Hitachi Koki C12LCH, C12LC, C12FCH User Manual
Compound Miter Saw
Model C12LCH • C12LC • C12FCH
Handling instructions
Note:
Before using this Electric Power Tool, carefully read through these
HANDLING INSTRUCTIONS to ensure efficient, safe operation. It is
recommended that these INSTRUCTIONS be kept readily available
as an important reference when using this power tool.
GENERAL OPERATIONAL PRECAUTIONS
WARNING! When using electric tools, basic safety
precautions should always be followed to reduce the risk
of fire, electric shock and personal injury, including the
following.
Read all these instructions before operating this product
and save these instructions.
For safe operations:
1. Keep work area clean. Cluttered areas and benches
invite injuries.
2. Consider work area environment. Do not expose
power tools to rain. Do not use power tools in damp
or wet locations. Keep work area well lit.
Do not use power tools where there is risk to cause
fire or explosion.
3. Guard against electric shock. Avoid body contact
with earthed or grounded surfaces (e.g. pipes,
radiators, ranges, refrigerators).
4. Keep children and infirm persons away. Do not let
visitors touch the tool or extension cord. All visitors
should be kept away from work area.
5. Store idle tools. When not in use, tools should be
stored in a dry, high or locked up place, out of reach
of children and infirm persons.
6. Do not force the tool. It will do the job better and
safer at the rate for which it was intended.
7. Use the right tool. Do not force small tools or
attachments to do the job of a heavy duty tool. Do
not use tools for purposes not intended; for example,
do not use circular saw to cut tree limbs or logs.
8. Dress properly. Do not wear loose clothing or
jewelry, they can be caught in moving parts. Rubber
gloves and non-skid footwear are recommended
when working outdoors. Wear protecting hair
covering to contain long hair.
9. Use eye protection. Also use face or dust mask if
the cutting operation is dusty.
10. Connect dust extraction equipment.
Cutting operation by this compound miter saw may
produce considerable amount of dust from
extraction duct on fixed guard.
(Dust material: Wood or Aluminium)
If devices are provided for the connection of dust
extraction and collection facilities ensure these are
connected and properly used.
11. Do not abuse the cord. Never carry the tool by the
cord or yank it to disconnect it from the receptacle.
Keep the cord away from heat, oil and sharp edges.
12. Secure work. Use clamps or a vise to hold the work.
It is safer than using your hand and it frees both
hands to operate tool.
13. Do not overreach. Keep proper footing and balance
at all times.
14. Maintain tools with care. Keep cutting tools sharp
and clean for better and safer performance. Follow
instructions for lubrication and changing
accessories. Inspect tool cords periodically and if
damaged, have it repaired by authorized service
center. Inspect extension cords periodically and
replace, if damaged. Keep handles dry, clean, and
free from oil and grease.
15. Disconnect tools. When not in use, before servicing,
and when changing accessories such as blades, bits
and cutters.
16. Remove adjusting keys and wrenches. Form the
habit of checking to see that keys and adjusting
wrenches are removed from the tool before turning
it on.
17. Avoid unintentional starting. Do not carry a pluggedin tool with a finger on the switch. Ensure switch is
off when plugging in.
18. Use outdoor extension leads. When tool is used
outdoors, use only extension cords intended for
outdoor use.
19. Stay alert. Watch what you are doing. Use common
sense. Do not operate tool when you are tired.
20. 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 perform its intended function. Check
for alignment of moving parts, free running 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 in this
handling instructions. Have defective switches
replaced by an authorized service center. Do not use
the tool if the switch does not turn it on and off.
21. Warning
The use of any accessory or attachment, other than
those recommended in this handling instructions,
may present a risk of personal injury.
22. Have your tool repaired by a qualified person.
This electric tool is in accordance with the relevant
safety requirements. Repairs should only be carried
out by qualified persons using original spare parts.
Otherwise this may result in considerable danger
to the user.
PRECAUTIONS ON USING COMPOUND MITER
SAW
1. Keep the floor area around the machine level. Well
maintained and free of loose materials e.g. chips
and cut-offs.
2. Provide adequate general or localized lighting.
3. Do not use power tools for applications other than
those specified in the handling instructions.
4. Repairing must be done only by authorized service
facility. Manufacturer is not responsible for any
damages and injuries due to the repair by the
unauthorized persons as well as the mishandling of
the tool.
5. To ensure the designed operational integrity of
power tools, do not remove installed covers or
screws.
