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T ECHNICAL INFORMATION
Model No. 7104L
PRODUCT
P1/9
Description Chain Mortiser
CONCEPT AND MAIN APPLICATIONS
Based on the current model 7104L, its specifications have been upgraded
to meet the European standards. The front cover has been added H
to enclose the cutter chain. Some electrical parts have been changed to
comply with the electromagnetic compatibility-requirement.
This tool is ideal for making mortises and notches quickly. Pivoting chain
bar enables an opearator to make a 130mm long rectangular hole in
L
three cutting processes without reclamping a workpiece. W
Except for Europe, Australia and New Zealand, the current specifications
Dimensions: mm
have been continued.
Length (L) 512 (20-1/8)
Width (W) 298 (11-3/4)
Height (H) 513 (20-1/4)
Specifications
Continuous Rating (W)
Voltage (V) Current (A) Cycle (Hz) Max. Output(W)
Input Output
240 5 50/60 1,140 780 1,500
110 10 50/60 1,050 680 1,300
230 5.2 50/60 1,140 780 1,500
No load speed: min-1=rpm 3,200
France: 30 (1-3/16)
Chain blade: mm (")
Other countries: 16.5 (5/8)
longitudinal 130 (5-1/8)
Max mortise width France: 45 (1-3/4)
transverse
Capacity: Other countries: 31.5 (1-1/4)
mm (") Max mortise depth 155 (6-1/8)
Max clamp capacity 308 (12-1/8)
Protection against electric shock Grounding
Power supply cord: m (ft) 5.0 (16.4)
Net weight: kg (") 17 (37.5)
Standard equipment
Chain blade 16.5mm (5/8")* ...... 1 pc
Wrench 13-17 ............................. 1 pc
Oil vessel ..................................... 1 pc
*France: 30mm (1-3/16")
Note: The standard equipment for the tool shown above may differ from country to country.
Optional accessories
Sharpening holder ass'y
Cutter chain: 15mm (9/16"), 16.5mm (5/8"), 18mm (11/16"), 21mm (13/16") and 24mm (15/16").
**30mm (1-3/16")
**Sprocket 4 for 30mm cutter chain
**Chain bar ass'y for 30mm cutter chain
(**marks: These accessories should be used at the same time. See next page for the detail.)
P2/9
Features and benefits
Equipped with Front Cover Max Mortise Depth: 155mm (6-1/8")
for Compliance with
the European Standards
(for Europe, Australia and
New Zealand only)
Easy-to-Operate Large Clamp Unique Pivoting Chain Bar
Allows operator to set up the machine Pivots to three plunge positions,
quickly and firmly to workpiece up to enabling to make a square hole up to
308mm (12-1/8") thick. 130mm (5-1/8") transverse width
without remounting the machine.
How to use 30mm cutter chain (except France)
Pay attention to the direction.
Cutter chain 16.5 Cutter chain 30.0
(A-16570) (A-16617)
Sprocket 4 (221501-7) Sprocket 4 (221502-5)
Ring 15 (257017-6) Remove Ring 15
from the machine.
Put 0.12g of adhesive (Three bond 1342) Put 0.10g of adhesive (Three bond 1342)
on the threads. on the threads.
Chain bar ass'y F/15-24mm (133571-3) Chain bar ass'y (122235-4)
Comparison of products
Makita Competitor A
Model
Specifications 7104L KC100 Model A
Continuous rating input: W 1,140 2,000 1,350
No load speed: min-1=rpm 3,200 4,500 3,400
longitudinal 130 (5-1/8) 50 (2) 125 (4-7/8)
Capacity:
Max mortise width
mm (")
transverse 31.5 (1-1/4)* 25 (1) 30 (1-3/16)
Max mortise depth 155 (6-1/8) 100 (3-15/16) 155 (6-1/8)
Max clamp capacity 308 (12-1/8) ---- 185 (7-1/4)
Type of base Clamp Flat base + Fence Clamp
Protection against electric shock Grounding Double insulation Grounding
Power supply cord: m 5.0 (16.4) 8.0 (26.3) 2.5 (8.2)
Length 512 (20-1/8) 300 (11-3/4) 540 (21-1/4)
Dimensions: mm (") Width 298 (11-3/4) 340 (13-3/8) 360 (14-1/8)
Height 513 (20-1/4) 440 (17-1/4) 390 (15-3/8)
Net weight: kg (lbs) 17 (37.5) 14 (30.9) 16 (35.3)
Chain blade 16.5mm** Chain blade 30mm Chain blade 16.5mm
Standard equipment Wrench Chain guide Wrench
Oil vessel Wrench
*Transverse width = blade width plus 15mm; therefore, 45mm (1-3/4") for France
**France: 30mm (1-3/4")
P3/9
Repair
CAUTION: For safety before repair/maintenance;
1)Unplug machine. 2)Remove cutter chain, chain bar, Hex. bolt M10 and Washers.
