Makita 7104L User manual

1
ENGLISH (Original instructions)
INSTRUCTION MANUAL
IMPORTANT: Read Before Using.
Chain Mortiser
7104L
006289

2
ENGLISH (Original instructions)
SPECIFICATIONS
Model 7104L
Max. hole length (Longitudinal) 130 mm
Capacities Max. hole depth 155 mm
Width of applicable workpiece 80 mm - 308 mm
Chain speed 300 m / min
Dimensions (L × W × H) 512 mm × 298 mm × 513 mm
Net weight 17.3 kg
Safety class Class I
• Due to our continuing programme of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003
END224-1
Symbols
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
･Read instruction manual.
･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.
ENE062-1
Intended use
The tool is intended for cutting mortise in wood.
ENF001-1
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. This
tool should be grounded while in use to protect the
operator from electric shock. Use only three-wire
extension cords which have three-prong grounding-type
plugs and three-pole receptacles which accept the tool's
plug.
ENG905-1
Noise
The typical A-weighted noise level determined according
to EN61029:
Sound pressure level (LpA) : 90 dB(A)
Sound power level (LWA) : 103 dB(A)
Uncertainty (K) : 3 dB(A)
Wear ear protection
ENG900-1
Vibration
The vibration total value (tri-axial vector sum)
determined according to EN61029:
Vibration emission (ah) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
ENG901-1
• The declared vibration emission value has been
measured in accordance with the standard test
method and may be used for comparing one tool
with another.
• The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the
power tool can differ from the declared emission
value depending on the ways in which the tool is
used.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of
exposure in the actual conditions of use (taking
account of all parts of the operating cycle such as
the times when the tool is switched off and when it
is running idle in addition to the trigger time).

3
ENH003-13
For European countries only
EC Declaration of Conformity
We Makita Corporation as the responsible
manufacturer declare that the following Makita
machine(s):
Designation of Machine:
Chain Mortiser
Model No./ Type: 7104L
are of series production and
Conforms to the following European Directives:
2006/42/EC
And are manufactured in accordance with the following
standards or standardised documents:
EN61029
The technical documentation is kept by our authorised
representative in Europe who is:
Makita International Europe Ltd.
Michigan Drive, Tongwell,
Milton Keynes, Bucks MK15 8JD, England
30.1.2009
000230
Tomoyasu Kato
Director
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi, 446-8502, JAPAN
GEA005-3
General Power Tool Safety
Warnings
WARNING Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
serious injury.
Save all warnings and
instructions for future reference.
The term "power tool" in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Work area safety
1. Keep work area clean and well lit. Cluttered or
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.
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.
9. If operating a power tool in a damp location is
unavoidable, use a residual current device
(RCD) protected supply. Use of an RCD reduces
the risk of electric shock.
10. Use of power supply via a RCD with a rated
residual current of 30mA or less is always
recommended.
Personal safety
11. 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.
12. Use personal protective equipment. Always
wear eye protection. Protective equipment such
as dust mask, non-skid safety shoes, hard hat, or
hearing protection used for appropriate conditions
will reduce personal injuries.
13. Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool. Carrying power tools
with your finger on the switch or energising power
tools that have the switch on invites accidents.
14. 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.
15. Do not overreach. Keep proper footing and
balance at all times. This enables better control

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of the power tool in unexpected situations.
16. 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.
17.
If devices are provided for the connection of
dust extraction and collection facilities, ensure
these are connected and properly used.
Use of
dust collection can reduce dust-related hazards.
Power tool use and care
18. 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.
19. 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.
20. 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.
21. 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.
22. Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
and any other condition that may affect the
power tool’s operation. If damaged, have the
power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
23. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
24. Use the power tool, accessories and tool bits
etc. in accordance with these instructions,
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
25. 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.
26. Follow instruction for lubricating and
changing accessories.
27. Keep handles dry, clean and free from oil and
grease.
ENB093-1
ADDITIONAL SAFETY RULES
1. Use this tool only to cut holes in wood.
2. This tool is for cutting holes in flat-surfaced
wood. Never use it for cutting holes in a log.
3. Wear ear protectors.
4. Handle the cutter chain carefully; it is very
sharp.
5. Place the workpiece on wood blocks or short
beams to prevent the cutter chain from hitting
the ground, floor, etc., causing damage to the
cutter chain at the time of hole breakthrough.
6. Check the cutter chain carefully for cracks or
damage before operation.
Replace cracked or damaged cutter chain
immediately.
7. Secure the tool to the workpiece firmly.
8. Inspect for and remove nails or foreign matter
from the workpiece before operation.
9. Do not operate the tool with the safety cover
open.
10. Do not wear gloves during operation.
11. Keep hands away from moving parts.
12. Remove the tool from the workpiece after
operation to keep it from falling off and
possibly causing injury.
13. Do not abuse cord. Never yank cord to
disconnect it from the receptacle. Keep cord
away from heat, oil, water and sharp edges.
14. PROPER GROUNDING. This tool should be
grounding while in use to protect the operator
from electric shock.
15. EXTENSION CORDS. Use only three-wire
extension cords which have three-prong
grounding-type plugs and three-pole
receptacles which accept the tool’s plug.
Replace or repair damaged or worn cord
immediately.
SAVE THESE INSTRUCTIONS.

