Hitachi C 12LDH, C 12FDH Technical Data And Service Manual

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TECHNICAL DATA

AND

SERVICE MANUAL

COMPOUND MITER SAW

C 12LDH C 12FDH

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

LIST Nos. C 12LDH: E943

C 12FDH: E944

Oct. 2005

MODELS

C 12LDH C 12FDH

Hitachi



Power Tools

REMARK: Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the place of company name(s) and model name(s) of our competitor(s). The symbol(s) utilized here is(are) as follows:

Symbol Utilized

Competitor

Company Name

Model Name

B BOSCH

4212L

P DEWALT

DW716

Q DELTA

36-412

Page

CONTENTS

1. PRODUCT NAME............................................................................................................................ 1

2. MARKETING OBJECTIVE .............................................................................................................. 1

3. APPLICA TIONS............................................................................................................................... 1

4. SELLING POINTS ........................................................................................................................... 1

4-1. Selling Point Descriptions ................................................................................................................ 2

5. SPECIFICATIONS ........................................................................................................................... 4

6. COMPARISONS WITH SIMILAR PRODUCTS............................................................................... 6

7. PRECAUTIONS IN SALES PROMOTION ...................................................................................... 7

7-1. Instruction Manual ............................................................................................................................7

7-2. Warning Labels and Caution Labels.................................................................................................7

7-3. Relative Standards ...........................................................................................................................9

7-4. Laser Marker.....................................................................................................................................9

7-5. Ambient Illuminance and Visibility of Laser Line .............................................................................10

8. ADJUSTMENT AND OPERATION PRECAUTIONS...................................................................... 11

8-1. Position Adjustment of Laser Line ..................................................................................................11

8-2. Before Cutting.................................................................................................................................13

8-3. How to Use the Vise Assembly.......................................................................................................14

8-4. Confirmation for Use of Sub Fence ................................................................................................15

8-5. Cutting Operation............................................................................................................................17

8-6. Digital Display Panel (For Model C 12LDH) ...................................................................................22

9. ADJUSTMENT OF COMPONENTS.............................................................................................. 23

9-1. Bevel Angle Fine Adjustment ..........................................................................................................23

10. PACKING ..................................................................................................................................... 24

11. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY.......................................................... 25

11-1. Precautions in Disassembly and Reassembly of the Laser Marker ..............................................25

11-2. Disassembly ..................................................................................................................................25

11-3. Reassembly ..................................................................................................................................35

11-4. Wiring Diagram .............................................................................................................................36

11-5. No-load Current.............................................................................................................................40

11-6. Reassembly Requiring Adjustment ...............................................................................................40

11-7. Lubrication......................................................................................................................................41

11-8. Product Precision ...........................................................................................................................41

11-9. Adjustment of Laser Marker Accuracy ...........................................................................................42

11-10. Tightening Torque.........................................................................................................................45

12. REPAIR GUIDE ............................................................................................................................ 46

13. STANDARD REPAIR TIME (UNIT) SCHEDULES ....................................................................... 51

Assembly Diagram for C 12LDH Assembly Diagram for C 12FDH

Page

--- 1 ---

1. PRODUCT NAME

Hitachi Compound Miter Saw, Models C 12LDH and C 12FDH

2. MARKETING OBJECTIVE

Following the 12" compound miter saw Model C 12LCH equipped with the laser marker, we introduce the new two 12" compound miter saws Models C 12LDH and C 12FDH. The Model C 12LDH is equipped with the class-first digital display panel that indicates miter/bevel angles. In addition, the Models C 12LDH and C 12FDH can perform bevel cutting at 45˚ in either left or right direction efficiently without moving the workpiece. With the new Models C 12LDH and C 12FDH, we aim to expand our market share.

3. APPLICA TIONS

Cutting various types of wood workpieces Cutting workpieces of plywood, decoration panels, soft fiberboard and hard board Cutting aluminum sashes

4. SELLING POINTS

Dust guide to prevent chips from scattering

Aggressive tool design

Thumb actuated positive stops for quick and easy miter adjustment

Powerful 15 amps motor

Soft vibration reducing grip

(9)

(10)

(8)

(5)

(7)

Laser guide system For easier alignment

with the ink line

(2)

Digital display panel that indicates miter/bevel angles (Model C 12LDH)

(1)

Bevel angle fine adjustment

(4)

130-mm high fence (Turning sub fence)

(6)

(For U.S.A. and Canada)

Bevel cutting in either left or right direction

(3)

Left bevel cutting: H50 x W203 (mm) H55 x W190 (mm) Right bevel cutting: H31 x W203 (mm) H38 x W190 (mm)

--- 2 ---

(2) Laser guide system

Use the laser marker for aligning with the ink line on the workpiece.

Cutting position can be properly adjusted by aligning the positioning ink line with the laser line. There is no need to make a long ink line on the workpiece. There is no need to lower the motor head to align with the ink line because the laser marker makes a laser line on the workpiece. In addition, cutting position can be easily adjusted because the operator can hold the workpiece with both hands to move. Cutting position can be easily adjusted because the laser line can be aligned with an optionally angled ink line. Even the workpieces such as crown moldings and base boards that have decorative surfaces and are difficult to be made an ink line can be cut just by aligning the laser line with the ink line on the fence side. The laser line is adjusted to the width of the saw blade at the time of factory shipment. Depending upon the user's 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. Adjust the position of the laser line according to "8-1. Position Adjustment of Laser Line" on page 11.

4-1. Selling Point Descriptions

(1) Digital display panel that indicates miter/bevel angles (Model C 12LDH)

Fig. 1

Laser line

Ink line

Use the digital display panel when cutting a workpiece at an optional angle. The class-first digital display panel indicates a miter/bevel cutting angle with a numeric value. There is no reading error caused by visual check between the indicator and the scale. The digital display indicates a miter angle or a bevel angle in increments of 0.5˚. The digital display is equipped with the convenient back light ON/OFF switch that makes the display easily readable even in a dimly lit place.

Fig. 2

(3) Bevel cutting in either left or right direction

Maximum cutting dimensions

The Models C 12LDH and C 12 FDH can perform bevel cutting for the workpieces shown in Table 1 by inclining the saw blade section in either left or right direction.

Bevel left 45˚ Height x Width

Table 1

Bevel right 45˚ Height x Width

Hitachi

C 12LDH

Maximum cutting dimensions

Maker

•

Model

50 x 203

[55 x 190]

31 x 203

[38 x 190]

Workpiece

Bevel left 45˚

Bevel right 45˚

Width

Height

--- 3 ---

(4) Bevel angle fine adjustment

The Models C 12LDH and C 12FDH are easily and finely adjustable to an optional bevel angle. Pulling the plate allows the bevel angle to be adjusted by about 48˚ to the left or about 48˚ to the right with one-touch simple operation.

(5) Soft, vibration reducing grip

The handle grip is comfortable and slip-resistant thanks to the integrally molded rubber. In addition, it reduces vibration transmitted to the operator's hand. The Models C 12LDH and C 12FDH are easier to operate.

(6) 130-mm high fence (Turning sub fence)

The Models C 12LDH and C 12FDH realize stable cutting thanks to the widely supportable high fence.

(7) Aggressive tool design

The tool color is gunmetallic silver to give a sturdier image. The circular saw portion is of a powerful, original and aggressive design.

(8) Powerful 15 amps motor

The Models C 12LDH and C 12FDH are equipped with a 15-ampere motor. The Models C 12LDH and C 12FDH can cut workpieces as quickly as the Model C 12LCH.

(9) Thumb actuated positive stops for quick and easy miter adjustment

The positive stops are provided to adjust the turn table position for miter cutting securely. These stops can be actuated (fixed or released) with thumb quickly and easily holding the side handle.

(10) Dust guide to prevent chips from scattering

A dust guide is provided to prevent wood chips from adhering to the saw blade and scattering when cutting the edge of the workpiece.

--- 4 ---

5. SPECIFICATIONS

70 mm (2-3/4") x 203 mm (8") 89 mm (3-1/2") x 190 mm (7-1/2")

Maximum cutting dimensions Height x Width

0˚ (Right angle)

Miter cutting ranges Right and left 0˚ --- 52˚

Miter right/left 45˚

70 mm (2-3/4") x 140 mm (5-1/2")

Bevel cutting ranges

Right and left 0˚ --- 48˚

Compound (miter + bevel) cutting ranges

Miter: Right and left 0˚ --- 45˚, Bevel: Right and left 0˚ --- 45˚

Max. output

Cord

Packaging

C 12LDH

Weight

Main unit dimensions Width x Depth x Height

1,950 W

Type: 2-conductor cabtire cable Length: 2.0 m (6.7 ft)

Corrugated cardboard box

21.5 kg (47.4 Ibs.), gross weight 28 kg (61.7 Ibs.)

625 mm x 780 mm x 685 mm (24-5/8" x 30-23/32" x 27")

21.0 kg (46.3 Ibs.), gross weight 27.5 kg (60.6 Ibs.)

Angle stopper positions

Right and left 0˚, 15˚, 22.5˚, 31.6˚, 45˚

Saw blade outer diameter

305 mm (12") external dia.

No-load rotation speed

4,000 min

-1

Laser marker

Full-load current

Miter right/left 52˚

70 mm (2-3/4") x 120 mm (4-3/4")

Maximum output Wave length

Laser medium

< 1 mW (CLASS II ) 400 nm --- 700 nm Laser diode

Type of motor

AC single phase commutator series motor

Power source type and voltage AC single phase 60 Hz, 120 V

15 A

C 12FDH

Coating

Gunmetallic silver

Digital display (For Models C 12LDH)

Precision 0.5˚

(It is not the actual precision when cutting a wood workpiece.)

Miter right/left 45˚

Bevel left 45˚

50 mm (1-31/32") x 140 mm (5-1/2")

Bevel right 45˚

31 mm (1-7/32") x 203 mm (8")

Miter right/left 45˚

Bevel right 45˚

31 mm (1-7/32") x 140 mm (5-1/2")

Bevel left 45˚

50 mm (1-31/32") x 203 mm (8")

Standard accessories 305 mm (12") TCT saw blade (32 teeth, Code No. 323522)

•••••••••••••••

for wood cutting Dust bag Vise ass'y 17 mm box wrench 4 mm hex. bar wrench

--- 5 ---

305 mm (12") TCT saw blade (60 teeth, Code No. 305546) Extension holder and stopper (Code No. 323523)

Crown molding vise ass'y (including crown molding stopper (L)) (Code No. 323545) Crown molding stopper (L) (Code No. 323546) Crown molding stopper (R) (Code No. 323547)

Optional accessories

--- 6 ---

305 (12") (32 teeth)

15 4,000 1,520 1,950

Provided

< 1 mW

Double insulation

Provided (fixed)

305 (12") (60 teeth)

4,000

Provided

Double insulation

None

625 x 690 x 655

(24-5/8" x 27-5/32" x 25-25/32")

305 (12") (60 teeth)

4,200

Not provided

Double insulation

None

630 x 670 x 735

(24-13/16" x 26-3/8" x 28-15/16")

63.5 mm x 165 mm (2-1/2" x 6-1/2")

70 mm x 140 mm

(2-3/4" x 5-1/2")

Miter cutting ranges Bevel cutting ranges

Compound (miter + bevel) cutting ranges

Angle stopper position

Saw blade outer diameter (mm)

Full-load current (A) No-load revolution (min

-1

) Power input (W) Max. output (W) Laser marker Laser output Insulation structure Dust guide

Dust bag size (mm) Main unit dimensions

Width x Depth x Height

6. COMPARISONS WITH SIMILAR PRODUCTS

Item

Maker/Model

Max. cutting dimensions Height x Width

HITACHI

C 12LDH/C 12FDH

0˚ (Right angle)

Miter right/left 45˚

70 mm x 203 mm

(2-3/4" x 8")

89 mm x 190 mm

(3-1/2" x 7-1/2")

50 mm x 140 mm

(1-31/32" x 5-1/2")

50 mm x 203 mm

(1-31/32" x 8")

Bevel left 45˚

Bevel right 45˚

Motor

48 mm x 201 mm

(1-7/8" x 7-29/32")

30 mm x 201 mm

(1-3/16" x 7-29/32")

Right and left 0˚--- 50˚

Standard accessories

Optional accessories

• 305 mm (12") TCT saw blade (32 teeth) for wood cutting

• Dust bag

• Vise ass'y

• 17 mm box wrench

• 4 mm hex. bar wrench

•

305 mm (12") TCT saw

blade (60 teeth) for

normal cutting

•

Extension holder and

stopper

•

Crown molding vise ass'y (including crown molding stopper (L))

•

Crown molding stopper (L)

•

Crown molding stopper (R)

74 mm x 201 mm

(2-29/32" x 7-29/32")

89 mm x 188 mm

(3-1/2" x 7-13/32")

Right and left 0˚--- 52˚

Miter: Right and left 0˚ --- 45˚ Bevel: Right and left 0˚ --- 45˚

Right and left 0˚, 10˚, 15˚, 22.5˚, 31.6˚, 45˚

Miter: Right and left 0˚ --- 45˚ Bevel: Right and left 0˚ --- 45˚

• 305 mm (12") saw blade

(60 teeth)

• Dust bag

• Blade wrench

•

Extension kit

•

Length stop

•

Crown stops

•

Material clamp

43 mm x 235 mm

(1-11/16" x 9-1/4")

24 mm x 235 mm

(15/16" x 9-1/4")

Right and left 0˚--- 48˚

63.5 mm x 235 mm (2-1/2" x 9-1/4")

89 mm x 165 mm

(3-1/2" x 6-1/2")

Right and left 0˚, 15˚,

22.5˚, 31.6˚, 45˚

Miter: Right and left 0˚ --- 48˚ Bevel: Right and left 0˚ --- 45˚

• 305 mm (12") saw blade

(60 teeth)

• Dust bag

• Dust spout

• Blade shroud

• 1/2 Arbor wrench

• M4 pan head screw

• Open end 7/16" wrench

63.5 mm x 140 mm (2-1/2" x 5-1/2")

63.5 mm x 200 mm (2-1/2" x 7-7/8")

100 mm x 155 mm

(3-15/16" x 6-3/16")

55 mm x 200 mm (2-3/16" x 7-7/8")

27 mm x 155 mm

(1-1/16" x 6-3/16")

Right and left 0˚--- 52˚

Miter: Right and left 0˚ --- 47˚ Bevel: Right and left 0˚--- 52˚

Right and left 0˚, 15˚,

22.5˚, 31.6˚, 45˚, 60˚ 305 (12") (40 teeth)

3,800

Provided (Laser tracking)

Double insulation

None

• 305 mm (12") saw

blade (40 teeth)

• Vise Ass'y

• Crown molding stopper ass'y

• Dust bag

• Multi purpose tool

• 3 mm hex. bar wrench

• 10 mm/17 mm wrench

• Combination square

74 mm x 142 mm

(2-29/32" x 5-19/32")

250 x 160

(9-27/32" x 6-5/16")

625 x 780 x 685

(24-5/8" x 30-23/32" x 27")

C 12LDH C 12FDH

21.5 (47.4 lbs.)