[1] NECESSARY REPAIRING TOOLS
Code No. Description Use for
1R275 Type 94 field insert jig Removing Sprocket 4
1R045 Gear extractor, large Holding Sprocket 4 to unscrew Hex nut M10
1R308 Spring pin extractor 4.0 Removing 4.0mm diameter Spring pins
1R309 Spring pin extractor 5.0 Removing 5.0mm diameter Spring pins
1R310 Spring pin extractor 6.0 Removing 6.0mm diameter Spring pins
[2] LUBRICATION
See Fig. 1.
1. Apply 10g of Makita grease N No.1 for the teeth of Helical gear 47 and put some amount of Makita grease N No.1 on
the rubbing surfaces of Motor housing complete and Rotor holder for their smooth pivot action. Refer to marks.
2. Put a little amount of machine oil on Spring pin 5-40, two slide poles of Base complete, the threads of M14 Screw,
inside of Ring 9 and both sides of Sleeve 9 near Clamp lever, the inside of Sleeve 9 near Lever B complete, Slide bar
and Guide pole. Refer to marks.
3. Put a little amount of adhesive on the threads of M6x12 + Countersunk head screw for setting Ball bearing 1008LL to
Chain bar. Refer to marks.
Fig. 1
Makita grease N No.1 (Part No. 042017-7A, 2.5kg/set)
Machine oil
Adhesive: 0.12g Three bond 1342
(Makita Neji lock super TB1342:
Part No. 045017-6A)
Spring pin 5-40
Chain bar
+ Countersunk
head screw M6x12
Motor housing
complete
Ball bearing
1008LL
Slide poles of Base complete
Helical gear 47
Rotor holder
Screw M14
Ring 9: Inside
Clamp lever
Sleeve 9: Inside and outside
Slide bar
Lever B complete
Sleeve 9: Inside
Guide pole
P4/9
Repair
[3] Repairing Motor Section
Armature and Field can be replaced without disassembling Gear housing section.
[3]-1. Disassembling Motor Section
Remove Carbon brushes from the machine.
Motor housing complete can turn freely by separating four M5x80 pan head screws from the machine.
However, the last one is difficult to be unscrewed because the tensile force of Tension spring 20 affects it through Chain
bar holder and Rotor holder. Therefore, push Handle to counterclockwise direction as mentioned in Fig. 1 to remove the
last M5x80 pan head screw.
Next, Turning Motor housing complete clockwise as shown in Fig. 2 so that the tensile force of Tension spring 20 can be
removed.
Fig. 1 Fig. 2
Handle (switch installation side) Rotor holder
Four Pan head screws M5x80
Turn the Motor
housing complete
in the direction of
arrow.
Tension
Push the Handle Spring 20
in the direction of
arrow.
Chain bar holder
Fig. 3
Strike one end of Spring pin 5-12 using Spring pin extractor 5.0 Hook of Rotor holder One end of Spring pin 5-12
(Makita part No. 1R309) and plastic hammer as shown in Fig. 3 for Tension spring 20
until the other end comes out of the hook of Rotor holder.
And then, pull out the Spring pin 5-12 from the opposite side Spring pin
using pliers. Pull out Motor housing complete backward while extractor 5.0
turning it. Move on to the step for Motor replacement.
Motor
housing
Spring pin 5-12 for the stopper
Plastic hammer of Tension spring 20
[3]-2. Reassembling Motor Section
Perform the disassembling procedure in reverse of the assembling steps.
The reassembling work can be successfully performed even if Tension spring 20 shrinks to the original size.
Drive Spring pin 5-20 into the hole of Rotor holder's hook upward from the bottom so that the upper end protrudes by 4mm
for the stopper of Tension spring 20. Install Armature from Chain bar holder side. It is useful as a guide when Motor
housing complete is installed.
Hook one end of Tension spring 20 in the hole of Grip holder L as shown in Fig. 4 after inserting Motor housing section in
Rotor holder. Chain cover should be vertical against ground. And both Motor housing and Rotor holder should be paralleled
to the ground while pulling Tension spring 20 using Handle as described in Fig. 5. At this time, while pressing Motor
housing section with knee, tighten four M5x80 pan head screws. This is to prevent the Motor housing section from slipping
off.
Fig. 4 Fig. 5
Grip holder L Press Motor housing with knee. Check these flat
areas is parallel
One end of Tension Spring 20 to the ground.
Motor housing
Hook of Rotor holder
for Tension spring 20
Push Handle to Chain bar holder
Spring pin 5-12 for the stopper
the direction of should be vertical
of Tension spring 20
arrow. against ground.
