Japan
884685-224