21 (46.3 lbs.)

Digital display

Provided

(Models C 12LDH)

None

None None

Product weight (kg)

31 mm x 203 mm

(1-7/32" x 8")

Miter right/left 45˚

Bevel left 45˚

48 mm x 142 mm

(1-7/8" x 5-19/32")

43 mm x 165 mm

(1-11/16" x 6-1/2")

40 mm x 140 mm (1-9/16" x 5-1/2")

Right and left 0˚--- 48˚

Right and left 0˚--- 47˚Right and left 0˚--- 48˚

Right and left 0˚, 15˚,

22.5˚, 31.6˚, 45˚

300 x 200

(11-13/16" x 7-7/8")

31 mm x 140 mm (1-7/32" x 5-1/2")

Miter right/left 45˚

Bevel right 45˚

30 mm x 142 mm

(1-3/16" x 5-19/32")

---

( --- )

---

( --- )

20.5 (45.1 lbs.)

24.0 (52.8 lbs.)

220 x 180

(8-21/32" x 7-3/32")

645 x 760 x 730

(25-13/32" x 29-15/16" x 28-3/4")

26.0 (57.2 lbs.)

--- 7 ---

7. PRECAUTIONS IN SALES PROMOTION

In the interest of promoting the safest and most efficient use of the Models C 12LDH and C 12FDH Compound Miter Saws by all of our customers, it is very important that at the time of sale the salesperson carefully ensures that the buyer seriously recognizes the importance of the contents of the Instruction Manual, and fully understands the meaning of the precautions listed on the Warning Labels and Caution Labels attached to each machine.

7-1. Instruction Manual

Although every effort is made in each step of design, manufacture and inspection to provide protection against safety hazards, the dangers inherent in the use of any compound miter saw cannot be completely eliminated. Accordingly, general precautions and suggestions for the use of electric power tools, and specific precautions and suggestions for the use of the compound miter saw are listed in the Instruction Manual to enhance the safe, efficient use of the tool by the customer. Salespersons must be thoroughly familiar with the contents of the Instruction Manual to be able to offer appropriate guidance to the customer during sales promotion.

7-2. Warning Labels and Caution Labels

(1) Precautions on the name plate

Each Model C 12LDH/C 12FDH is furnished with a Name Plate that lists the following precautions.

Fig. 3

Fig. 4

Fig. 5

Warning label (A) specified by the UL is affixed on the right side of the base. Please instruct users to strictly observe the contents 1 to 9 in warning label (A) shown above.

(3) Caution label (B) (at the side of the gear case)

(2) Warning label (A)

--- 8 ---

Fig. 6

(4)

Caution label (A) (at the front of the hinge) and caution label (C) (at the front of the base) Do not stare into laser beam. If your eye is exposed directly to the laser beam, it can be hurt. Caution label (A) and caution label (C) are adhered to each machine to comply with the standards for the safe use of laser equipment.

Caution label (A) (at the front of the hinge)

(5) Warning label (M) (at the front of sub fence (A) (standard accessory))

Fig. 8

(6) Caution label (L) (at the front of sub fence (B) (standard accessory))

Fig. 9

Caution label (C) (at the front of the base)

Fig. 7

--- 9 ---

(7) Warning label (O) (at the front of sub fence (C) (standard accessory))

Fig. 10

7-3. Relative Standards

Standards, regulations and guidelines for the safe use of laser equipment. [The U. S. A.] There is a standard "Complies with 21 Code of Federal Regulation (21 CFR), Chapter 1, Subchapter J, Part 1010 and 1040" established by the Center for Devices and Radiological Health (CDRH) of the Food and Drug Administration (FDA). Standards, regulations and guidelines of the other countries are under investigation.

7-4. Laser Marker

The Models C 12LDH and C 12FDH are equipped with the laser marker that complies with the U. S. A. standard, FDA Complies with 21 CFR, Food and Drugs, Part 1040 "Performance Standard for Light-emitting Products", Class II. The Class II laser is defined as follows:

The laser power is low and it is safe by the protective measures such as blinking. However, it is dangerous if the operator's eyes are exposed directly to the laser for a protracted period. The operator can use the laser equipment without particular training and instruction. The amount of light exposure (output) is 1 mW or less at the position where the operator can be exposed to the laser radiation during operation.

Table 2

(Threshold value)

Class II accessible emission limit

Emission duration (s)

Wave length

(nm)

(Amount)

(Unit)

> 2.5 x 10

-1

1.0 x 10

-3

W Radiant power

> 400 <

710 The saw blade unit prevents access of the operator's eye to the laser emitting aperture less than 65 mm. In addition, the amount of light exposure (output) is 1 mW or less (about 0.4 mW) at this position. Thus the Models C 12LDH and C 12FDH satisfy the Class II requirements adequately. There is no ill effect on the operator's body if looking at the laser line on the workpiece during operation.

CAUTION: (1) Be sure to disconnect the power cord plug from the receptacle before removing the laser

marker for repair. If it is unavoidable to check the operation of the removed laser marker with the power turned on, face the laser emitting aperture to the ground to show the laser

line on the ground. (2) Laser radiation when open. DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

The lifespan of the laser marker in the Models C 12LDH and C 12FDH are about 2,160 hours. (About three years: 4 hours of use/day x 180 days/year)

--- 10 ---

7-5. Ambient Illuminance and Visibility of Laser Line

The visibility of the laser line on the workpiece changes depending on the brightness of the working environment. Instruct the customer to consider the brightness of the working environment when using the laser marker referring to the following table.

(The working environment where the illuminance is 200 luxes or less is dark and difficult to operate the Models C 12LDH and C 12FDH.) The laser line is invisible under direct sunlight of fine weather. Prepare a shaded area or relocate to a shaded area to operate the Models C 12LDH and C 12FDH .

Table 3 Ambient illuminance and visibility of laser line

Illuminance (lux)

3000 or more

Ambient

conditions

(reference)

Under direct sunlight of fine weather

Outdoor

Indoor

3000 or more 3000 - 2500 300 - 200 150 - 80 30 or less800 - 600

Near the window under cloudy weather, just before the sunset

Ink line is invisible.

Just before the sunset in cloudy weather

Shaded area in cloudy weather

Shaded area in fine weather

Cloudy weather

Invisible Visible

Near the window under fine weather

Indoor under fine weather

Near the window under cloudy weather

Indoor under cloudy weather

GlaringVisible Visible Visible Glaring

Laser line

--- 11 ---

The Models C 12LDH and C 12 FDH are equipped with the laser marker for easy alignment with the ink line on the workpiece. Turn on the digital display switch first then turn on the laser marker switch. In the case of the Model C 12LDH, the laser marker does not light if the digital display switch is turned off.

The laser line is adjusted to the width of the saw blade at the time of factory shipment. Depending upon the cutting choice, align the laser line with the left side of the cutting width (saw blade) or the right side according to the following procedure. First, make a right-angle ink line on the workpiece that is about 38 mm (1-1/2") in height and 89 mm (3-1/2") in width. To cut the right side of the ink line with the saw blade as shown in Fig. 14, align the left side of the saw blade with the ink line on the workpiece and make a groove of about 5 mm deep on the workpiece to the middle. Hold the grooved workpiece by the vise as it is and do not move it. Light up the laser marker. 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.) (Fig. 13) Thus the cutting position matches the laser line position. Align the ink line on the workpiece 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 (Fig. 14). Work on the grooving again and check the position of the laser line. 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.

Ink line

Saw blade

Fig. 12

WARNING: Make sure before plugging the power plug into the receptacle that the main body and the laser marker are turned off. 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. Do not remove the laser marker to be used for other purposes.

Workpiece

Cutting width

4 mm hex. bar wrench

Fig. 13

Laser line

Turn

Ink line

Laser line

Fig. 14

Groove

8. ADJUSTMENT AND OPERATION PRECAUTIONS

8-1. Position Adjustment of Laser Line

Fig. 11

Laser marker switch (Models C 12LDH and C 12FDH)

Digital display switch (Model C 12LDH only)

Move

Gear case

--- 12 ---

CAUTION: Laser radiation - Do not stare into beam. Laser radiation on work table. Do not stare into beam. If your eye is exposed directly to the laser beam, it can be hurt. Do not dismantle it. 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. Keep the laser marker lit only during a cutting operation. Prolonged lighting of the laser marker can result in a shortened service life. Use of controls adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

NOTE:

Perform cutting by overlapping the ink line with the laser line. 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. 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. 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. The laser marker will not light up if the digital display switch is turned off. (Only Model C 12LDH)

Instruct the above precautions on the laser marker to the customers.

--- 13 ---

8-2. Before Cutting

(1) Oblique angle

Before the power tool is shipped from the factory, it is adjusted for 0˚, right angle, left 45˚ bevel cutting angle and right 45˚ bevel cutting angle with 8 mm bolt (A), 8 mm bolt (B) and 8 mm bolt (C). When changing the adjustment, change the height of 8 mm bolt (A), 8 mm bolt (B) or 8 mm bolt (C) by turning them. When changing the bevel angle to the right 45˚, pull the set pin on the direction shown in Fig. 8-b and incline the motor head to the right. When adjusting the motor head to 0˚, always return the set pin to its initial position as shown in Fig. 15-a.

NOTE: Do not adjust the 8 mm bolt with bevel plates (Fig. 15-a) pulled.

Fig. 15-a

Fig. 15-b

Bevel plate

Indicator (for right bevel scale)

8 mm bolt (C) (stopper for right 45˚ bevel angle)

8 mm bolt (B) (stopper for left 45˚ bevel angle)

Pull

8 mm bolt (A) (stopper for 0˚)

Indicator (for left bevel scale)

Set pin

(2) Securing the workpiece

WARNING: Always clamp or vise to secure the workpiece to the fence; otherwise the workpiece

might be thrust from the table and cause bodily harm.

Steel square

Holder (optional accessory)

Height adjustment bolt 6 mm (optional accessory)

6 mm wing nut (optional accessory)

6 mm wing bolt (optional accessory)

Base surface

Fig. 16

Set pin

Return

(3) Installing the holders (Optional accessory)

The holders help keep longer workpieces stable and in place during the cutting operation. (1) As indicated in Fig. 16, use a steel square for aligning the upper edge of the holders with the base

surface. Loosen the 6 mm wing nut. Turn a height adjustment bolt 6 mm, and adjust the height of the holder.

(2) After adjustment, firmly tighten the wing nut and fasten the holder with the 6 mm wing bolt (optional

accessory). If the length of the height adjustment bolt 6 mm is insufficient, spread a thin plate beneath. Make sure the end of the height adjustment bolt 6 mm does not protrude from the holder.

--- 14 ---

(4) Stopper for precision cutting (Stopper and holder are optional accessory)

The stopper facilitates continuous precision cutting in lengths of 11" to 17-3/4" (280 mm to 450 mm). To install the stopper, attach it to the holder with the 6 mm wing bolt as shown in Fig. 17.

Fig. 17

Workpiece

Stopper (optional accessory)

Height adjustment bolt 6 mm (optional accessory)

6 mm wing nut (optional accessory)

Holder (optional accessory)

6 mm wing nut (optional accessory)

8-3. How to Use the Vise Assembly

(1) The vise assembly can be mounted on either the left

fence (fence (B)) or the right fence (fence (A)) by loosening 6 mm wing bolt (A).

(2) The screw holder can be raised or lowered according to

the height of the workpiece by loosening 6 mm wing bolt (B). After the adjustment, firmly tighten 6 mm wing bolt (B) and fix the screw holder.

(3) Turn the upper knob and securely fix the workpiece in

position (Fig. 18).

Fig. 18

Workpiece

Knob

Vise plate

6 mm wing bolt (B)

6 mm wing bolt (A)

Screw holder

Fence

Vise shaft

WARNING: 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: 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 6 mm wing bolt (B) and move the vise assembly to a position where it will not contact the saw blade.

--- 15 ---

8-4. Confirmation for Use of Sub Fence

(1) Confirmation for use of sub fence (A)

WARNING: In the case of right bevel cutting, turn sub fence (A) clockwise. Unless it is turned

clockwise, the main body or saw blade may contact sub fence (A), resulting in an injury.

This power tool is equipped with sub fence (A). In the case of direct angle cutting and left bevel angle cutting, use sub fence (A). Then you can realize stable cutting of the material with a wide back face. In the case of right bevel cutting, raise sub fence (A) up as illustrated in Fig. 19 and then turn it clockwise.

Fig. 19

Fig. 21

Fig. 20

Sub fence (A)

Turn

Fence (A)

Left bevel angle cutting Direct angle cutting

Left bevel angle cutting

Right bevel angle cutting

(2) Confirmation for use of sub fence (B)

WARNING: In the case of left bevel cutting, turn sub fence (B) counterclockwise. Unless it is turned

counterclockwise, the main body or saw blade may contact sub fence (B), resulting in an injury.

This power tool is equipped with sub fence (B). In the case of direct angle cutting and right bevel angle cutting, use sub fence (B). Then you can realize stable cutting of the material with a wide back face. In the case of left bevel cutting, raise sub fence (B) up as illustrated in Fig. 20 and turn it counterclockwise.

Turn

Sub fence (B)

Fence (B)

Right bevel angle cutting Direct angle cutting

(3) Confirmation for use of sub fence (C)

WARNING: In the case of left bevel angle cutting, remove sub fence (C). If sub fence (C) is not

removed, sub fence (C) will contact the main unit or the saw blade and result in injury.

This power tool is equipped with sub fence (C). In the case of direct angle cutting and right bevel angle cutting, use sub fence (C). (Fig. 21) Then you can realize stable cutting of the material with a wide back face.

Fence (B)

Sub fence (C)

--- 16 ---

In the case of left bevel angle cutting, remove sub fence (C) by sliding to the side and removing from the top as shown in Fig. 21. Loosen knob (B) then remove sub fence (C) (Fig. 22).

Sub fence (C)

Fig. 22

WARNING: To attach sub fence (C), insert then securely

tighten knob (B). If knob (B) is loose, sub fence (C) may move during cutting and result in injury.