6. Do not touch movable parts or accessories unless
the power source has been disconnected.
7. Use your tool at lower input than specified on the
nameplate; otherwise, the finish may be spoiled and
working efficiency reduced due to motor overload.
8. Do not wipe plastic parts with solvent. Solvents such
as gasoline, thinner, benzine, carbon tetrachloride,
alcohol, may damage and crack plastic parts. Do not
wipe them with such solvent. Clean plastic parts with
a soft cloth lightly dampened with soapy water.
9. Use only original HITACHI replacement parts.
10. This tool should only be disassembled for
replacement of carbon brushes.
11. The exploded assembly drawing on this handling
instructions should be used only for authorized
service facility.
12. Never cut ferrous metals or masonry.
13. Adequate general or localized lighting is provided.
Stock and finished workpieces are located close to
the operators normal working position.
14. Wear suitable personal protective equipment when
necessary, this could include:
Hearing protection to reduce the risk of induced
hearing loss.
Eye protection to reduce the risk of injuring an eye.
Respiratory protection to reduce the risk of
inhalation of harmful dust.
2
Gloves for handling saw blades (saw blades shall
be carried in a holder wherever practicable) and
rough material.
15. The operator is adequately trained in the use,
adjustment and operation of the machine.
16. Refrain from removing any cut-offs or other parts
of the workpiece from the cutting area whilst the
machine is running and the saw head is not in the
rest position.
17. Never use the compound miter saw with its lower
guard locked in the open position.
18. Ensure that the lower guard moves smoothly.
19. Do not use the saw without guards in position, in
good working order and properly maintained.
20. Use correctly sharpened saw blades. Observe the
maximum speed marked on the saw blade.
21. Do not use saw blades which are damaged or
deformed.
22. Do not use saw blades manufactured from high
speed steel.
23. Use only saw blades recommended by HITACHI.
24. The saw blades should be from 290 mm to 305 mm
external diameter ranges.
25. Select the correct saw blade for the material to be
cut.
26. Never operate the compound miter saw with the
saw blade turned upward or to the side.
SPECIFICATIONS
27. Ensure that the workpiece is free of foreign matter
such as nails.
28. Replace the table insert when worn.
29. Do not use the saw to cut other than aluminium,
wood or similar materials.
30. Do not use the saw to cut other materials than those
recommended by the manufacturer.
31. Blade replacement procedure, including the method
for repositioning and a warning that this must be
carried out correctly.
32. Connect the compound miter saw to a dust
collecting device when sawing wood.
33. Take care when slotting.
34. When transporting or carrying the tool, do not grasp
the holder. Grasp the handle instead of the holder.
35. Start cutting only after motor revolution reaches
maximum speed.
36. Promptly cut OFF the switch when abnormality
observed.
37. Shut off power and wait for saw blade to stop before
servicing or adjusting tool.
38. During a miter or bevel cut the blade should not be
lifted until it has stopped rotation completely.
39. Take all the possibility of residual risks in cutting
operation into your consideration, such as the laser
radiation to your eyes, the inadvertent access to
moving parts on slide mechanical parts on machine
and so on.
Max. Cutting
Capacity
Height × Width
Compound (Bevel Left 45°, Miter 45°)
Saw Blade Dimensions (oD × iD × Thickness) 305 mm × 25.4 mm × 2.3 mm
Miter Cutting Angle Right and Left 0° – 52°
Bevel Cutting Angle Left –3° – 48°
Compound Cutting Angle
Voltage (by areas)* (110 V, 220 V, 230 V, 240 V)
Power Input* 1520 W
No-Load Speed 4000 / min
Machine Dimensions (Width × Depth × Height) 625 mm × 775 mm × 610 mm
Model C12LCH C12LC C12FCH
Weight (Net) 19.5 kg 19 kg
Digital Display Precision ±0.5° Yes Yes No
Laser Marker Yes No Yes
* Be sure to check the nameplate on product as it is subject to change by areas.