The other end of Tension Spring 20
P5/9
Repair
Fig. 6
[4] Disassembling Gear Section
Type 94 Field insert jig
Note: Gear section can be replaced without disassembling Motor section.
Remove four M5x80 pan head screws in the front of the tool in the same manner Sprocket 4 Wall of Chain
described in Repairing Motor Section. bar holder
To release the tensile force of Tension spring 20, Turn the Motor housing clockwise.
The tension spring 20 will return to the original size. Consequently, Motor housing
complete can be easily removed.
Pull out Chain bar holder to your side from the front of tool while turning it.
Insert Type 94 Field insert jig (Makita part No. 1R275) between Sprocket 4 and the
wall of Chain bar holder in order not to revolve Spindle fixed with the Sprocket 4
as shown in Fig.6. Loosen M10 Hex. nut using Box wrench 17 or Wrench 13-17.
Loosen M10 Hex. nut using Box
Remove Spring washer 10, Flat washer 10 and Ring 15 from Spindle by hand. wrench 17.
Remove Sprocket 4 from tool by hand. If it is stuck on the spindle firmly, use Gear extractor Large (Makita part No. 1R045).
Strike the reverse side of Chain bar holder using plastic hammer, so Gear housing can be separated from Chain bar holder.
The connecting parts of Chain bar holder and Gear housing are three Spring pins 6-24 only.
Remove gear section from Gear housing, and then tap the gear section on the table to separate Helical gear 47 from the
other components of the gear section.
[5] Disassembling Vice Element
Vice element can be pulled out only by loosening Lever 98 ass'y as illustrated in Fig. 7. If chips attach in the Compression
spring 48 and Compression spring 36, the chips make the clamp operation worse. Therefore, disassemble and clean them.
Loosen M6x35 Pan head screw to remove the Compression springs using cordless impact driver with phillips bit No.3 as
mentioned in Fig. 8 while holding Vice shoe so as not to jump by the reaction force of the Compression springs.
Fig. 7 Fig. 8
Cordless impact drive with phillips
Lever 98 assembly bit No.3
Vice shoe
Compression spring 48 and
Compression spring 36 (inside)
Vice element Vice element
Fig. 9
[6] Disassembling Front Vice
Main body including Base complete on vice section can be removed backward from
the Vice section in the following steps. Lever B complete
1) Disassemble Vice element in accordance with the above procedure.
2) Forward the main body to the edge of Screw M4 by turning Knob 20 as shown in
Screw M14
Fig. 9 .
Loosen two Levers in the direction of arrows as illustrated in Fig. 10. Knob 20
Push one end of Spring pin at the right side of Lever B complete using Spring pin Vice section
extractor 4.0 (Makita part No. 1R308) and plastic hammer.
Consequently, Pin 9 and some components can be separated as described in Fig. 11.
Fig. 10 Fig. 11
Spring pin extractor 4.0
Lever B complete
Plastic hammer
Flat washer 9 Pin 9
Lever Sleeve 9 (inside)
(Lever B complete)
Spring pin 4-20 Flat washer 9
(left side) Sleeve 9
Lever (Clamp)
Spring pin 4-20 (right side)
P6/9
Repair
Fig. 12
When removing M14 Screw from the front vice section;
1) Press the end of M4 Screw against table to compress Spring pin extractor 4.0
Compression spring 10. Plastic hammer
2) At the same time, push out 4-20 Spring pin in M14 Screw
using Spring pin extractor 4.0 (Makita part No. 1R308). Spring pin 4x20
See Fig. 12.
M14 Screw
Table
[7] Adjustment
Note: The following information applies to the products including 16.5mm cutter chain as the standard accessory.
1) Fix an yellow colored Indication plate to Base complete with M4x8 pan head screw as shown in Fig. 13 after aligning
the front edge of the Indication plate with front end of 16.5mm cutter chain.
2) When aligning the center of + Countersunk head screw M6x12 with the bottom of Base complete, drive Stopper pole
into the Base complete by hand in order to adjust the height of Rotor holder at ZERO position on Stopper pole as
shown in Fig. 14. After positioning it, tighten M8 Hex. nut onto the hole of Base complete firmly using Wrench.
Note: Face the gauge of Stopper pole to outside before tihgtening M8 Hex. nut.
3) Align the left end of Scale plate with the left end of the cutter chain by resetting the scale plate on the Base complete.
See Fig. 15.
Fig. 13
Indication plate
Slide Indication plate
backward or forward.