Fence (B)

Knob (B)

--- 17 ---

CAUTION:

When the workpiece is secured on the left side, the cut-off portion comes to rest on the side of the saw blade as illustrated in Fig. 23. If the handle is raised before the saw blade rotation comes to a complete stop, there is a chance that the cut-off portion of the workpiece could become jammed against the saw blade, causing a hazardous condition. Instruct the customer to ensure without fail that the saw blade comes to a complete stop before attempting to raise the handle.

Cut-off-side workpiece

Saw blade

Fixed-side workpiece

Fig. 23

8-5. Cutting Operation

(1) Cutting efficiency will be reduced if a dull saw blade is used, if an excessively long extension cord is used, or if

the wire gauge of the extension cord is too small. (For details on extension cords, please refer to the Instruction Manual.) This is particularly important when cutting materials with dimensions which are at or near the maximum capacity for the machine.

(2) The customer should be advised to thoroughly inspect the workpiece to ensure that there are no metallic

objects (nails in particular), sand, or other foreign matter in or on the workpiece. Saw blade contact with such foreign matter will not only shorten the service life of the saw blade, but could cause serious accident. Should

the saw blade tips be broken off, the tips may fly toward the operator. (3) Direct current cannot be used. The switch can be faulty if used. (4) Press cutting

The Models C 12LDH and C 12FDH can be used for press cutting of workpieces up to 70 mm x 203 mm

(2-3/4" x 8") in a single operation by simply pushing the saw blade section (head) downward.

The customer should be cautioned that excessive pressure on the handle will not increase the cutting speed.

On the contrary, excessive pressure may result in reduced cutting efficiency (irregular or rough cutting of the

workpiece), and could also cause overload and subsequent burnout of the motor.

On completion of the cutting operation, turn the switch OFF and wait for the saw blade to come to a complete

stop before raising the saw blade section (head) to its original position. Raising the saw blade section (head)

while the saw blade is rotating may cause unwanted cutting marks on the workpiece.

Techniques to avoid unwanted cutting marks

Uneven and unwanted cutting marks can be avoided throughout the cutting operation by gently and smoothly

pressing down on the handle, so that the entire cutting operation is accomplished in a single uninterrupted

motion. (5) Miter cutting

Miter cutting is accomplished by turning the table. (For details, please refer to the Instruction Manual.)

(6) Bevel cutting

Bevel cutting of 0 --- 45˚ to the left/right is accomplished by inclining the saw blade section (head). (For details,

please refer to the Instruction Manual.)

--- 18 ---

Type of crown molding

To process crown molding at positions and in Fig. 24

Miter angle setting

Bevel angle setting

Miter angle setting

Bevel angle setting

Right 35.3˚ ( mark)

Left 30˚ ( mark)

Left 35.3˚ ( mark)

Left 30˚ ( mark)

45˚ type

Right 31.6˚ ( mark)

Left 33.9˚ ( mark)

Left 31.6˚ ( mark)

Left 33.9˚ ( mark)

38˚ type

1 4

Table 4

(8) Crown molding cutting

This machine can cut two types of crown molding workpieces by combining the miter and bevel cutting operations (for USA). Figure 24 shows two common crown molding types having angles of (θ) 38˚ and 45˚. For the typical crown molding fittings, see Fig. 25.

(7) Compound (miter + bevel) cutting

Compound cutting can be accomplished by combining the miter cutting and bevel cutting operations described in paragraphs (5) and (6) above. (For details, please refer to the Instruction Manual.) When the saw blade section (head) is inclined 45˚ to the right and left, the table can be turned up to 45˚ to the right and left.

The table below shows the miter angle and the bevel angle settings that are ideal for the two crown molding types.

NOTE: For convenience, positive stops are provided for both the miter setting (left and right 31.6˚) and

the bevel setting positions.

For miter cut setting

If the turn table has been set to either of the angles described, move the turn table adjusting the side handle a little to the right and left to stabilize the position and to properly align the miter scale and the tip of the indicator before the operation starts.

For bevel cut setting

Move handle on miter section to the right and left and check that the position is stable and the angle scale and the tip of the indicator are properly aligned. Then tighten the clamp lever.

Upper surface ceiling

Wall

Lower surface

Fig. 24 Fig. 25

Outside corner

Ceiling

Wall

Inside corner

θ˚

--- 19 ---

(1) Setting to cut crown molding at positions and in Fig. 25 (See Fig. 26; tilt the head to the left.):

Turn the turn table to the right and set the miter angle as follows:

For 45˚ type crown moldings: 35.3˚ ( mark) For 38˚ type crown moldings: 31.6˚ ( mark)

Turn the head to the left and set the bevel angle as follows:

For 45˚ type crown moldings: 30˚ ( mark)

For 38˚ type crown moldings: 33.9˚ ( mark) Position the crown molding so that the lower surface ( in Fig. 24) contacts the fence as indicated in Fig. 28.

3 A

Head

Miter angle scale

Bevel angle scale

Fig. 26

(2) Setting to cut crown moldings at positions and in Fig. 25 (See Fig. 27; tilt the head to the left.):

Turn the turn table to the left and set the miter angle as follows:

For 45˚ type crown moldings: 35.3˚ ( mark)

For 38˚ type crown moldings: 31.6˚ ( mark) Tilt the head to the left and set the bevel angle as follows:

For 45˚ type crown moldings: 30˚ ( mark)

For 38˚ type crown moldings: 33.9˚ ( mark) Position the crown molding so that the lower surface ( in Fig. 24) contacts the fence as indicated in Fig. 29.

2 3

Fig. 27

Bevel angle scale

Turn table

Fence (A)

Miter angle scale

Fig. 28

Fig. 29

Fence

Table on base

Fence

Table on base

Base

Turn table

Base

Head

CAUTION: In the case of left bevel angle cutting, remove sub fence (C) before operation.

(Figs. 26 and 27)

Sub fence (C)

Fence (B)

--- 20 ---

(4) Setting to cut crown moldings at positions and in Fig. 25 (See Fig. 31; tilt the head to the right.):

Turn the turn table to the left and set the miter angle as follows:

For 45˚ type crown moldings: 35.3˚ ( mark) For 38˚ type crown moldings: 31.6˚ ( mark)

Tilt the head to the right and set the bevel angle as follows:

For 45˚ type crown moldings: 30˚ ( mark)

For 38˚ type crown moldings: 33.9˚ ( mark) Position the crown molding so that the lower surface ( in Fig. 24) contacts the fence as indicated in Fig. 33.

(3) Setting to cut crown moldings at positions and in Fig. 25 (See Fig. 30; tilt the head to the right.):

Turn the turn table to the right and set the miter angle as follows:

For 45˚ type crown moldings: 35.3˚ ( mark)

For 38˚ type crown moldings: 31.6˚ ( mark) Tilt the head to the right and set the bevel angle as follows:

For 45˚ type crown moldings: 30˚ ( mark)

For 38˚ type crown moldings: 33.9˚ ( mark) Position the crown molding so that the lower surface ( in Fig. 24) contacts the fence as indicated in Fig. 32.

3 B

Head

Miter angle scale

Bevel angle scale

Fig. 30

2 3

Fig. 31

Bevel angle scale

Turn table

Fence (A)

Miter angle scale

Fig. 32

Fig. 33

Fence

Table on base

Fence

Table on base

Base

Turn table

Base

Head

Fence (B)

--- 21 ---

Cutting method of crown molding without tilting the saw blade

6 mm wing bolt

Crown molding stopper (L) (Optional accessory)

Crown molding stopper (R) (Optional accessory)

6 mm wing bolt

Crown molding vise ass'y (Optional accessory)

(1) Crown molding stoppers (L) and (R) (optional accessories) allow easier cuts of crown molding without tilting

the saw blade. Install them to both sides of the base as shown in Figs. 34-a and 34-b. After inserting, tighten the 6 mm knob bolts to secure the crown molding guides. [ Optional accessories used ] Crown molding vise ass'y (including crown molding stopper (L))

Crown molding stopper (L) Crown molding stopper (R)

(2) The crown molding vise ass'y (optional accessory) can be mounted on either the left fence (fence (B)) or the

right fence (fence (A)). It can unite with the slope of the crown molding and vise can be pressed down. Then turn the upper knob, as necessary, to securely attach the crown molding in position. To raise or lower the vise assembly, first loosen the 6 mm knob bolt.

After adjusting the height, firmly tighten the 6 mm wing bolt; then turn the upper knob, as necessary, to securely attach the crown molding in position. (See Figs. 34-a and 34-b.)

WARNING: Always firmly clamp or vise to secure the crown molding to the fence; otherwise the

crown molding might be thrust from the table and cause bodily harm. Do not perform bevel cutting. The main body or saw blade may contact the sub fence, resulting in an injury.

CAUTION: Always confirm that the motor head does not contact the crown molding vise ass'y

when it is lowered for cutting. If there is any danger that it may do so, loosen the 6 mm knob bolt and move the crown molding vise ass'y to a position where it will not contact the saw blade.

Position crown molding with its WALL CONTACT EDGE against the guide fence and its CEILING CONTACT EDGE against crown molding stoppers as shown in Figs. 34-a and 34-b. Adjust the crown molding stoppers according to the size of the crown molding. Tighten the 6 mm wing bolt to secure the crown molding stoppers.

Fig. 34-a Fig. 34-b

Crown molding vise ass'y (Optional accessory)

Crown molding

6 mm wing bolt

Fence

6 mm knob bolt

Crown molding stopper (L) Crown molding stopper (R) (Optional accessories)

Knob

6 mm wing bolt

--- 22 ---

Side handle

Reset button

8-6. Digital Display Panel (For Model C 12LDH)

(1) Turning 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 second.

(3) Turning on the laser marker switch while the digital

display switch is on, lights up the laser marker. (On the Model C 12FDH, only the laser marker switch.)

CAUTION: When operating the digital panel, have the motor head section at the top limit position

and the blade stopped.

NOTE: Before starting to cut, align the main unit to the miter angle 0˚ and the bevel angle 0˚ and hold

down thier reset buttons for at least 0.2 second. 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.

The laser marker will not light up if the digital display switch is turned off (only the Model C 12LDH).

Do not use the main unit near equipment that generates electrical noise such as generators.

Electrical noise might cause faulty readings or operation on the digital display.

CAUTION: When operating the digital panel, have the motor head section at the top limit position and

the blade stopped.

Miter angle reset button

Bevel angle reset button

Back light ON/OFF switch (Press and the switch illuminates. Press again and the lighting turns off.)

Miter angle window (Displays arrows showing angle and direction that turn table is rotating. Left is . Right is .)

Bevel angle window (Displays arrows showing motor head bevel angle and bevel direction. Left is . Right is .)

Digital display switch (For the Model C 12LDH) (Also serves as laser marker power switch.)

Laser marker switch

Fig. 35

Fig. 36-a

CAUTION: 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.

Move the turn table left and right with the side handle loosened and set it to the correct position.

(1) Move the turn table left and right with the side handle loosened, and set the turn table to the correct position. (2) If the figures on the display and positive stop still do

not match, then return the turn table to the 0˚ position. Next move the turn table left and right with the side

handle loosened as shown in Fig. 36-b. After setting it to the correct position 0˚, press the reset button again.

Fig. 36-b

--- 23 ---

9. ADJUSTMENT OF COMPONENTS

9-1. Bevel Angle Fine Adjustment

Fig. 37-a Fig. 37-b

8 mm bolt (C)

Knob (A)

8 mm bolt (B) (Stopper for left 45˚ bevel angle)

Handle

Knob (A)

Clamp lever

Bevel plate (Stopper for right 45˚ bevel angle)

Left bevel angle

Pull

Hinge

Right bevel angle

(1) Grip the handle on the motor head and position it at the bevel angle you need. Temporarily tighten the clamp

lever.

CAUTION: If not tightened firmly enough the motor head might suddenly move or slip, causing

injuries. Be sure to tighten the motor head section enough so it will not move.

(2) Make fine adjustment to the bevel angle by gripping the handle and moving knob (A).

NOTE: Turning knob (A) clockwise allows fine adjustment of the main unit to the left (as seen from front).

Turning knob (A) counterclockwise allows fine adjustment of the main unit to the right (as seen from front). If you wish to cut left bevel angle 48˚ or right bevel angle 48˚, pull the bevel plate backwards until the hinge contacts either 8 mm bolt (C) or 8 mm bolt (B) then cut diagonally left or right.

Setting to cut left bevel angle 48˚ or right bevel angle 48˚ can be done easily.

(3) After adjusting to the desired angle, tighten the clamp lever and clamp the motor head.

CAUTION: Always check that the clamp lever is secured and the motor head is clamped. If you

attempt angle cutting without clamping the motor head, then the motor head might shift

unexpectedly causing injuries.

--- 24 ---

10. PACKING

(1) Preparation before packing

(i) Remove the dust bag from the main body. (ii) Turn the turn table 48˚ clockwise and remove the side handle. Secure the turn table with the attached hex.

socket head bolt M10.

(2) Mounting packing (C)

(i) Place packing (C) under the gear case and lower the head section. Pressing on packing (C), insert the stopper pin of the gear case to secure the head section. (At this time, check that the clamp lever for bevel angle fixation is securely locked.)

(3) Mounting packing (D)

(i) Fold packing (D) in two at the center and insert it between the gear case and the protective cover.

(4) Mounting packing (E)

(i) Insert packing (E) between sub fence (B) and the gear case.

(5) Mounting packings (A) and (B)

(i) Place the base packing and the sleeve in the carton box and place the power tool on them aligning with the

concave portion of the base packing. (ii) Place packing (B) aligning the hole of packing (B) with the housing. (iii) Place packing (A) in the carton box.

(6) Mounting upper packing

(i) Place the upper packing on packings (A) and (B). Close the carton box. See Figs. 38, 39 and 40 for detail.

Clamp lever for bevel angle fixation

Fig. 38

Upper packing

Fig. 40

Turn by 52˚.

Hex. socket head bolt M10

Packing (C)

Protective cover

Packing (D)

Packing (A)

Lower the head section.

Sub fence (B)

Packing (E)

Fig. 39

Packing (B)

Carton box

Base packing

Sleeve

--- 25 ---

11. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

11-1. Precautions in Disassembly and Reassembly of the Laser Marker

Do not stare into the laser emitting aperture during disassembly and reassembly of the laser marker. Do not observe beam directly with an optical instrument. Use of controls or adjustments or performance of procedures other than those specified in this TECHNICAL DATA AND SERVICE MANUAL and the Instruction Manual may result in hazardous radiation exposure.