0° or
Miter 45° 63.5 mm × 140 mm
Bevel Left 45° 42 mm × 200 mm
Maximum output Po<3 mW Class Laser Product
(Iambda) 654 nm
Laser medium Laser Diode
63.5 mm × 200 mm
98 mm × 155 mm
42 mm × 140 mm
Miter (Right and Left) 0° – 45°
Bevel (Left) 0° – 45°
3
STANDARD ACCESSORIES
Handle
Locking Pin
PullPull
(1) 305 mm TCT Saw blade (mounted on tool) ............. 1
(2) Dust bag ...................................................................... 1
(3) 17 mm Box wrench .................................................... 1
(4) Vise Assembly ............................................................ 1
(5) 4 mm Hex.bar wrench (only C12LCH/C12FCH) ........ 1
(6) Washer (C) .................................................................. 1
Standard accessories are subject to change without notice.
OPTIONAL ACCESSORIES (SOLD SEPARATELY)
(1) Extension Holder and Stopper
(2) Crown molding Vise Ass'y (Include Crown molding
Stopper (L))
(3) Crown molding Stopper (L)
(4) Crown molding Stopper (R)
Optional accessories are subject to change without notice.
APPLICATION
䡬 Cutting various types of aluminium sash and wood.
UNPACKING
䡬 Carefully unpack the power tool and all related items
(standard accessories).
䡬 Check carefully to make certain all related items
(standard accessories) are present.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position. If
the plug is connected to a receptacle while the trigger
switch is in the ON position, the power tool will start
operating immediately, inviting serious accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be kept
as short as practicable.
4. When the power tool is prepared for shipping, its
main parts are secured by a locking pin
Move the handle slightly so that the locking pin can
be disengaged.
CAUTION
䡬 Set for transport
Lock the locking pin into the gear case (Fig. 1-a).
Remove a 6 mm wing bolt.Turn the link (C) as the Fig.
1-b, and fix it again with the 6 mm wing bolt.
Lower guard cover the teeth of the blade to the front
of the machine.
䡬 Cutting work
Move the handle slightly so that the locking pin can
be disengaged.
Remove a 6 mm wing bolt.Turn the link (C) as Fig. 1-c,
and fix it again with the 6 mm wing bolt.
Fig. 1-a
Link (C)
6 mm Wing Bolt
Fig. 1-b
Link (C)
6 mm Wing Bolt
Fig. 1-c
5. Attach the dust bag to the main unit (Fig. 2)
(1) When the dust bag has become full of sawdust, dust will
be blown out of the dust bag when the saw blade rotates.
Check the dust bag periodically and empty it before it
becomes full.
4
Dust Bag
Laser Marker
(For C12LCH/C12FCH)
Vise Assembly
Fence (B)
Sub Fence
Gear Case
Turntable
Motor Head
Fig. 2
Handle
Lock Lever (D)
Motor
Saw Blade
Lower Guard
Rotation Direction
Fence (A)
Knob
Indicator (A)
(For miter scale)
Table Insert
Digital Display
(For C12LCH/C12LC)
Lever
Side Handle
(2) During bevel and compound cutting, attach the dust bag
at a right angle to the base surface as shown in Fig. 3.
Dust Bag
Duct
Right Angle
Base
Fig. 3
CAUTION
䡬 Empty the dust bag frequently to prevent the duct and
the lower guard from becoming clogged.
Sawdust will accumulate more quickly than normal
during bevel cutting.
6. Installation
Ensure that the machine is always fixed to bench.
Attach the power tool to a level, horizontal work bench.
Select 8 mm diameter bolts suitable in length for the
thickness of the work bench.
Bolt length should be at least 35 mm plus the thickness
of the work bench.
For example, use 8 mm × 60 mm bolts for a 25 mm
thick work bench.
ADJUSTING THE POWER TOOL PRIOR TO USE
CAUTION
Make all necessary adjustments before inserting the
plug in the power source.
1. Check to see that the lower guard operates smoothly
CAUTION
䡬 This compound miter saw is equipped with a saw
head lock as safety device.
䡬 To lower the saw head to cut, the lock must be released
by pressing the lock lever (D) with your thumb.
(1) When you push down the handle while pushing the
lock lever (D), check that the lower guard revolves
smoothly (Fig. 4).
(2) Next, check that the lower guard returns to the original
position when the handle is raised.
Lock Lever (D)
Lower Guard
Fig. 4
5
PRACTICAL APPLICATIONS
Sub Fence
Turn
Fence (B)
WARNING
䡬 To avoid personal injury, never remove or place a
workpiece on the table while the tool is being operated.
䡬 Never place your limbs inside of the line next to
warning sign while the tool is being operated. This
may cause hazardous conditions (see Fig. 5).
Warning Sign
Line
CAUTION
䡬 It is dangerous to remove or install the workpiece
while the saw blade is turning.