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FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on
the tool.
Adjusting depth of cut
1
2
3
005999
Loosen the wing bolt on the stopper. Move the stopper to
the desired position and tighten the wing bolt. When
tightened, the tip of the wing bolts should contact the flat
surface of the stopper pole. The numbers indicated on
the stopper pole are in cm units (3 mm per graduation).
Switch action
1
2
006300
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 prevent the switch trigger from being accidentally
pulled, a lock-off button is provided. To start the tool,
push in the lock-off button and pull the switch trigger.
Release the switch trigger to stop.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing or removing cutter chain
1
2
3
4
006290
WARNING:
• Always be sure that the tool is switched off and
unplugged before installing or removing the
cutter chain.
• Always close the chain cover after installing,
removing or adjusting the cutter chain.
To install the cutter chain, open the chain cover. Loosen
the hex bolt securing the chain bar and the adjusting
screw.
Orient the cutters in the direction of the arrow on the tool
(rotational direction). Attach the cutter chain to the
sprocket first and then to the chain bar. Semi-tighten the
hex bolt.
1
2
3
006291
Turn the adjusting screw to increase the tension on the
cutter chain. Pull the middle of the cutter chain lightly.
When there is a clearance of approx. 5 - 6 mm between
the chain bar and the cutter chain, the tension on the
cutter chain is adequate.
5-6mm
006003
After adjusting the tension, tighten the hex bolt firmly to
secure the chain bar. Additionally tighten slightly the
adjusting screw. Close the chain cover.
To remove the cutter chain, follow the installation
procedures in reverse.
1. Arrow
2. Sprocket
3. Hex bolt
1. Adjusting screw
2. Chain bar
3. Chain cover
4. Hex bolt
1. Lock-off button
2. Switch trigger
1. Wing bolt
2. Stopper pole
3. Stopper

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Securing tool to workpiece
1
23
3-8mm
006004
12
006005
Loosen the vise lever and move the rear vise backward.
Place the tool on the workpiece so that the front vise
contacts the side of the workpiece. Move the rear vise
forward until the distance between the rear vise and the
workpiece is 3 - 8 mm. Tighten the vise lever to secure
the rear vise. Move the tool so that the "0" on the
indication plate is aligned with the cutting line (A). Push
the lever (A) down fully to secure the workpiece.
Turn the setting handle until the front edge of the yellow
indicator plate is aligned with the cutting line (B).
12
34
006006
OPERATION
1
006007
Grasp firmly the grips on either side. Switch on the tool
and wait until the cutter chain attains full speed. Then
release the hook and lower the tool head to cut in the
workpiece. Do not apply excessive pressure to the tool.
This may not only decrease the working efficiency but
also cause a dangerous reaction. Feed slowly at the
beginning of a cutting operation, at the time of hole
breakthrough and when cutting a knot in the workpiece.
After cutting, gently raise the tool head until you can
hook the tool head back onto the hook. Then switch off
the tool. Raise the lever (A) and remove the tool from the
workpiece.
WARNING:
• Always hook the tool head back onto the hook
when not operating the tool.
• Never attempt to cut a twisted or warped
workpiece which the tool is not secured firmly to.
Adjusting indicator plate and indication plate
The yellow indicator plate and indication plate are
factory adjusted for the standard equipped cutter chain
16.5 mm. If the alignment is off, for some reason, or
when using another size cutter chain, loosen the screws
and adjust the yellow indicator plate and indication plate.
Enlarging hole
1. Transverse (width) enlargement
1
2
3
4
006008
A hole can be enlarged transversely by adjusting the
gauge plate. Max. expansion of hole width is 15 mm.
Example:
When cutting a hole 25 mm wide using a
cutter chain 16.5 mm, proceed as follows:
• Push the lever (B) away from you.
Loosen the hex bolts securing the
gauge plate.
• Adjust the gauge plate so that the travel
distance (D) is 8.5 mm; that is, 25 mm -
16.5 mm = 8.5 mm. Tighten the hex
bolts to secure the gauge plate.
• Cut the first hole with the lever (B)
pushed away from you. Then pull the
lever (B) toward you and cut again to
enlarge the hole.
1. Hex bolts
2. Gauge plate
3. Travel distance
(D)
4. Lever (B)
1. Hook
1. Indicator plate
2. Indication plate
3. Cutting line (A)
4. Cutting line (B)
1. Setting handle
2. Front vise
1. Lever (A)
2. Vise lever
3. Rear vise