11-2. Disassembly

Special attention in disassembly should be given to the following items. The circled numbers in the figures and the [Bold] numbers in the descriptions below correspond to the item numbers in the pars list and exploded assembly diagram of the Model C 12LDH. For the Model C 12FDH, refer to the parts list separately.

Be sure to first disconnect the power plug when performing disassembly or replacement of the saw blade.

A. Turn table ass'y, base ass'y and hinge ass'y

Tools required:

• Phillips screwdriver

• Flat-blade screwdriver

• Snap ring pliers (For C type axis)

• Box wrench 13 mm

• Box wrench 17 mm

• Box wrench 19 mm

• Wrench 10 mm

• Hex. bar wrench 4 mm

• Hex. bar wrench 6 mm

• Nipper

Fig. 41

--- 26 ---

1. Remove the two Machine Screws (W/Washers) M4 x 10 (Black) [71] to remove two Indicators (B) [70]. Remove the two Machine Screws (W/Washers) M5 x 16 [50] to remove the Dust Guide Ass'y [49].

2. Remove the Machine Screw (W/Washers) M4 x 16 [63] to remove the Scale Plate Ass'y [60].

3. Remove the Flat Hd. Screw M6 x 25 [151] by turning the Nylon Nut M6 [153] with a wrench 10 mm. Remove Sub Fence (A) Ass'y [169] and Plate (D) 24.5 mm [171]. Remove the Flat Hd. Screw M6 x 35 [152] by turning the Nylon Nut M6 [153] with a wrench 10 mm. Remove Sub Fence (B) Ass'y [155] and Plate (D) 35 mm

[154]. Loosen Knob (B) [146] and remove the Flat Hd. Screw M6 x 25 [151]. Remove Sub Fence (C) Ass'y [148], Bolt Washer M6 [177] and Spring (C) [147].

4. Remove the four Bolts M8 x 35 [142], Spring Washers M8 [143] and Bolt Washers M8 [144] to remove Fence (A) [172] and Fence (B) [150].

5. Loosen the Clamp Lever [20] and remove the Machine Screw (W/Washers) M6 x 20 (Black) [19]. Turn the Bolt (Left Hand) M10 [21] and remove it from the Hinge Ass'y [43] together with Knob (A) [22], Planet Gear [23], Pinion (A) [24], Ring Gear [25], Plate (H) [26], Tapping Screw (W/Flange) D4 x 16 (Black) [27] and Retaining Ring for D28 Shaft [28].

Fig. 42

109

110

108

105

104

106

107

101 102 103

111

112

113

114

123

124

125

142

143

144

146

147

148

149

151

152

153

154

155

156

157

150

158 159 160

162

161

173

174

175 176

126

127

128

126

129

130

131

145

132

133

163

164 165

167

168

169

170

153

171

142

143

144

172

151

121

177

606

607

608

--- 27 ---

7. Remove the Retaining Ring for D12 Shaft [34], Hex. Socket Hd. Bolt M5 x 16 [73] and Spring Washer M5 [74]. Then the Hinge Plate [75] can be removed.

8. Remove the four Machine Screws M4 x 10 [37] to remove the Hinge Cover [38]. Remove the Machine Screw (W/Washers) M4 x 12 (Black) [17] and the Nylon Clip [18]. Press the Encoder [33] turning clockwise and secure it with the Machine Screw M5 x 20 [29].

NOTE: When reinstalling the Hinge Ass'y [43] to the Turn Table Ass'y [108], loosen the Machine Screws

M5 x 20 [29] securing the Encoder [33] (about one turn) and move the Encoder [33] to engage with Gear (B) [68].

9. Remove the four Machine Screws (W/Washers) M5 x 16 [103] to remove Table Insert (B) [102] and Table Insert (A) [101] from the Turn Table Ass'y [108].

10. Remove the Machine Screw (W/Washers) M4 x 16 [109] to remove Cord Cover (A) [110]. Disconnect the connector between Cord (A) 310 mm [123] and Cord (C) 300 mm [124]. Then it can be drawn out toward the rear of the Hinge Ass'y [43]. Remove Shaft (D) [35] from the Nylon Nut M12 [72]. Then the Washer M6 [36], Hinge Ass'y [43] and Liner (B) [65] can be removed from the Turn Table Ass'y [108].

11. Disconnect the connector of Cord (A) 310 mm [123] from the Encoder [127]. Remove the Machine Screw M5 x 20 [29] and Bolt Washer M6 [30]. Remove Spring (C) [31] with a flat-blade screwdriver. Then the Encoder [33] can be removed from the Hinge Ass'y [43].

12. Remove the two Hex. Socket Hd. Bolts M8 x 16 [78] and two Spring Washers M8 [77]. Remove the Side Handle [82]. Remove the Spring Plate [76] from the Turn Table Ass'y [108].

NOTE: When reassembling after removal of the Spring Plate [76], adjust the squareness of the TCT Saw

Blade 305 mm-D25.4 Hole-NT32 [250] to Fence (A) [172] and Fence (B) [150].

13. Press the Encoder [127] turning clockwise onto the back of the Turn Table Ass'y [108] and secure it with the Machine Screw M5 x 20 [130].

NOTE: When reinstalling the Turn Table Ass'y [108] to the Base Ass'y [167], loosen the Machine Screw

M5 x 20 [130] securing the Encoder [127] (about one turn) and move the Encoder [127] to engage with Gear (A) [160]. Adjust the squareness of the TCT Saw Blade 305 mm-D25.4 Hole-NT32 [250] to Fence (A) [172] and Fence (B) [150].

14. Remove the Nylon Nut M8 [104] and Washer (F) [105] to remove the Turn Table Ass'y [108] from the Base Ass'y [167].

15. Remove the Machine Screw M4 x 8 [133] to remove the Dust Cover [132].

16. Disconnect the connector of Cord (A) 100 mm [112] from the Encoder [127]. Remove the Machine Screw M5 x 20 [130] and remove Spring (C) [126] with a flat-blade screwdriver. Then the Encoder [127] can be removed from the Turn Table Ass'y [108].

--- 28 ---

246

260

261

252

253

254

255

257

256

258

259

262

263

264

262

270

271

272

273

274

202

279

280

281

206

282

283

284

285

286

287

202

B. Armature ass'y

Belt, pinion ass'y and spindle ass'y

Tools required:

• Phillips screwdriver

• Plastic hammer

Fig. 43

1. Remove the three Machine Screws (W/Washers) M5 x 16 [202] to remove the Pulley Cover [286].

2. Pull the Belt (200H10) 16 x 508 [273] outward and turn it to remove from Pulley (A) [270] and the Pinion Ass'y [274].

3. Remove the two Machine Screws M5 x 20 [282] and Spring Washers M5 [206]. Remove Bearing Holder (B) [281] by lightly tapping the Gear Case [246] with a plastic hammer.

4. Pull out the Pinion Ass'y [274] by lightly tapping the Gear Case [246] with a plastic hammer.

5. Remove the two Machine Screws (W/Washers) M6 x 20 (Black) [256] and remove the Spindle Ass'y [252] by lightly tapping the Gear Case [246] with a plastic hammer.

6. Remove the Machine Screw (W/Washers) M4 x 10 (Black) [285] to remove Stopper Pin (B) [284] and the Spring [283].

NOTE: Be careful when removing the Machine Screw (W/Washers) M4 x 10 (Black) [285] because Stopper

Pin (B) [284] and Spring [283] pop out.

--- 29 ---

201

202

203

205

206

207

208

209

210

212

202

205

206

207

214

215

216

217

218

221

222

219

220

223

224

225

226

212

228

229

230

231

232

233

234

235

236

237

238

239

241

242

240

243

244

245

247

246

265

266

267

265

270

271

272

286

287

202

213

214

247

204

C. Armature ass'y

Switch, switching power supply, stator ass'y, armature ass'y and pulley (A)

Tools required:

• Phillips screwdriver

• Flat-blade screwdriver

• Hex. bar wrench 4 mm

• Nipper

• Plastic hammer

• Box wrench 13 mm

Fig. 44

1. Remove the three Machine Screws(W/Washers) M5 x 16 [202] to remove the Pulley Cover [286].

2. Remove the Tapping Screw (W/Flange) D4 x 16 (Black) [213] to remove Cord Cover (B) [204].

3. Remove the three Machine Screws (W/Washers) M5 x 16 [202], Tapping Screws (W/Flange) D4 x 16 (Black) [212] and two Hex. Socket Hd. Bolts M5 x 70 [205] to remove the right side of the Handle Ass'y [203].

4. Cut off the Connector 50092 [214] that crimps the internal wires coming from the Cord [201], Stator Ass'y 120V [232] and Switching Power Supply [220] at the root of the internal wires.

5. Cut off the Connector 50092 [214] that crimps the internal wires coming from the Cord [201], Internal Wire (A) (Black) [225] and Switch (A) [216] at the root of the internal wires. Cut off the two Connectors 50092 [214] that crimp the internal wires coming from the Stator Ass'y 120V [232], Internal Wire (A) (Yellow) [224] and Internal Wire (A) (Blue) [223] at the root of the internal wires.

6. Disconnect the faston that connects the Switching Power Supply [220] with Switch (A) [216]. Disconnect the connector that connects Switch (B) [217] with Cord (B) [218].

--- 30 ---

7. Removal of the Switch (3P Faston Type) [226] and the Switching Power Supply [220] (a) After the above steps from 1 to 5, remove the two Machine Screws (W/Washers) M5 x 16 [202] and Hex.

Socket Hd. Bolts M5 x 70 [205] to remove the left side of the Handle Ass'y [203].

(b) Remove the three Tapping Screws (W/Flange) D4 x 20 (Black) [221] and remove the upper part of Switch

Handle (A).(B) Set [222].

Internal Wire (A) (Yellow) [224] and Internal Wire (A) (Black) [225].

NOTE: The Switch (3P Faston Type) [226] is connected to Internal Wires (A) [223][224][225] with the lock-

type faston. Pull out the faston while pressing the lock lever.

(d) Disconnect the connector that connects Cord (B) [218] to the Switching Power Supply [220]. Remove the

Tapping Screw (W/Flange) D4 x 16 [219]. Then the Switching Power Supply [220] can be removed.

8. Removal of the Stator Ass'y 120V [232] (a) After the above steps from (1) to (5), remove the Brush Cap [238], Carbon Brush [237] and four Machine

Screws (W/Washers) M5 x 40 (Black) [229]. Then the Housing Ass'y [234] can be removed from the Gear Case [246].

(b) Remove the two Hex. Hd. Tapping Screws D5 x 55 [233] that secure the Stator Ass'y 120V [232]. Remove the

two Brush Terminals [231] from the Brush Holder [236].

Case [246] is mounted with a plastic hammer.

9. Removal of the Armature Ass'y 120V [240] (including the ball bearing) (a) Remove the Housing Ass'y [234] from the Gear Case [246] according to the procedure of the above step

8-(a).

(b) Remove the Armature Ass'y 120V [240] (including the ball bearing) by lightly tapping the Gear Case [246].

10. Removal of Pulley (A) [270] (a) Loosen the Nut M10 [272] of the Armature Ass'y 120V [240] that was removed in the above step (9) and

remove the Super Lock Washer [271] and Pulley (A) [270].

--- 31 ---

246

260

261

248

249

250

251

253

254

255

257

256

258

259

262

263

264

262

288

289

288

290

291

292

293

294

295

296

297

298

300

301

302

304

299

303

305

252

D. Safety cover and link

Safety cover and link

Tools required:

• Phillips screwdriver

• Box wrench 17 mm (standard accessory)

Fig. 45

1. Remove the two Machine Screws M5 x 10 [262]. Then the Spindle Cover [264] and the Bolt Washer M5 [263] can be removed.

2. Remove Bolt (A) M10 [248] with the attached 17-mm box wrench. Remove Washer (B) [249], TCT Saw Blade 305 mm-D25.4 Hole-NT32 [250] and Washer (A) [251] in this order.

3. Remove Special Screw (C) M5 [291] and Special Screw M6 [290]. Then the Link [289], Washer M10 [292] and Washer M7 [288] can be removed.

4. Remove the two Machine Screws M5 x 10 [299] and one Flat Hd. Screw M5 x 10 (Black) [305]. Then the protective cover can be removed entirely from the Gear Case [246]. Remove the Flat Hd. Screw M4 x 10 (Black) [293] to remove Protective Cover (B) [294].

5. Remove the three Machine Screws M4 x 8 [304] to remove Protective Cover (A) [297].

--- 32 ---

245

247

201

202

203

205

206

207

208

209

210

212

202

205

206

207

214

215

216

217

218

221

222

219

220

223

224

225

226

265

266

267

265

213

214

204

247

E. Laser module (A) and spring

Laser module (A) and spring

Tools required:

• Phillips screwdriver

• Hex. bar wrench 5 mm

• Hex. bar wrench 3 mm

• Hex. bar wrench 2.5 mm

• Plastic hammer

• Hammer

• Long-nose pliers

Fig. 46

1. Removal of Laser Module (A) [14] (a) Remove the Tapping Screw (W/Flange) D4 x 16 (Black) [213] to remove Cord Cover (B) [204]. (b) Disconnect the connector that connects Cord (B) [218] to Laser Module (A) [14]. (c) Remove the two Machine Screws (W/Washers) M4 x 16 [265] to remove the Gear Case Cover Ass'y [266]. (d) Remove the two Machine Screws (W/Washers) M4 x 12 (Black) [17] and two Nylon Clips [247] to disconnect

the internal wire of Laser Module (A) [14].

(e) Remove the two Machine Screws (W/Washers) M5 x 16 [50] and remove the Dust Guide Ass'y [49] from the

Hinge Ass'y [43].

--- 33 ---

(f) Remove the two Hex. Socket Hd. Bolts M6 x 20 [44] to remove the Laser Holder Ass'y [83]. (g) Remove the Split Pin D2 x 12 [3] with long-nose pliers. Loosen the Special Bolt M5 [8] and lightly tap the Roll

Pin D3 x 14 [5] with a hammer to remove it. Then the Laser Base Ass'y [10], two Springs (C) [6], Laser Holder (A) [2], Laser Holder (B) [4] and Laser Module (A) [14] can be removed.

(h) Turn Laser Module (A) [14] mounted to Laser Holder (A) [2] counterclockwise to remove Laser Module (A)

[14] from Laser Holder (A) [2].