䡬 When sawing, clean off the shavings from the turntable.
䡬 If the shavings accumulate too much, the saw blade
from the cutting material will be exposed. Never
subject your hand or anything else to go near the
exposed blade.
1. Tightly secure the material by vise assembly to be
cut so that it does not move during cutting
2. Switch operation
Pulling the trigger turns the switch on. Releasing the
trigger turns the switch off.
3. Holder (B) adjustment (Fig. 6)
Loosen the 6 mm bolt with the supplied 10 mm box
wrench. Adjust the holder (B) until its bottom surface
contacts the bench or the floor surface.
Fig. 5
Warning Sign
Line
Screw Holder
6 mm Wing Bolt (B)
Fence (B)
Vise Shaft
6 mm Wing Bolt (A)
Fig. 7
(2) The screw holder can be raised or lowered according
to the height of the workpiece by loosening the 6 mm
wing bolt (B). After the adjustment, firmly tighten the
6 mm wing bolt (B) and fix the screw holder.
(3) Turn the upper knob and securely fix the workpiece
in position.
WARNING
䡬 Always firmly clamp or vise to secure the workpiece
to the fence; otherwise the workpiece might be thrust
from the table and cause bodily harm.
CAUTION
䡬 Always confirm that the motor head does not contact
the vise assembly when it is lowered for cutting. If
there is any danger that it may do so, loosen the 6
mm wing bolt and move the vise assembly to a
position where it will not contact the saw blade.
5. Confirmation for use of sub fence
This power tool is equiped with a sub fence (See Fig. 2).
In the case of direct angle cutting and angle cutting,
use the sub fence. Then you can realize stable cutting
of the material with a wide back face.
In the case of left bavel cutting, raise the sub fence up
as illustrated in Fig. 8 and then turn it counterclockwise.
Knob
Vise Plate
Workpiece
Holder (B)
6 mm Bolt
Adjust the holder
until its bottom
surface contacts the
work bench surface.
4. Using the Vise Assembly (Standard accessory) (Fig. 7)
(1) The vise assembly can be mounted on either the left
6
fence {Fence (B)} or the right fence {Fence (A)} by
loosening the 6 mm wing bolt (A).
Move
Fig. 6
Fig. 8
WARNING
In the case of left bevel cutting, turn the sub fence
counterclockwise. Unless it is turned counterclockwise,
the main bady or saw blade may contact the sub fence,
resulting in an injury.
6. Using an ink line
Upon lowering the motor section, the lower guard is
raised and the saw blade appears.
Align the ink line with the saw blade.
CAUTION
Never lift the lower guard while the saw blade is
rotating.
The sub fence will not only make contact and
adversely affect cutting accuracy, this could also result
in damage to the guard.
7. Position adjustment of laser line (Only Model C12LCH/
C12FCH)
Ink lining can be easily made on this tool to the laser
marker. A switch lights up the laser marker (Fig. 9).
Turning on the laser marker switch while the digital
display swich is on, light up the laser marker. (On the
C12FCH, only the laser marker switch.)
Depending upon your cutting choice, the laser line
can be aligned with the left side of the cutting width
(saw blade) or the ink line on the right side.
The laser line is adjusted to the width of the saw blade
at the time of factory shipment. Adjust the positions
of the saw blade and the laser line taking the following
steps to suit the use of your choice.
Laser marker switch
Digital display switch
Fig. 9
(1) Light up the laser marker and make a groove of about 5
mm deep on the workpiece that is about 38 mm in height
and 89 mm in width. Hold the grooved workpiece by vise
as it is and do not move it.
(2) Then insert a 4 mm hex. bar wrench in the 12 diameter
hole on the side of the gear case, turn the hex. socket
set screw to move the laser line. (If you turn the Hex.
socket screw clockwise, the laser line will shift to the
right and if you turn it counterclockwise, the laser line
will shift to the left.) When you work with the ink line
aligned with the left side of the saw blade, align the
laser line with the left end of the groove (Fig. 10). When
you align it with the right side of the saw blade, align
the laser line with the right side of the groove.
4 mm Hex.
Bar Wrench
Laser line
Groove
Fig. 10
(3) After adjusting the position of the laser line, draw a
right-angle ink line on the workpiece and align the
ink line with the laser line. When aligning the ink line,
slide the workpiece little by little and secure it by vise
at a position where the laser line overlaps with the
ink line. Work on the grooving again and check the
position of the laser line. If you wish to change the
laser line’s position, make adjustments again
following the steps from (1) to (3).