Pan head screw M4x8
0 2 4 5 6
Bottom of Base
complete
Front edge of Indication Front end of 16.5mm
plate (yellow) cutter chain
Fig. 14
Center of + Countersunk
head screw M6x12
Rotor holder
Hex. nut M8 Threads of the "ZERO" mark
Stopper pole Gauge of the Stopper
Stopper pole pole
Fig. 15
5 6 8
Left end of 16.5mm
cutter chain
Scale plate
Base complete
0 2 4 5 6
Left end of Scale plate
P7/9
Repair
4) Refer to Fig. 16, Fig. 17, Fig. 18 and Fig. 19.
Precisely adjust M8x44 Hex. bolts and Stopper to make a rectangular hole with the same size into the wooden workpiece
as illustrated in Fig. 20. When the machine with 16.5mm cutter chain is used, Fig. 20 shows the cutting size preset in
Makita plant. Meanwhile, if preferring to make a 30mm long rectangular hole, adjust M8x44 Hex. bolt for No. 2 set
position to lean Chain bar assembly to the limit.
Fig. 16 Fig. 17 Fig. 18
Lever C is hooked on rib of Rotor holder Tip of M8x44 Hex. bolt for No.1 set position Tip of M8x44 Hex. bolt for No.2 set
directly as below. It is original position is hooked on rib of Rotor holder directly. It is position is stuck with Lever C directly.
of Chain bar. No.1 set position of Chain bar. It is No.2 set position of Chain bar.
Lever C
Rib of Rotor
holder
Lever C
M8x44 Hex. bolt M8x44 Hex. bolt for
Rib of Rotor holder
for No.1 set position No.2 set position
Original position (vertical against ground) No.1 set position of Chain bar No.2 set position of Chain bar
Fig. 19
Stopper Lever B complete
If the travel distance is set at 13.5mm by shifting Lever B complete forward,
a 16.5mm wide rectangular hole can be cut in a single stroke.
Total 30.0mm wide holes can be made after shifting Lever B complete backward
and repeating a single stroke.
13.5mm
Fig. 20
1. Cutting by a single stroke
at vertical position.
2. Cutting by each stroke at:
1)vertical position and No.1 set position when Lever B complete is shifted forward.
2)vertical position and No.1 set position after Lever B complete is shifted backward.
Total four strokes
Approx. 52mm
16.5mm
30mm
90mm
120mm
3. Cutting by each stroke at:
1)vertical position, No.1 set position and No. 2 set position when Lever B complete is shifted forward.
2)vertical position, No.1 set position and No. 2 set position after Lever B complete is shifted backward.
Total six strokes
Fig. 21
5) Adjust the tension of 16.5mm cutter chain. When there is a clearance of
approx. 5 up to 6mm between the chain bar and the cutter chain, the tension Chain bar Cutter chain
on the cutter chain is adequate. See Fig. 21.
Note: Do not touch the cutting edges of the cutter chain when pulling it.
6) Adjust the clearance between Chain bar holder and Rotor holder so that 5 up to 6mm
Chain bar ass'y can be tilted smoothly without stuck by moving the tips of
three M5X16 Hex. bolts backward and forward.
P8/9
Wiring diagram
[1] Connecting Lead Wire to Ring Terminal
Route Field lead wire to inside of Polyolefin tube. And then shrink the Polyolefin tube on the end of Ring terminal retainer
to cover the clamping position of the Ring terminal retainer to Field lead wire. See Fig. 22.
Fig. 22
Ring terminal retainer
Ring terminal
Field lead wire Polyolefin tube
[2] Connecting Earth Terminals for Machine and Noise Suppressor
Connect Earth terminals with Motor housing so that each direction is the same as illustrated in Fig. 23.
Fig. 24
Earth terminals
Earth lead wire for machine
(yellow and green)
Earth lead wire of Noise suppressor
(transparent)
Field Lead wires
(110V: water blue, 220-240V: blue or red)
[3] Wiring in Handle at Switch Installation Side
See Fig. 24 below.
Fig. 23
Slacken earth lead wire between motor housing
and terminal block as illustrated.
Handle
Terminal Do not route any lead wires onto the rib
Earth lead wire between motor housing block for Terminal block.
and terminal block should ride on the
other lead wires and insert into lead wire
holder.
Lead wire holder
Noise suppressor Connector
Line coil
Slacken earth lead wire of power supply
cord as illustrated.
Place line coil, noise suppressor and connector in
the dot circle. After placing Noise suppressor,
install Line coil.
P9/9
Circuit diagram
Switch
220-240V: black
110V: water blue
Field 220-240V: blue or red 220-240V: black
110V: water blue 110V: white
Terminal
block
black
yellow and green transparent black 220-240V: blue
110V: white
Noise Line coil
suppressor
Earth terminals
Mount ring terminal
at the penetration side of Field lead wire.
220-240V: blue
110V: water blue
Power supply cord