NOTE: Before mounting Laser Module (A) [14] to Laser Holder (A) [2], apply Super X No. 8080 (Cemedine

Co., Ltd.) to the threaded portion of Laser Holder (A) [2].

2. Removal of Spring (A) [42]

(a) After the above steps from 1-(a) to (f), remove the Hex. Socket Hd. Bolt M6 x 16 [245].

NOTE: Note that the Gear Case [246] moves upward when the Hex. Socket Hd. Bolt M6 x 16 [245] is

removed because the Hex. Socket Hd. Bolt M6 x 16 [245] acts as an upper limit stopper of the Gear Case [246].

(b) Remove the Seal Lock Hex. Socket Set Screw M6 x 10 [40]. Holding the Gear Case [246], slightly tap Shaft

F. Vise ass'y

Tool required:

• Phillips screwdriver

Fig. 47

1. Remove the Wing Bolt M6 x 15 [136] to remove the Vise Shaft [141].

2. Remove the Machine Screw M4 x 10 [140] to remove the Vise Plate [139].

3. Remove the Knob Bolt [135] from the Screw Holder [137].

--- 34 ---

109

110

108

105

104

106

107

101 102 103

111

112

113

114

123

124

125

115

116

119

118

120

117

121

G. Digital display (Models C 12LDH)

Tool required:

• Phillips screwdriver

Fig. 48

1. Remove the two Machine Screws (W/Washers) M5 x 16 [103] securing Table Insert (A) [101] and remove Table Insert (A).

2. Remove the Machine Screw (W/Washers) M4 x 16 [109] to remove Cord Cover (A) [110].

3. Press the four claws of the Indication Panel Ass'y [116] to remove the Indication Panel Ass'y [116] and Packing (D) [117]. Remove the four Machine Screws (W/Washers) M4 x 16 [119].

4. Remove Cord (C) 300 mm [124], Cord (C) 330 mm [125] and Cord (D) [114] from the Monitor Ass'y [118]. Then the Monitor Ass'y [118] can be removed from the Turn Table Ass'y [108].

NOTE: Be careful not to disconnect the cable connected to the Monitor Ass'y [118] when removing from

the Turn Table Ass'y [108].

--- 35 ---

11-3. Reassembly

Reassembly can be accomplished by following the disassembly procedures in reverse. However, special attention should be given to the following items.

(1) Prior to reassembly, measure the insulation resistance of the armature, stator, switch and other electrical

components and confirm that the insulation resistance of each part is more than 5 M Ω.

(2) When replacing Spring (A) [42], apply 5 grams of Hitachi Motor Grease to the inner circumference of new

Spring (A) [42] prior to reassembly.

(3) When replacing Liner (A) [157], apply Hitachi Motor Grease to the sliding surface of the Base Ass'y [167] prior

to reassembly.

(4) When replacing the Return Spring [298], apply 2 grams of Hitachi Motor Grease to the inner circumference of

the new Return Spring [298] prior to reassembly.

(5) When replacing Liner (B) [65], apply 5 grams of Hitachi Motor Grease to the sliding surface of the Turn Table

Ass'y [108] prior to reassembly.

--- 36 ---

11-4. Wiring Diagram

Carefully ensure that wiring is accomplished as illustrated below. As incorrect wiring will result in lack of rotation, reverse rotation or other malfunctions, close attention is absolutely necessary.

WARNING: Be sure to turn off Switch (A) [216] at the front of the handle ass'y and unplug the power

cord plug from the receptacle before replacing Laser Module (A) [14] and the Switching Power Supply [220]. Do not stare into beam while the laser marker is lighting.

Wiring diagram (C 12LDH)

Fig. 49

--- 37 ---

Wiring diagram (C 12LDH)

Fig. 50

Fig. 51

Connect the connectors of Switch (B) [217] and Cord (B) [218].

Wind tetron tape 1.5 or 2 turns.

Cord (B) [218]

Switch (B) [217]

Switch (A) [216]

Connector 50092 [214]

Cord (B) [218] Switching Power Supply [220]

Connector 50092 [214]

Switch (3P Faston Type)

[226]

Switching Power Supply [220]

Cord [201]

--- 38 ---

Fig. 53

Fig. 54

Wind tetron tape 1.5 or 2 turns.

Connector 50092 [214]

Switching Power Supply [218]

Connector 50092 [214]

Switch (3P Faston Type)

[224]

Switching Power Supply [218]

Wiring diagram (C 12FDH)

Switch (A) [216]

Cord [201]

--- 39 ---

Wiring diagram (C 12FDH)

Fig. 52

--- 40 ---

11-5. No-load Current

After no-load operation for 30 minutes, the no-load current values should be as follows.

11-6. Reassembly Requiring Adjustment

(1) Adjustment of squareness between the saw blade (dummy disc) and the fences

Voltage, frequency No-load current

120 V

7.9 0.5 A

After disassembly or replacement of the Base Ass'y [167], Turn Table Ass'y [108], Fence (A) [172], Fence (B) [150] or Hinge Ass'y [43], it is necessary to perform necessary adjustment to ensure that the fences are positioned at precise right angles with relation to the saw blade (or dummy disc). Align fence (B) with the saw blade (or dummy disc), and adjust them as necessary to ensure squareness (tolerance: 100 mm). As shown in Fig. 55, use a square to adjust fence (B) so that it is square with the saw blade. Next, use a straight edge to adjust fence (A) so that it is exactly aligned with fence (B). Finally, use the square to confirm squareness of fence (A) with the saw blade (tolerance: 0.4/100 mm).

(2) Reassembly of the Turn Table Ass'y [108]

When reassembling the Turn Table Ass'y [108] and the Base Ass'y [167], tighten the Nylon Nut M8 [104] so that the Turn Table Ass'y [108] turns smoothly without excessive play or vibration. During reassembly, liberally apply grease (Hitachi Motor Grease) at the point marked "A" in Fig. 56.

Fig. 56

Fig. 55

[150]

[172]

Nylon Nut M8 [104]

Shaft (B) [168]

Base Ass'y [167]

Turn Table Ass'y [108]

--- 41 ---

Tolerance

0.2/280 (0.008"/11")

0.2/height of fence (0.008"/height of fence)

0.2 (0.008")

0.2/100 (0.008"/4")

0.2 ( 0.008")

0.1 ( 0.004")

11-7. Lubrication

Advise the customer to lubricate the machine as indicated below at least once a month. Also, prior to applying lubrication, any sawdust, dirt or other foreign matter should be thoroughly wiped away with a soft cloth.

(1) Swiveling section of the Gear Case [246] and the Hinge Ass'y [43]

Coat the swiveling and sliding portion of the Gear Case [246] and the Hinge Ass'y [43] with machine oil.

(2) Vise ass'y section

Coat the screw thread portion of the Knob Bolt [135] of the Vise Ass'y [134] with machine oil.

(3) Swiveling section of the Turn Table Ass'y [108] and the Hinge Ass'y [43]

Coat the swiveling and sliding portion of the Turn Table Ass'y [108] and the Hinge Ass'y [43] with machine oil.

(4) Turning section of Fence (A) [172] and Sub Fence (A) Ass'y [169]

(5) Turning section of Fence (B) [150] and Sub Fence (B) Ass'y [155]

11-8. Product Precision

On completion of reassembly, confirm precision tolerances.

Item

Run-out of dummy disc

Squareness between base and fences (A) and (B)

Flatness between fence (A) and fence (B)

Squareness between dummy disc and fences (A) and (B)

Squareness between dummy disc and turn table

Surface alignment of base and turn table (Use the upper surface of the base as a reference.)

(Unit: mm)

Fig. 57

--- 42 ---

11-9. Adjustment of Laser Marker Accuracy

(1) Construction of laser marker and functions of each component

Fig. 58

CAUTION: 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. Do not stare into beam while the laser marker is lighting. Do not observe beam directly with an optical instrument. If your eye is exposed directly to the laser beam, it can be hurt. Instruct the customer not to stare into beam. In addition, instruct the customer not to give strong impact to the laser marker (main body of tool) and not to dismantle the laser marker. Use of controls or adjustments or performance of procedures other than those specified in this TECHNICAL DATA AND SERVICE MANUAL and the Instruction Manual may result in hazardous radiation exposure.

Laser Holder (B) [4]

Spring (C) [6]

Roll Pin D3 x 14 [5]

Split Pin D2 x 12 [3]

Needle pin

Laser Base Ass'y [10]

Hex. bar wrench (2.5 mm) inlet

Spring (B) [1]

Hex. Socket Set Screw M5 x 6 [7]: The squareness between the laser line and the fence surface can be adjusted by turning this screw.

Laser Holder (A) [2]: The squareness between the laser line and the base surface can be adjusted by turning the minus groove at the rear.

Special Bolt M5 [8]: The laser line can be aligned with the left side or the right side of the cutting width (saw blade) by turning this bolt.

--- 43 ---

(2) Adjustment of squareness with the fence surface

The laser line inclines to the left by turning the Hex. Socket Set Screw M5 x 6 [7] clockwise and inclines to the right by turning counterclockwise. The squareness of the laser line with the fence surface can be adjusted in this manner.

Fig. 59

Fig. 60

(3) Adjustment of squareness with the base surface

The laser line inclines to the right by turning the minus groove clockwise and inclines to the left by turning counterclockwise. The squareness of the laser line with the base surface can be adjusted in this manner.

Fig. 61 Fig. 62

[7]

[246]

[266]

[172]

[150]

[10]

[172]

[150]

[246]

[266]

[2]

Trun Table Ass'y [108]

--- 44 ---

(4) Adjustment of the laser marker

Adjust the laser marker according to the following steps from to . Adjust the product accuracy first because the accuracy of the laser marker is adjusted aligning the cut surface of the workpiece.

Make a right-angle ink line on the workpieces of 38 mm in height and 89 mm in width. Adjust the laser marker and perform cutting. If the ink line matches the cutting position, the accuracy adjustment is completed. (Visually check that the laser marker accuracy is 0.5/100 or less for both the squareness with the base surface and the squareness with the fence surface.)

To check the accuracy of the laser marker, move the laser marker horizontally using the Special Bolt M5 [8] again and check that the laser beam is applied to the entire cutting surface. If the laser beam is applied to the cutting surface in parallel, the fine fuzz reflects the laser beam and the entire cutting surface becomes bright.

Turn the Hex. Socket Set Screw M5 x 6 [7] and the minus groove at the rear of Laser Holder (A) [2] so that laser beam is applied to the entire cutting surface of the workpiece. If the laser line gets out of the cutting surface during the laser line adjustment, turn the Special Bolt M5 [8] to shift the laser line onto the cutting surface, top edge or rear edge of the cutting surface then adjust the accuracy of the laser line. (Repeat this operation 3 or 4 times depending on the adjusting conditions of the laser marker.) Refer to the above (2) and (3) for the relation between the Hex. Socket Set Screw M5 x 6 [7] and the laser line, and the relation between the minus groove at the rear of Laser Holder (A) [2] and the laser line.

First, hold a workpiece of 38 mm in height and 89 mm in width with the vise and perform right-angle cutting.

Light up the laser marker with the workpiece held in the vise. Turn the Special Bolt M5 [8] to shift the laser line onto the cutting surface, top edge or rear edge of the cutting surface.

Fig. 63

Fig. 64

Fig. 65

[7]

--- 45 ---

11-10. Tightening Torque

(1) Model: C 12LDH

• Machine Screw (W/Washers) M5 x 16 [15] [103] [202] 43.4 in-lbs. (4.9 N•m, 35 kgf•cm)

• Machine Screw (W/Washers) M4 x 12 (Black) [17] 10.4 in-lbs. (1.2 N•m, 12 kgf•cm)

• Machine Screw (W/Washers) M6 x 20 (Black) [19] 43.4 in-lbs. (4.9 N•m, 35 kgf•cm)

• Tapping Screw (W/Flange) D4 x 16 [27] [210] [212] [213] [219] 17.4 in-lbs. (2 N•m, 20 kgf•cm)

• Machine Screw M5 x 20 [29] [130] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

• Machine Screw M4 x 10 [37] [66] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Seal Lock Hex. Socket Set Screw M6 x 10 [40] 43.4 in-lbs. (4.9 N•m, 35 kgf•cm)

• Hex. Socket Hd. Bolt M6 x 20 [44] 86.8 in-lbs. (9.8 N•m, 100 kgf•cm)

• Machine Screw (W/Washers) M5 x 16 [50] 28.4 in-lbs. (3.3 N•m, 34 kgf•cm)

• Machine Screw M4 x 20 [57] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Machine Screw M4 x 6 [59] 3.4 in-lbs. (0.39 N•m, 4 kgf•cm)

• Machine Screw (W/Washers) M4 x 16 [63] [109] [265] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Machine Screw (W/Washers) M4 x 10 (Black) [71] [106] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Hex. Socket Hd. Bolt M5 x 16 [73] 60.8 in-lbs. (5.8 N•m, 60 kgf•cm)

• Hex. Socket Hd. Bolt M8 x 16 [78] 195.3 in-lbs. (22 N•m, 225 kgf•cm)

• Machine Screw (W/Sp. Washers) M4 x 10 [80] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Machine Screw (W/Washers) M4 x 16 [111] 10.4 in-lbs. (1.2 N•m, 12 kgf•cm)

• Machine Screw (W/Washers) M4 x 16 [119] 12.2 in-lbs. (1.37 N•m, 14 kgf•cm)

• Machine Screw M4 x 8 [133] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Machine Screw M4 x 10 [140] [261] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Bolt M8 x 35 [142] 86.8 in-lbs. (9.8 N•m, 100 kgf•cm)

• Flat Hd. Screw M6 x 25 [151] 13 in-lbs. (1.47 N•m, 15 kgf•cm)

• Machine Screw M5 x 16 (Black) [158] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

• Bolt M6 x 10 [163] 43.4 in-lbs. (4.9 N•m, 50 kgf•cm)

• Machine Screw (W/Sp. Washer) M5 x 16 [164] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

• Hex. Socket Hd. Bolt M5 x 70 [205] 17.4 in-lbs. (2 N•m, 20 kgf•cm)

• Tapping Screw (W/Flange) D4 x 20 (Black) [221] 17.4 in-lbs. (2 N•m, 20 kgf•cm)

• Machine Screw (W/Washers) M5 x 40 (Black) [229] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

• Hex. Hd. Tapping Screw D5 x 55 [233] 26 in-lbs. (2.9 N•m, 30 kgf•cm)

• Hex. Socket Set Screw M5 x 8 [235] 8.7 in-lbs. (1 N•m, 10 kgf•cm)

• Hex. Socket Hd. Bolt M6 x 16 [245] 43.4 in-lbs. (4.9 N•m, 35 kgf•cm)

• Bolt (A) M10 [248] 130.2 in-lbs. (14.7 N•m, 150 kgf•cm)

• Flat Hd. Screw M4 x 10 (Black) [253] [293] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Machine Screw (W/Washers) M6 x 20 (Black) [256] 43.4 in-lbs. (4.9 N•m, 35 kgf•cm)

• Machine Screw M5 x 10 [262] [299] [303] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

• Machine Screw M5 x 20 [282] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

• Machine Screw (W/Washers) M4 x 10 (Black) [285] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Special Screw M6 [290] 43.4 in-lbs. (4.9 N•m, 35 kgf•cm)

• Special Screw (C) M5 [291] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

• Machine Screw M4 x 8 [304] 15.6 in-lbs. (1.8 N•m, 18 kgf•cm)

• Flat Hd. Screw M5 x 10 (Black) [305] 30.4 in-lbs. (3.4 N•m, 35 kgf•cm)

--- 46 ---

a Inaccurate

squareness between the turn table and the saw blade causes the saw blade to cut into the workpiece at an angle.

b Excessive deflection

of the saw blade

(Excessive vibration)

c Inaccurate

squareness between the fence (A), fence (B) and the saw blade

d Inaccurate surface

flatness of the fence (A) and fence (B) causes workpiece to move irregularly, causing poor squareness of cut surface.