WARNING (Fig. 11 and Fig. 12)
䡬 Make sure before plugging the power plug into the
receptacle that the main body and the laser marker
are turned off.
䡬 Exercise utmost caution in handling a switch trigger
for the position adjustment of the laser line, as the
power plug is plugged into the receptacle during
operation.
If the switch trigger is pulled inadvertently, the saw
blade can rotate and result in unexpected accidents.
䡬 Do not remove the laser marker to be used for other
purposes.
Fig. 11
Fig. 12
CAUTION
䡬 Laser radiation - Do not stare into beam.
䡬 Laser radiation on work table. Do not stare into beam.
If your eye is exposed directly to the laser beam, it
can be hurt.
䡬 Do not dismantle it.
䡬 Do not give strong impact to the laser marker (main
body of tool); otherwise, the position of a laser line
can go out of order, resulting in the damage of the
laser marker as well as a shortened service life.
䡬 Keep the laser marker lit only during a cutting
operation. Prolonged lighting of the laser marker can
result in a shortened service life.
䡬 Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
7
NOTE
Laser marker switch
(for C12LCH/C12FCH)
Digital display switch
(for C12LCH/C12LC)
(Also serves as laser
marker power switch.)
䡬 Perform cutting by overlapping the ink line with the
laser line.
䡬 When the ink line and the laser line are overlapped,
the strength and weakness of light will change,
resulting in a stable cutting operation because you
can easily discern the conformity of lines. This ensures
the minimum cutting errors.
䡬 In outdoor or near-the-window operations, it may
become difficult to observe the laser line due to the
sunlight. Under such circumstances, move to a place
that is not directly under the sunlight and engage in
the operation.
䡬 Do not tug on the cord behind the motor head or hook
your finger, wood and the like around it; otherwise,
the cord may come off and the laser marker may not
be lit up.
䡬 Check and make sure on a periodic basis if the position
of the laser line is in order. As regards the checking
method, draw a right-angle ink line on the workpiece
with the height of about 38 mm and the width of 89
mm, and check that the laser line is in line with the
ink line [The deviation between the ink line and the
laser line should be less than the ink line width (0.5
mm)] (Fig. 13).
Laser line
(3) Turning on the laser marker switch while the digital
display switch is on, lights up the laser marker. (On
the C12FCH, only the laser marker switch.)
Fig. 15
CAUTION
䡬 When operating the digital panel, have the motor head
section at the top limit position and the blade stopped.
䡬 If the figure shown on the miter angle digital display
is different from the positive stop angle (for example,
45.0° → 45.5°, 31.6° → 32.0°) then the positive stop
has probably deviated slightly from its correct
position. If this happens, do as follows.
(1) Move the turntable left and right with the side
handle loosened, and set the turntable to the
correct position.
(2) If the figures on the display and positive stop still
do not match, then return the turntable to the 0°
position. Next move the turntable left and right
with the side handle loosened as shown in Fig.
15. After setting it to the correct position 0°, press
the reset button again.
Marking (pre-marked)
Fig. 13
8. DIGITAL DISPLAY PANEL (for C12LCH and C12LC)
Miter angle
window
(Displays arrows
show angle and
direction that
turntable is
rotating. Left is
←, Right is →.)
Miter angle
reset button
(1) Tu rning on the digital display switch shows 0° for both
miter and bevel angle, regardless of main unit angle.
(2) Align the main unit angle with the tilt angle (0°) and
miter angle (0°) and hold down their reset buttons for
at least 0.2 seconds.
Back light ON/OFF switch (Press
and the switch illuminates. Press
again and the lighting turns off.)
Fig. 14
Bevel angle
window
(Displays arrows
showing motor
head bevel angle
and bevel
direction. Left is
←, Right is →.)
Bevel angle
reset button
8
Reset Button
Side Handle
Move the turntable left and right with the side
handle loosened and set it to the correct position.
Fig. 16
NOTE
䡬 Before starting to cut, align the main unit to the miter
angle 0° and the bevel angle 0° and hold down the
reset buttons for at least 0.2 seconds. If you press the
digital display switch to ON without aligning the main
unit to 0°, then the figures appearing on the digital
display and the main unit angle will not match.
䡬 The laser marker will not light up if the digital display
switch is turned off. (only on C12LCH)
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