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NOTE:
• The gauge plate is factory adjusted for cutting a
hole 30 mm wide.
2. Longitudinal (length) enlargement
Hole length can be determined in three steps shown in
the table below.
Cutter chain position Hole length to be cut
Original position 52.5 mm
No.1 set position 52.5 mm - 105 mm
No.2 set position 77.5 mm - 130 mm
006562
NOTE:
• A hole a little longer than predetermined may be
cut depending upon the cutter chain tension.
• The adjusting hex bolts are factory adjusted for
cutting holes 90 mm long in the No.1 set position
and 120 mm long in the No.2 set position.
Push down the right-hand grip while raising the left-hand
grip. Make sure that the adjusting hex bolt slips into
place securely.
1
006009
Loosen the hex nut securing the adjusting hex bolt. Turn
the adjusting hex bolt until the cutter chain reaches the
desired position, then tighten the hex nut.
1
2
3
006010
WARNING:
• When using pressure to turn the adjusting hex bolt
or hex nut, be careful not to allow the adjusting hex
bolt to slip off the set position.
To bring the cutter chain back to the perpendicular
(original) position, pull the lever (C) toward you while
pressing down on the right-hand grip and slightly raising
the left-hand grip and move the cutter chain back to its
original position.
When cutting a hole, first use the perpendicular position,
then No.1 set position and finally No.2 set position.
Always safely hook the tool head back onto the hook
when changing the cutter chain position.
1
2
3
4
5
006011
When enlarging a hole both transversely and
longitudinally, cut the holes in the order indicated from
No.(1) to (6) as shown. This makes for more easy and
efficient hole enlargement.
1
(6) (5) (4)
(3) (2) (1)
006012
WARNING:
• Never attempt to enlarge a hole with the cutter
chain still within the hole. This will cause
unstable and dangerous operation.
• Never angle the cutter chain when cutting the first
hole, or a dangerous kickback may result. Always
have the cutter chain set to the perpendicular
position when cutting the first hole.
Lap joints up to 130 mm can be cut with this tool.
006013
NOTE:
• Lap joints can be cut only on the front (side away
from you) of the workpiece.
1. Front base
1. Original position
2. No.1 set
position
3. No.2 set
position
4. Indication plate
5. Ruler
1. Adjusting hex
bolt for No. 1 set
position
2. Lever (C)
3. Adjusting hex
bolt for No. 2 set
position
1. Lever (C)

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MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection
or maintenance.
• Never use gasoline, benzine, thinner, alcohol or
the like. Discoloration, deformation or cracks may
result.
Replacing carbon brushes
1
001145
Remove and check the carbon brushes regularly.
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.
1
2
006014
Lubrication
After use, remove dirt, chips and foreign matter adhering
to the tool. Then oil the moving parts (especially cutter
chain) and the contact portions.
To maintain product SAFETY and RELIABILITY, repairs,
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.
• Cutter chain
• Chain bar for 30 mm
• Sprocket 4 for 30 mm
• Oil supply (100 cc)
1. Brush holder
cap
2. Screwdriver
1. Limit mark

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Makita Corporation
Anjo, Aichi, Japan
www.makita.com
883685B221