• Adjust squareness with the Nylock Hex. Socket Hd. Bolt M8 x 20 [69].

• Replace the Hinge Ass'y [43], Gear Case [246] or the Turn Table Ass'y [108] (if deformed).

• Replace the TCT Saw Blade 305 mm-D25.4 Hole-NT32 [250].

• Check Washers (A) [251] and (B) [249] for dents, and replace them if dented.

• Loosen the Bolt M8 x 35 [142] and adjust the squareness.

• Replace Fence (A) [172] or Fence (B) [150].

• Loosen the Bolt M8 x 35 [142] and adjust the squareness.

• Replace Fence (A) [172] or Fence (B) [150].

0.2/100

(Dummy disc)

(Fig. 66)

0.2/280

(Dummy disc)

0.2/100

(Fig. 67)

0.2 or less (Fig. 68)

12. REPAIR GUIDE

Inaccurate cutting

•••

Inaccurate squareness of the cut surface

•••

Cut surfaces do not fit together properly.

Fig. 66

Fig. 67

Fig. 68

Item Phenomenon Cause

Factory

standard

Inspection, repair or

adjustment

Unit: mm

------

e Loose fitting of

swiveling portion of the hinge and the gear case or sluggish

movement. As a

result, components may be deformed because of unstable gear case or because the operator applies excessive pressure during operation.

f The workpiece moves

during cutting because it is bent or deformed.

• Check the fitting surfaces of the Hinge Ass'y [43], Gear Case [246] and Shaft (B) [168] for any foreign substances (such as cutting dust), and remove it as necessary.

• Correct bend, flex or other deformation by planing and try cutting.

Fence (A)

Fence (B)

--- 47 ---

• Same as the Item 1- b .

• Replace Washers (A) [251] and (B) [249].

• Same as the Item 1- a .

• Same as the Item 1- e .

• Correct warp or bend with planer.

• Recheck the items a and b .

a Large deflection of the

saw blade (It causes rough cut surface.)

b Each surface

parallelism of washers (A) and (B) is inaccurate due to surface defects such as impact marks and scratches.

c Inaccurate

squareness between the turn table and the saw blade causes the saw blade to cut at an improper angle and make cutting marks.

d Loose fitting of

swiveling portion of the hinge and the gear case or sluggish

movement. e Cutting operation

becomes sluggish because workpiece is warped or bent.

f Excessive vibration

Rough cut surface Parallelism A

0.2/280

(Dummy disc)

(Fig. 69)

0.2/100

(Fig. 66)

-----

Item

Phenomenon

Cause

Factory

standard

Inspection, repair or

adjustment

Fig. 69

a Excessively fast

cutting speed

b Core diameter of

extension cord is too small.

c Excessive cutting force

is applied due to dull saw blade.

d Incorrect saw blade is

used.

e The saw blade binds in

workpiece during cutting because workpiece is warped or bent.

3 Saw blade is locked. -----

-----

• Reduce cutting speed.

• Use a thicker and shorter extension cord.

• Replace the saw blade.

• Use a suitable Hitachi-supplied saw blade.

• If the saw blade has a large number of teeth, the cutting resistance will be increased.

When using a saw blade with a

large number of teeth, reduce the cutting speed.

• Correct workpiece deformation with a planer.

--- 48 ---

a The power cord is not

connected to power supply.

b The carbon brush

wear exceeds allowable limit (5 mm).

c Contact failure of the

micro switch

a Power supply voltage

is lower than rated voltage.

------

• Check power supply voltage.

• Connect the power cord to power supply.

• Check the Carbon Brushes (1 Pair) [237] for wear.

• Replace the Carbon Brushes (1 Pair) [237].

• Check the Switch (3P Faston Type) [226] for conductivity.

• Replace the Switch (3P Faston Type) [226].

• Check power supply voltage.

• Check if extension cord is

appropriate.

Item

Phenomenon

Cause

Factory

standard

Inspection, repair or

adjustment

Saw blade does not rotate when switch is triggered.

Saw blade runs too slow (not within 3,600 --- 4,400 min-1).

a Improper wiring

b Switch (B) failure

c Switch (A) failure (Only Model C 12LDH)

d Switching power

supply failure

e Laser module ass'y

failure

a Switching power

supply failure

b Laser module ass'y

failure

6 Laser marker does not

light.

------

• Check the wiring.

• Check Switch (B) (1P Type) [217] for conductivity.

• Replace Switch (B) (1P Type) [217].

• Check Switch (A) (1P Type) [216] for conductivity.

• Replace Switch (A) (1P Type) [216].

• Check the Switching Power Supply [220] for conductivity, input and output referring to "11-4. Wiring Diagram".

• Replace the Switching Power Supply [220].

• Replace Laser Module (A) [14].

• Same as item 6-(d).

• Same as item 6-(e).

Laser light is poor or strong.

--- 49 ---

a Ink line is not right

angle.

b Laser marker accuracy

is not adjusted properly.

c Product accuracy is

not good.

------

0.2/100

(Figs. 70 and 71)

• Make a correct ink line again.

• Readjust the accuracy of the laser marker. (Refer to "11-9. Adjustment of Laser Marker Accuracy".)

• Readjust the accuracy of the product and the laser marker.

Item

Phenomenon

Cause

Factory

standard

Inspection, repair or

adjustment

Laser line does not match the ink line.

Fig. 70

Fig. 71

a Laser marker is

horizontally deviated from the saw blade.

b Laser marker accuracy

is not adjusted properly.

------

• Adjust the position of the laser line. (Refer to "8-1. Position Adjustment of Laser Line".)

• Same as item 8-(b).

Laser line does not match the cutting position.

a Improper wiring b Monitor failure

c Monitor ass'y failure

d Switching power

supply failure

------

• Check the wiring.

• Replace the Monitor Ass'y [118].

• Check the Monitor Ass'y [118] for conductivity.

• Replace the Monitor Ass'y [118].

• Check the Switching Power Supply [220] for conductivity.

• Replace the Switching Power Supply [220].

Digital display does not indicate anything. (Model C 12LDH)

--- 50 ---

Item

Phenomenon

Cause

Factory

standard

Inspection, repair or

adjustment

a Same as item 10- a to d .

b Encoder failure

c Cord (D), cord (C) 330 mm, cord (A) 100 mm, cord (C) 330 mm and cord (A) 310 mm are disconnected.

d Deformation of spring plate

e Loose spring plate

------

• Same as item 10- a to d .

• Replace the Encoder [127].

• Replace the Encoder [33].

• Replace Cord (D) [114], Cord (C) 330 mm [125] or Cord (A) 100 mm [112].

• Replace Cord (D) [114], Cord (C) 300 mm [124] or Cord (A)

310 mm [123].

• Adjust the squareness of the miter angle of the main body and replace the Spring Plate

[76].

• Adjust the squareness of the miter angle of the main body

and replace the Spring Plate [76].

Digital display does not indicate properly. (Model C 12LDH)

(Miter angle)

(Bevel angle)

(Miter angle)

(Bevel angle)

a Monitor failure

• Replace the Monitor Ass'y [118].

Angle indicated on the digital display can not be reset.

Back light of digital display can not be turned on/off. (Model C 12LDH)

--- 51 ---

13. STANDARD REPAIR TIME (UNIT) SCHEDULES

MODEL 10 20 30 40

70 min.

Fixed

Variable

C 12LDH

Work Flow

Cord Cover (B) Pulley Cover

Link Protective

Cover (B)

Protective

Cover (A) Return Spring Cover Plate (B)

Ass'y

Cover Plate (A)

Handle Ass'y

Stopper Pin (B)

General Assembly

Base Ass'y Liner (A) x 3 Gear (A)

[C 12LDH]

Gear (B)

[C 12LDH]

Encoder

[C 12LDH]

Shaft (B) Liner (B) Monitor

[C 12LDH]

Armature Ass'y Ball Bearing

(6201VV)

Ball Bearing

(6000VV) Belt Pulley (A)

Gear Case

Spindle Ass'y Ball Bearing

(6904DD)

Ball Bearing

(608VV)

Bearing Holder

(A)

Spindle Gear

Set

Dust Guide

Ass'y Clamp Lever Vise Ass'y Sub Fence (C) Table Insert (A) Table Insert (B) Hinge Cover Cord Cover (A) Scale Plate

Ass'y Rack Hinge Plate Left-hand Bolt

D10

Turn Table

Ass'y

Hinge

Ass'y

Gear Case

Cover Ass'y

Laser Holder

Ass'y

Switching

Power Supply

Switch (A)

[C 12LDH] Switch (B) Switch Switch Handle

Ass'y Cord Cord Armor Bearing Holder

(B) Pinion Ass'y Ball Bearing

(608VV)

Fence (B) Fence (A) Shaft (C) Spring (A) Sub Fence (A)

Ass'y

Sub Fence (B)

Ass'y Ring Gear Knob (A) Pinion (A) Shaft (D)

C 12FDH

Housing Ass'y Stator Ass'y Housing Cover

ELECTRIC TOOL PARTS LIST

LIST NO. E943

COMPOUND MITER SAW Model C 12LDH

2005 • 10 •5

(E1)

Hitachi Power Tools

--- 2 --- 10 -- 05

C 12LDH

109

110

108

105

104

106

107

101 102 103

111

112

113

114

123

124

125

115

116

119

118

120

134

135

136

137

138

139

140

141

142

143

144

146

147

148

149

151

152

153

154

155

156

157

150

158 159 160

162

161

173

174

175 176

126

127

128

126

129

130

131

145

132

133

163

164

165

167

168

169

170

153

171

142

143

144

172

151

117

121

177

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

607

611

618

619

621

622

623

624

625

626

627

628

629

601

621

--- 3 ---10 -- 05

C 12LDH

501 502

503

201

202

203

205

206

207

208

209

210

212

202

205

206

207

214

215

216

217

218

221

222

219

220

223

224

225

226

212

228

229

230

231

232

233

234

235

236

237

238

239

241

242

240

243

244

245

247

246

265

260

261

248

249

250

251

252

253

254

255

257

256

258

259

262

263

264

262

266

267

265

270

271

272

273

274

202

279

280

281

206

282

283

284

285

286

287

202

288

289

288

290

291

292

293

294

295

296

297

298

300

301

302

304

299

213

214

247

204

303

305

ALTERNATIVE PARTS--- 4 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

PARTS

10 -- 05

C 12LDH

1 323-141 SPRING (B) 1 2 323-137 LASER HOLDER (A) 1 3 949-531 SPLIT PIN D2X12 (10 PCS.) 1 4 323-138 LASER HOLDER (B) 1 5 949-900 ROLL PIN D3X14 (10 PCS.) 1 6 323-142 SPRING (C) 2 7 962-782 HEX. SOCKET SET SCREW M5X6 1 8 323-144 SPECIAL BOLT M5 1 9 975-144 CABLE TIE 1 10 323-139 LASER BASE ASS’Y 1 INCLUD. 11 11 CAUTION LABEL (A) 1 12 323-143 WASHER 2 13 323-140 SPRING (A) 1 14 324-711 LASER MODULE (A) 1 15 990-541 MACHINE SCREW (W/WASHERS) M5X16 3 16 324-971 RACK 1 17 935-196

MACHINE SCREW (W/WASHERS) M4X12 (BLACK)

3 18 973-313 NYLON CLIP 1 19 323-208

MACHINE SCREW (W/WASHERS) M6X20 (BLACK)

1 20 322-935 CLAMP LEVER 1 21 325-032 BOLT (LEFT HAND) M10 1 22 325-033 KNOB (A) 1 23 325-035 PLANET GEAR 3 24 325-036 PINION (A) 1 25 325-034 RING GEAR 1 26 325-037 PLATE (H) 2 27 307-811

TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 2

28 962-553 RETAINING RING FOR D28 SHAFT 1 29 949-241 MACHINE SCREW M5X20 (10 PCS.) 1 30 949-432 BOLT WASHER M6 (10 PCS.) 1 31 323-142 SPRING (C) 2 32 305-592 NEEDLE D5X19.8 1 33 323-619 ENCODER 1 34 939-542

RETAINING RING FOR D12 SHAFT (10 PCS.)

1 35 325-030 SHAFT (D) 1 36 322-934 WASHER M16 1 37 949-216 MACHINE SCREW M4X10 (10 PCS.) 4 38 324-972 HINGE COVER 1 39 323-684 LINER (D) 2 40 307-956

SEAL LOCK HEX. SOCKET SET SCREW M6X10 1

41 323-594 SLEEVE 1 42 323-595 SPRING (A) 1 43 325-027 HINGE ASS’Y 1 INCLUD. 32 44 949-660 HEX. SOCKET HD. BOLT M6X20 (10 PCS.) 2 45 984-528 O-RING (P-6) 1 46 302-518 STOPPER PIN ASS’Y 1 INCLUD. 45 47 996-407 O-RING (1AP-12) 1 48 325-028 SET PIN 1 49 324-973 DUST GUIDE ASS’Y 1 INCLUD. 58, 59 50 990-541 MACHINE SCREW (W/WASHERS) M5X16 2 51 323-593 SHAFT (C) 1

ALTERNATIVE PARTS --- 5 ---

ITEM

NO.

CODE NO.

DESCRIPTION

REMARKS

NO.

USED

PARTS

10 -- 05

C 12LDH

52 325-029 BEVEL PLATE 1 53 949-432 BOLT WASHER M6 (10 PCS.) 1 54 303-006 SPACER D4X10 1 55 323-142 SPRING (C) 1 56 949-423 WASHER M4 (10 PCS.) 1 57 949-221 MACHINE SCREW M4X20 (10 PCS.) 1 58 322-963 DUST GUIDE HOLDER 1 59 949-214 MACHINE SCREW M4X6 (10 PCS.) 1 60 324-968 SCALE PLATE ASS’Y 1 INCLUD. 61, 62 61 324-969 SCALE (B) 1 62 324-970 SCALE (C) 1 63 993-539 MACHINE SCREW (W/WASHERS) M4X16 2 65 324-978 LINER (B) 1 66 949-216 MACHINE SCREW M4X10 (10 PCS.) 2 67 949-423 WASHER M4 (10 PCS.) 2 68 324-977 GEAR (B) 1 69 325-019 NYLOCK HEX. SOCKET HD. BOLT M8X20 3 70 324-974 INDICATOR (B) 2 71 304-043

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

2 72 680-418 NYLON NUT M12 1 73 949-821 HEX. SOCKET HD. BOLT M5X16 (10 PCS.) 1 74 949-454 SPRING WASHER M5 (10 PCS.) 2 75 325-031 HINGE PLATE 1 76 323-627 SPRING PLATE 1 77 949-457 SPRING WASHER M8 (10 PCS.) 2 78 949-655 HEX. SOCKET HD. BOLT M8X16 (10 PCS.) 2 79 323-609 SPACER (A) 1 80 307-635

MACHINE SCREW (W/SP. WASHER) M4X10

2 81 324-987 PLATE CAP 1 82 323-680 SIDE HANDLE 1 83 323-646 LASER HOLDER ASS’Y 1 INCLUD. 1-10, 12-14 101 325-046 TABLE INSERT (A) 1 102 323-649 TABLE INSERT (B) 1 103 990-541 MACHINE SCREW (W/WASHERS) M5X16 4 104 975-348 NYLON NUT M8 1 105 318-929 WASHER (F) 1 106 304-043

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

1 107 318-927 INDICATOR (A) 1 108 324-976 TURN TABLE ASS’Y 1 INCLUD. 128 109 993-539 MACHINE SCREW (W/WASHERS) M4X16 1 110 325-021 CORD COVER (A) 1 111 993-539 MACHINE SCREW (W/WASHERS) M4X16 1 112 324-986 CORD (A) 100MM 1 113 324-984 PACKING (E) 1 114 324-983 CORD (D) 1 115 323-616 PANEL SHEET (A) 1 116 323-615 INDICATION PANEL ASS’Y 1 INCLUD. 115 117 323-608 PACKING (D) 1 118 324-979 MONITOR ASS’Y 1 INCLUD. 114, 124, 125 119 993-539 MACHINE SCREW (W/WASHERS) M4X16 4 120 324-985 INSULATING CASE 1

ALTERNATIVE PARTS--- 6 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

PARTS

10 -- 05

C 12LDH

121 980-523 NYLON CLIP 1 123 325-026 CORD (A) 310MM 1 124 324-981 CORD (C) 300MM 1 125 324-982 CORD (C) 330MM 1 126 323-142 SPRING (C) 2 127 323-619 ENCODER 1 128 305-592 NEEDLE D5X19.8 1 129 949-432 BOLT WASHER M6 (10 PCS.) 1 130 949-241 MACHINE SCREW M5X20 (10 PCS.) 1 131 323-622 PACKING (B) 1 132 323-623 DUST COVER 1 133 949-215 MACHINE SCREW M4X8 (10 PCS.) 1 134 323-677 VISE ASS’Y 1 INCLUD. 135-141 135 323-678 KNOB BOLT 1 136 301-806 WING BOLT M6X15 1 137 SCREW HOLDER 1 138 949-432 BOLT WASHER M6 (10 PCS.) 1 139 302-532 VISE PLATE 1 140 949-216 MACHINE SCREW M4X10 (10 PCS.) 1 141 322-954 VISE SHAFT 1 142 949-678 BOLT M8X35 (10 PCS.) 4 143 949-457 SPRING WASHER M8 (10 PCS.) 4 144 949-433 BOLT WASHER M8 (10 PCS.) 4 145 301-806 WING BOLT M6X15 1 146 324-995 KNOB (B) 1 147 323-142 SPRING (C) 1 148 324-993 SUB FENCE (C) ASS’Y 1 INCLUD. 149 149 WARNING LABEL (O) 1 150 325-049 FENCE (B) 1 151 949-342 FLAT HD. SCREW M6X25 (10 PCS.) 2 152 949-795 FLAT HD. SCREW M6X35 (10 PCS.) 1 153 963-837 NYLON NUT M6 2 154 324-994 PLATE (D) 35MM 1 155 325-271 SUB FENCE (B) ASS’Y 1 INCLUD. 156 156 WARNING LABEL (L) 1 157 323-625 LINER (A) 3 158 302-317 MACHINE SCREW M5X16 (BLACK) 2 159 949-431 BOLT WASHER M5 (10 PCS.) 2 160 324-975 GEAR (A) 1 161 323-603 PACKING (A) 1 162 322-910 HOLDER 1 163 949-610 BOLT M6X10 (10 PCS.) 1 164 987-512

MACHINE SCREW (W/SP. WASHER) M5X16

1 165 323-605 HOOK 1 167 325-264 BASE ASS’Y 1 INCLUD. 173-176 168 323-626 SHAFT (B) 1 169 325-270 SUB FENCE (A) ASS’Y 1 INCLUD. 170 170 WARNING LABEL (M) 1 171 324-990 PLATE (D) 24.5MM 1 172 324-988 FENCE (A) 1 173 949-510 RIVET D2.5X4.8 (10 PCS.) 2

ALTERNATIVE PARTS --- 7 ---

ITEM

NO.

CODE NO.

DESCRIPTION

REMARKS

NO.

USED

PARTS

10 -- 05

C 12LDH

174 WARNING LABEL (A) 1 175 CAUTION LABEL (C) 1 176 323-656 SCALE (A) 1 177 949-432 BOLT WASHER M6 (10 PCS.) 1 201 325-048 CORD 1 202 990-541 MACHINE SCREW (W/WASHERS) M5X16 7 203 325-013 HANDLE ASS’Y 1 INCLUD. 215 204 325-022 CORD COVER (B) 1 205 949-828 HEX. SOCKET HD. BOLT M5X70 (10 PCS.) 4 206 949-454 SPRING WASHER M5 (10 PCS.) 6 207 949-431 BOLT WASHER M5 (10 PCS.) 4 208 940-778 CORD ARMOR D10.7 1 209 937-631 CORD CLIP 1 210 984-750 TAPPING SCREW (W/FLANGE) D4X16 2 212 307-811

TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 5

213 307-811

TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 1

214 959-141 CONNECTOR 50092 (10 PCS.) 4 215 325-014 SWITCH LABEL (A) 1 216 323-634 SWITCH (A) (1P TYPE) 1 217 323-635 SWITCH (B) (1P TYPE) 1 218 324-999 CORD (B) 1 219 984-750 TAPPING SCREW (W/FLANGE) D4X16 1 220 322-911 SWITCHING POWER SUPPLY 1 221 301-653

TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 3

222 325-043 SWITCH HANDLE (A).(B) SET 1 223 325-261 INTERNAL WIRE (A) (BLUE) 1 224 325-262 INTERNAL WIRE (A) (YELLOW) 1 225 325-263 INTERNAL WIRE (A) (BLACK) 1 226 324-998 SWITCH (3P FASTON TYPE) W/O LOCK 1 228 325-002 HOUSING COVER 1 229 322-123

MACHINE SCREW (W/WASHERS) M5X40 (BLACK)

4 230 325-000 VINYL TUBE 1 231 937-623 BRUSH TERMINAL 2 232 340-648D STA T OR ASS’Y 120V 1 INCLUD. 231 233 953-174 HEX. HD. TAPPING SCREW D5X55 2 234 325-045 HOUSING ASS’Y 1 INCLUD. 235, 236 235 938-477 HEX. SOCKET SET SCREW M5X8 2 236 938-241 BRUSH HOLDER 1 237 999-038 CARBON BRUSH (1 PAIR) 2 238 945-161 BRUSH CAP 2 239 322-915 FAN GUIDE 1 240 360-743U ARMATURE ASS’Y 120V 1 INCLUD. 241-244 241 600-0VV BALL BEARING 6000VVCMPS2L 1 242 302-428 WASHER (A) 1 243 325-003 DUST WASHER (B) 1 244 620-1VV BALL BEARING 6201VVCMPS2L 1 245 949-755 HEX. SOCKET HD. BOLT M6X16 (10 PCS.) 1 246 325-004 GEAR CASE 1 247 980-523 NYLON CLIP 2 248 988-101 BOLT (A) M10 1 249 323-652 WASHER (B) 1

ALTERNATIVE PARTS--- 8 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

PARTS

10 -- 05

C 12LDH

250

TCT SAW BLADE 305MM-D25.4 HOLE-NT32

1 251 325-023 WASHER (A) 1 252 325-005 SPINDLE ASS’Y 1 INCLUD. 253-255, 257-259 253 318-363 FLAT HD. SCREW M4X10 (BLACK) 2 254 325-008 BEARING COVER (A) 1 255 690-4DD BALL BEARING 6904DDPS2L 1 256 323-208

MACHINE SCREW (W/WASHERS) M6X20 (BLACK)

2 257 325-007 BEARING HOLDER (A) 1 258 325-006 SPINDLE AND GEAR SET 1 259 608-VVM BALL BEARING 608VVC2PS2L 1 260 322-926 LASER COVER (A) 1 261 949-216 MACHINE SCREW M4X10 (10 PCS.) 1 262 949-236 MACHINE SCREW M5X10 (10 PCS.) 2 263 949-431 BOLT WASHER M5 (10 PCS.) 1 264 323-675 SPINDLE COVER 1 265 993-539 MACHINE SCREW (W/WASHERS) M4X16 2 266 325-047 GEAR CASE COVER ASS’Y 1 INCLUD. 267 267 323-654 CAUTION LABEL (B) 1 270 324-443 PULLEY (A) 1 271 961-157 SUPER LOCK WASHER 1 272 949-560 NUT M10 (10 PCS.) 1 273 324-427 BELT (200H10) 16X508 1 274 325-009 PINION ASS’Y 1 INCLUD. 279 279 608-VVM BALL BEARING 608VVC2PS2L 1 280 983-545 NEEDLE ROLLER 2 281 325-259 BEARING HOLDER (B) 1 282 949-241 MACHINE SCREW M5X20 (10 PCS.) 2 283 325-018 SPRING 1 284 325-017 STOPPER PIN (B) 1 285 304-043

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

1 286 325-016 PULLEY COVER 1 287 NAME PLATE 1 288 322-948 WASHER M7 2 289 325-041 LINK 1 290 322-950 SPECIAL SCREW M6 1 291 322-947 SPECIAL SCREW (C) M5 1 292 322-938 WASHER M10 2 293 318-363 FLAT HD. SCREW M4X10 (BLACK) 1 294 325-039 PROTECTIVE COVER (B) 1 295 323-672 COVER PLATE (B) ASS’Y 1 INCLUD. 296 296 323-673 CUSHION 1 297 323-667 PROTECTIVE COVER (A) 1 298 323-671 RETURN SPRING 1 299 949-236 MACHINE SCREW M5X10 (10 PCS.) 2 300 325-040 COVER PLATE (A) 1 301 323-670 COVER WASHER 1 302 949-454 SPRING WASHER M5 (10 PCS.) 1 303 949-236 MACHINE SCREW M5X10 (10 PCS.) 1 304 949-215 MACHINE SCREW M4X8 (10 PCS.) 3 305 325-038 FLAT HD. SCREW M5X10 (BLACK) 1

OPTIONAL ACCESSORIES

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

ALTERNATIVE PARTS --- 9 ---10 -- 05

STANDARD ACCESSORIES

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

C 12LDH

501 944-458 HEX. BAR WRENCH 4MM 1 502 985-051 BOX WRENCH 17MM 1 503 322-955 DUST BAG (BLACK) 1

601 323-546 CROWN MOLDING STOPPER (L) ASS’Y 1 INCLUD. 602-605 602 301-806 WING BOLT M6X15 1 603 CROWN MOLDING STOPPER (L) 1 604 321-390 CROWN MOLDING STOPPER HOLDER 1 605 323-682 WING BOLT M6X85 1 606 323-547 CROWN MOLDING STOPPER (R) ASS’Y 1 INCLUD. 607-610 607 323-682 WING BOLT M6X85 2 608 321-390 CROWN MOLDING STOPPER HOLDER 1 609 CROWN MOLDING STOPPER (R) 1 610 301-806 WING BOLT M6X15 1 611 323-657 HOLDER ASS’Y 1 INCLUD. 612-617 612 321-549 HOLDER 1 613 949-313 WING NUT M6 (10 PCS.) 1 614 949-556 NUT M6 (10 PCS.) 1 615 322-047 VISE PLATE 1 616 949-425 WASHER M6 (10 PCS.) 1 617 323-681 HIGH TENSION BOLT M6X105 1 618 974-561 STOPPER 1 619 949-404 WING BOLT M6X20 (10 PCS.) 1 620 323-523 GUIDE ASS’Y 1 INCLUD. 607, 611, 618, 619 621 322-957 VISE (B) ASS’Y 1 INCLUD. 622-628 622 321-551 KNOB BOLT M10X54 1 623 998-836 KNOB BOLT M6X11 1 624 SCREW HOLDER (B) 1 625 306-985 WASHER (H) 1 626 964-851 BASE RUBBER 1 627 304-043

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

1 628 318-967 VISE SHAFT 1 629 323-545 CROWN MOLDING VISE ASS’Y 1 INCLUD. 601, 621 630 323-522

TCT SAW BLADE 305MM-D25.4 HOLE-NT32

1 631 305-546

TCT SAW BLADE 305MM-D25.4 HOLE-NT60

1 632 309-418

TCT SAW BLADE 305MM-D25.4 HOLE-NT80

1 633 301-721

TCT SAW BLADE 305MM-D25.4 HOLE-NT90

1 634 310-875

TCT SAW BLADE 305MM-D25.4 HOLE-NT96

--- 1 0 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

10 -- 05

C 12LDH

Printed in Japan (051005N)

ELECTRIC TOOL PARTS LIST

LIST NO. E944

COMPOUND MITER SAW Model C 12FDH

2005 • 10 •5

(E1)

Hitachi Power Tools

--- 2 --- 10 -- 05

C 12FDH

109

110

108

105

104

106

107

101 102 103

113

114

115

116

117

118

119

120

121

122

123

125

126

127

128

130

131

132

133

134

135

136

129

138

137

148

149

150

151

124

139

140

142

143

144

145

132

146

121

122

123

147

130

111

112

152

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618 619

620

607

611

618

619

621

622

623

624

625

626

627

628

629

601

621

--- 3 ---10 -- 05

C 12FDH

229

230

265

266

239

238

241

242

240

501 502

503

201

202

203

205

206

207

208

209

210

212

202

205

206

207

214

215

216

219

220

217

218

221

222

223

224

212

226

227

228

231

232

233

234

235

236

237

243

244

264

259

247

248

249

250

251

252

253

254

256

255

257

258

261

262

263

261

267

264

269

270

271

272

273

202

278

279

280

206

282

283

284

285

286

202

287

288

287

289

290

291

292

293

294

295

296

297

299

300

301

303

298

213

214

204

302

304

245

246

268

281

260

ALTERNATIVE PARTS--- 4 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

PARTS

10 -- 05

C 12FDH

MACHINE SCREW (W/WASHERS) M6X20 (BLACK)

1 18 322-935 CLAMP LEVER 1 19 325-032 BOLT (LEFT HAND) M10 1 20 325-033 KNOB (A) 1 21 325-035 PLANET GEAR 3 22 325-036 PINION (A) 1 23 325-034 RING GEAR 1 24 325-037 PLATE (H) 2 25 307-811

TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 2

26 962-553 RETAINING RING FOR D28 SHAFT 1 27 939-542

RETAINING RING FOR D12 SHAFT (10 PCS.)

1 28 325-030 SHAFT (D) 1 29 322-934 WASHER M16 1 30 323-684 LINER (D) 2 31 307-956

SEAL LOCK HEX. SOCKET SET SCREW M6X10

1 32 323-594 SLEEVE 1 33 323-595 SPRING (A) 1 34 325-279 HINGE 1 35 949-660 HEX. SOCKET HD. BOLT M6X20 (10 PCS.) 2 36 984-528 O-RING (P-6) 1 37 302-518 STOPPER PIN ASS’Y 1 INCLUD. 36 38 996-407 O-RING (1AP-12) 1 39 325-028 SET PIN 1 40 324-973 DUST GUIDE ASS’Y 1 INCLUD. 49, 50 41 990-541 MACHINE SCREW (W/WASHERS) M5X16 2 42 323-593 SHAFT (C) 1 43 325-029 BEVEL PLATE 1 44 949-432 BOLT WASHER M6 (10 PCS.) 1 45 303-006 SPACER D4X10 1 46 323-142 SPRING (C) 1 47 949-423 WASHER M4 (10 PCS.) 1 48 949-221 MACHINE SCREW M4X20 (10 PCS.) 1 49 322-963 DUST GUIDE HOLDER 1 50 949-214 MACHINE SCREW M4X6 (10 PCS.) 1 51 324-960 SCALE PLATE ASS’Y 1 INCLUD. 52, 53

ALTERNATIVE PARTS --- 5 ---

ITEM

NO.

CODE NO.

DESCRIPTION

REMARKS

NO.

USED

PARTS

10 -- 05

C 12FDH

52 324-961 SCALE (D) 1 53 324-962 SCALE (E) 1 54 993-539 MACHINE SCREW (W/WASHERS) M4X16 2 56 324-978 LINER (B) 1 59 325-019 NYLOCK HEX. SOCKET HD. BOLT M8X20 3 60 324-974 INDICATOR (B) 2 61 304-043

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

2 62 680-418 NYLON NUT M12 1 63 949-821 HEX. SOCKET HD. BOLT M5X16 (10 PCS.) 1 64 949-454 SPRING WASHER M5 (10 PCS.) 2 65 325-031 HINGE PLATE 1 66 323-627 SPRING PLATE 1 67 949-457 SPRING WASHER M8 (10 PCS.) 2 68 949-655 HEX. SOCKET HD. BOLT M8X16 (10 PCS.) 2 69 323-609 SPACER (A) 1 70 307-635

MACHINE SCREW (W/SP. WASHER) M4X10

2 71 324-987 PLATE CAP 1 72 323-680 SIDE HANDLE 1 73 323-646 LASER HOLDER ASS’Y 1 INCLUD. 1-10, 12-14 101 325-046 TABLE INSERT (A) 1 102 323-649 TABLE INSERT (B) 1 103 990-541 MACHINE SCREW (W/WASHERS) M5X16 4 104 975-348 NYLON NUT M8 1 105 318-929 WASHER (F) 1 106 304-043

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

1 107 318-927 INDICATOR (A) 1 108 325-277 TURN TABLE 1 109 993-539 MACHINE SCREW (W/WASHERS) M4X16 1 110 325-021 CORD COVER (A) 1 111 323-693 MONITOR CASE (B) 1 112 993-539 MACHINE SCREW (W/WASHERS) M4X16 4 113 323-677 VISE ASS’Y 1 INCLUD. 114-120 114 323-678 KNOB BOLT 1 115 301-806 WING BOLT M6X15 1 116 SCREW HOLDER 1 117 949-432 BOLT WASHER M6 (10 PCS.) 1 118 302-532 VISE PLATE 1 119 949-216 MACHINE SCREW M4X10 (10 PCS.) 1 120 322-954 VISE SHAFT 1 121 949-678 BOLT M8X35 (10 PCS.) 4 122 949-457 SPRING WASHER M8 (10 PCS.) 4 123 949-433 BOLT WASHER M8 (10 PCS.) 4 124 301-806 WING BOLT M6X15 1 125 324-995 KNOB (B) 1 126 323-142 SPRING (C) 1 127 324-993 SUB FENCE (C) ASS’Y 1 INCLUD. 128 128 WARNING LABEL (O) 1 129 325-049 FENCE (B) 1 130 949-342 FLAT HD. SCREW M6X25 (10 PCS.) 2 131 949-795 FLAT HD. SCREW M6X35 (10 PCS.) 1 132 311-144 NYLON NUT M6 2

ALTERNATIVE PARTS--- 6 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

PARTS

10 -- 05

C 12FDH

133 324-994 PLATE (D) 35MM 1 134 325-271 SUB FENCE (B) ASS’Y 1 INCLUD. 135 135 WARNING LABEL (L) 1 136 323-625 LINER (A) 3 137 322-910 HOLDER 1 138 949-610 BOLT M6X10 (10 PCS.) 1 139 987-512

MACHINE SCREW (W/SP. WASHER) M5X16

1 140 323-605 HOOK 1 142 324-965 BASE ASS’Y 1 INCLUD. 148-151 143 323-626 SHAFT (B) 1 144 325-270 SUB FENCE (A) ASS’Y 1 INCLUD. 145 145 WARNING LABEL (M) 1 146 324-990 PLATE (D) 24.5MM 1 147 324-988 FENCE (A) 1 148 949-510 RIVET D2.5X4.8 (10 PCS.) 2 149 WARNING LABEL (A) 1 150 CAUTION LABEL (C) 1 151 323-692 SCALE (A) 1 152 949-432 BOLT WASHER M6 (10 PCS.) 1 201 325-048 CORD 1 (CORD ARMOR D10.7) 202 990-541 MACHINE SCREW (W/WASHERS) M5X16 7 203 324-964 HANDLE ASS’Y 1 INCLUD. 215 204 325-022 CORD COVER (B) 1 205 949-828 HEX. SOCKET HD. BOLT M5X70 (10 PCS.) 4 206 949-431 BOLT WASHER M5 (10 PCS.) 4 207 949-454 SPRING WASHER M5 (10 PCS.) 6 208 940-778 CORD ARMOR D10.7 1 209 937-631 CORD CLIP 1 210 984-750 TAPPING SCREW (W/FLANGE) D4X16 2 212 307-811

TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 5

213 307-811

TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 1

214 959-141 CONNECTOR 50092 (10 PCS.) 4 215 324-966 SWITCH LABEL (B) 1 216 323-634 SWITCH (A) (1P TYPE) 1 217 984-750 TAPPING SCREW (W/FLANGE) D4X16 1 218 325-280 SWITCHING POWER SUPPLY 1 219 301-653

TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 3

220 325-043 SWITCH HANDLE (A).(B) SET 1 221 325-261 INTERNAL WIRE (A) (BLUE) 1 222 325-262 INTERNAL WIRE (A) (YELLOW) 1 223 325-263 INTERNAL WIRE (A) (BLACK) 1 224 324-998 SWITCH (3P FASTON TYPE) W/O LOCK 1 226 325-002 HOUSING COVER 1 227 322-123

MACHINE SCREW (W/WASHERS) M5X40 (BLACK)

4 228 325-000 VINYL TUBE 1 229 937-623 BRUSH TERMINAL 2 230 340-648D STATOR ASS’Y 120V 1 INCLUD. 229 231 953-174 HEX. HD. TAPPING SCREW D5X55 2 232 325-045 HOUSING ASS’Y 1 INCLUD. 233, 234 233 938-477 HEX. SOCKET SET SCREW M5X8 2 234 938-241 BRUSH HOLDER 1

ALTERNATIVE PARTS --- 7 ---

ITEM

NO.

CODE NO.

DESCRIPTION

REMARKS

NO.

USED

PARTS

10 -- 05

C 12FDH

235 999-038 CARBON BRUSH (1 PAIR) 1 236 945-161 BRUSH CAP 1 237 322-915 FAN GUIDE 1 238 360-743U ARMATURE ASS’Y 120V 1 INCLUD. 239-242 239 600-0VV BALL BEARING 6000VVCMPS2L 1 240 302-428 WASHER (A) 1 241 325-003 DUST WASHER (B) 1 242 620-1VV BALL BEARING 6201VVCMPS2L 1 243 949-755 HEX. SOCKET HD. BOLT M6X16 (10 PCS.) 1 244 325-004 GEAR CASE 1 245 980-523 NYLON CLIP 2 246 935-196

MACHINE SCREW (W/WASHERS) M4X12 (BLACK)

2 247 988-101 BOLT (A) M10 1 248 323-652 WASHER (B) 1 249

TCT SAW BLADE 305MM-D25.4 HOLE-NT32

1 250 325-023 WASHER (A) 1 251 325-005 SPINDLE ASS’Y 1 INCLUD. 252-254, 256-258 252 318-363 FLAT HD. SCREW M4X10 (BLACK) 2 253 325-008 BEARING COVER (A) 1 254 690-4DD BALL BEARING 6904DDPS2L 1 255 323-208

MACHINE SCREW (W/WASHERS) M6X20 (BLACK)

2 256 325-007 BEARING HOLDER (A) 1 257 325-006 SPINDLE AND GEAR SET 1 258 608-VVM BALL BEARING 608VVC2PS2L 1 259 322-926 LASER COVER (A) 1 260 949-216 MACHINE SCREW M4X10 (10 PCS.) 1 261 323-040 MACHINE SCREW M5X10 (BLACK) 2 262 949-431 BOLT WASHER M5 (10 PCS.) 1 263 323-675 SPINDLE COVER 1 264 993-539 MACHINE SCREW (W/WASHERS) M4X16 2 265 325-047 GEAR CASE COVER ASS’Y 1 INCLUD. 266 266 323-654 CAUTION LABEL (B) 1 269 324-443 PULLEY (A) 1 270 961-157 SUPER LOCK WASHER 1 271 949-560 NUT M10 (10 PCS.) 1 272 324-427 BELT (200H10) 16X508 1 273 325-009 PINION ASS’Y 1 INCLUD. 278 278 608-VVM BALL BEARING 608VVC2PS2L 1 279 983-545 NEEDLE ROLLER 2 280 325-259 BEARING HOLDER (B) 1 281 949-241 MACHINE SCREW M5X20 (10 PCS.) 2 282 325-018 SPRING 1 283 325-017 STOPPER PIN (B) 1 284 304-043

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

1 285 325-016 PULLEY COVER 1 286 NAME PLATE 1 287 322-948 WASHER M7 2 288 325-041 LINK 1 289 322-950 SPECIAL SCREW M6 1 290 322-947 SPECIAL SCREW (C) M5 1 291 322-938 WASHER M10 2

ALTERNATIVE PARTS--- 8 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

PARTS

10 -- 05

C 12FDH

292 318-363 FLAT HD. SCREW M4X10 (BLACK) 1 293 324-967 PROTECTIVE COVER (B) 1 294 323-672 COVER PLATE (B) ASS’Y 1 INCLUD. 295 295 323-673 CUSHION 1 296 323-667 PROTECTIVE COVER (A) 1 297 323-671 RETURN SPRING 1 298 323-040 MACHINE SCREW M5X10 (BLACK) 2 299 325-040 COVER PLATE (A) 1 300 323-670 COVER WASHER 1 301 949-454 SPRING WASHER M5 (10 PCS.) 1 302 949-236 MACHINE SCREW M5X10 (10 PCS.) 1 303 949-215 MACHINE SCREW M4X8 (10 PCS.) 3 304 325-038 FLAT HD. SCREW M5X10 (BLACK) 1

OPTIONAL ACCESSORIES

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

ALTERNATIVE PARTS --- 9 ---10 -- 05

STANDARD ACCESSORIES

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

C 12FDH

501 944-458 HEX. BAR WRENCH 4MM 1 502 985-051 BOX WRENCH 17MM 1 503 322-955 DUST BAG (BLACK) 1

MACHINE SCREW (W/WASHERS) M4X10 (BLACK)

628 318-967 VISE SHAFT 1 629 323-545 CROWN MOLDING VISE ASS’Y 1 INCLUD. 601, 621 630 323-522

TCT SAW BLADE 305MM-D25.4 HOLE-NT32

631 305-546

TCT SAW BLADE 305MM-D25.4 HOLE-NT60

632 309-418

TCT SAW BLADE 305MM-D25.4 HOLE-NT80

633 301-721

TCT SAW BLADE 305MM-D25.4 HOLE-NT90

634 310-875

TCT SAW BLADE 305MM-D25.4 HOLE-NT96

--- 1 0 ---

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

NO.

USED

10 -- 05

C 12FDH

Printed in Japan (051005N)

Hitachi C 12LDH, C 12FDH Technical Data And Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual