Hitachi C 6SF Manuale

TECHNICAL DATA

AND

SERVICE MANUAL

CIRCULAR SAWS

C 6SF, C 7SF

C 6MF, C 7MF

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

LIST Nos. C 6SF: 0597 C 6MF: 0599

C 7SF: 0598 C 7MF: E501 Feb. 2004

MODELS

C 6SF, C 6MF

C 7SF, C 7MF

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

C --- 1 MAKITA 5606B

C 6SF, C 6MF

Symbol Utilized Competitor

Company Name Model Name

C --- 2 MAKITA 5806B

C 7SF, C 7MF

Page

CONTENTS

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

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

3. APPLICATIONS................................................................................................................................. 1

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

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

5. SPECIFICATIONS ............................................................................................................................. 3

6. COMPARISONS WITH SIMILAR PRODUCTS ................................................................................. 4

7. PRECAUTIONS IN SALES PROMOTION ........................................................................................ 4

7-1. Handling Instructions ..........................................................................................................................4

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY ............................................................... 5

8-1. Disassembly .......................................................................................................................................5

8-2. Reassembly ........................................................................................................................................8

8-3. Insulation Tests .................................................................................................................................11

8-4. Deflection of Saw Blade....................................................................................................................11

8-5. Cleaning the Case ............................................................................................................................11

9. STANDARD REPAIR TIME (UNIT) SCHEDULES .......................................................................... 12

Assembly Diagram for C 6SF

Assembly Diagram for C 6MF

Assembly Diagram for C 7SF

Assembly Diagram for C 7MF

--- 1 ---

1. PRODUCT NAME

Hitachi Circular Saw, Model C 6SF [165 mm (6-1/2") ]

Hitachi Circular Saw, Model C 6MF [165 mm (6-1/2") ]

Hitachi Circular Saw, Model C 7SF [190 mm (7-1/2")]

Hitachi Circular Saw, Model C 7MF [190 mm (7-1/2")]

2. MARKETING OBJECTIVE

Circular saw market in the South-East Asian countries are mainly demanding the heavy-duty machines for

professionals. However, potential demands for reasonably priced and light-duty machines are seemed to be

strong. We will expand selling the circular saws with reasonable price and high performance for South-East Asian

countries to find a new market. The key features are as follows:

(1) Provided with parallel adjustment system

(2) Adopting lower guard made of plastic not to hurt the material to be cut

(3) Adopting base made of aluminum which is strong and precise (only Models C 6MF and C 7MF)

3. APPLICATIONS

Cutting of various wood materials

Cutting of decorated laminate plates, thin plastic plates, soft construction materials (using the saw blade for

plastic)

4. SELLING POINTS

Accurate and sturdy

aluminum die-cast base

(Models C 6MF/C 7MF)

Resin protective cover minimizes

scratches on workpieces. C 7MF

40T TCT saw blade

(C 6SF/C 6MF: 165 mm dia.)

(C 7SF/C 7MF: 190 mm dia.)

Provided wih parallel adjustment

Power-plus heavy-duty motor

(C 6SF: Input 1,010 W)

(C 6MF: Input 1,010 W)

Double-insulated construction

--- 2 ---

4-1. Selling Point Descriptions

(1) Parallel adjustment system

The parallelism can be easily fine-adjusted by using the parallel adjustment system. The parallelism may be

slightly shifted when the cutting depth is adjusted. If the parallelism is shifted, adjust it according to the

following procedure.

(a) Loosen the locking screw of the saw cover hinge (Fig. 1).

(b) Draw the protective cover in the saw cover.

(Fig. 2).

(d) Move the marked piece of wood to the front of the base and turn the parallel adjustment screw until the

mark aligns with the side of the base (Fig. 3).

(e) After adjustment, tighten the locking screw securely.

Fig. 1

(2) Resin protective cover minimizes scratches on workpieces

The lightweight and smooth protective cover is made of resin and minimizes scratching on workpieces.

(3) Power-plus heavy-duty motor (Models C 6SF/C 6MF)

Powerful motor provides greater input and output than those of the Model C 6SE.

(4) Accurate and sturdy aluminum die-cast base (Models C 6MF/C 7MF)

Thanks to the sturdy aluminum die-cast base, the Models C 6MF/C 7MF can cut workpieces accurately and

the cut surfaces of the workpieces are smooth.

(5) High performance 40-tooth tungsten carbide tipped (TCT) saw blade as standard

High performance TCT saw blade (40 teeth) is provided as standard instead of the conventional combination

blade. The Models C 6SF, C 6MF, C 7SF and C 7MF provide greater maximum cutting depth than the

conventional models by using a 165 mm dia. TCT saw blade and a 190 mm dia. TCT saw blade respectively.

(6) Double-insulated construction

Grounding is not required thanks to the double-insulated construction.

Fig. 3Fig. 2

Mark

Saw cover hinge

Saw cover

Sleeve

Locking

screw Do not loosen the screw of the sleeve. Protective

cover

Parallel

adjustment

screw

Mark

--- 3 ---

5. SPECIFICATIONS

Model

Saw blade diameter

Cutting depth at 90˚

at 45˚

Power source

Type of motor

Type of switch

Housing

Handle cover

Enclosure Gear cover

Lower guard

Base

* Voltage (V)

* Current (A)

Power input

Rotation No-load

speed Full-load

Weight Net

Gross

Packaging

Cord Type

Overall length

Standard equipment

165 mm (6-1/2") 190 mm (7-1/2")

0 --- 57 mm (0 --- 2-1/4") 0 --- 68 mm (0 --- 2-11/16")

Max. 38 mm (1-1/2") Max. 46 mm (1-13/16")

AC single phase 50/60 Hz

AC single phase commutator

Trigger switch

Polycarbonate resin

Cast aluminum

Polycarbonate resin

1,010 W 1,050 W

5,400/min 5,530/min

4,070/min 4,000/min

3.0 kg (6.6 lbs) 3.3 kg (7.3 lbs)

4.3 kg (9.5 lbs) 4.7 kg (10.4 lbs)

Corrugated cardboard box

Two-core cabtire cable

2.5 m (8.2 ft.)

* Check the tool name plate to confirm the rating, as it is subject to change by area.

C 6SF C 7MFC 6MF C 7SF

Sheet metal

220

4.8

Cast aluminum

230

4.8

Cast aluminum

230

4.6

Sheet metal

220

5.0

Tungsten carbide tipped (TCT) saw blade ••••••••••••••••••••••••••••••••••••••••••••••••• 1

Box wrench ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1

Parallel guide •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1

Hex. bar wrench •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1

--- 4 ---

HITACHI C --- 1 HITACHI C --- 2

C 6SF/C 6MF C 7SF/C 7MF

165 (6-1/2") 160 (6-1/4") 190 (7-1/2") 185 (7-1/4")

57 (2-1/4") 55 (2-5/32") 68 (2-11/16") 66 (2-19/32")

38 (1-1/2") 36 (1-3/8") 46 (1-13/16") 44 (1-23/32")

1,010 950 1,050 1,050

5,000 4,700 5,000 4,700

270/282 268 282/295 282

3.0 (6.6 lbs) 3.3 (7.3 lbs) 3.3 (7.3 lbs) 3.7 (8.2 lbs)

5,400 5,400 5,530 5,130

4,070 3,660 4,000 3,330

550 545 590 700

1,500 1,340 1,500 1,500

84 82 84 84

Provided None Provided None

Steel/Aluminum Steel Steel/Aluminum Steel

Plastic Steel Plastic Steel

270/282 268 282/295 282

229 230 242 240

210 225 210 230

Maker

Model

Saw blade diameter mm

Max. cutting 90˚

depth 45˚

Power input W

No-load rotation speed /min

Overall length mm

Weight kg

No-load rotation speed /min

Full-load rotation speed /min

Full-load output W

Max. output W

No-load noise dB

Palallel adjustment ---

Material of base ---

Material of lower guard ---

Material of wing bolt/nut ---

Lmm

Hmm

Wmm

6. COMPARISONS WITH SIMILAR PRODUCTS

Catalog specifications

Characteristics*

Structure

7. PRECAUTIONS IN SALES PROMOTION

In the interest of promoting the safest and most efficient use of the Models C 6SF, C 6MF, C 7SF and C 7MF

Circular 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 Handling Instructions.

7-1. Handling Instructions

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 electric tool 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 circular saw are listed in the Handling Instructions to enhance the safe and efficient use of the

tool by the customer. Salespersons must be thoroughly familiar with the contents of the Handling Instructions to

be able to offer appropriate guidance to the customer during sales promotion.

* Figures are based on 230 V motors

--- 5 ---

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

The procedures for disassembly and reassembly and certain precautions are described below.

The [Bold] numbers in the descriptions below correspond to the item numbers in the parts list for all the models.

In disassembly or reassembly and also in other work, the Base Ass'y [52] should be carefully handled to prevent

the loss of the accuracy of each part, such as the flatness of the bottom surface.

8-1. Disassembly

Before disassembly, be sure to remove the saw blade to prevent damage to the cutting edge or

injuries by the saw blade.

(1) Removing the Protective Cover [5]

(a) Detach the hook of the Return Spring [6] from the Protective Cover [5].

(b) Loosen the Seal Lock Flat Hd. Screw M3 x 12 [9] securing the Bearing Cover [8], and remove the

Bearing Cover [8] and the Protective Cover [5].

(2) Removing the Bearing Holder [3]

Loosen the Seal Lock Flat Hd. Screw M5 x 12 [4], remove the Bearing Holder [3] together with the Spindle

and Gear Set [2].

Fig. 4

Jig

42 to 43 mm

(3) Removing the Spindle and Gear Set [2] (See Fig. 4.)

Hold the bearing holder in a cylindrical jig with an inside

diameter of 42 mm to 43 mm (approx. 1-23/32"), and

remove it by pushing the end of the spindle.

Important: Agear, once removed, cannot be used again

because it no longer engages. It must be

replaced by a new spindle and gear set.

(4) Removing the Housing Ass'y [17]

(a) Loosen the Brush Caps [34] with a flat-blade

screwdriver and remove the Carbon Brushes [33].

(b) Loosen the Machine Screws (W/Washers) M5 x 45

(Black) [14] securing the Housing Ass'y [17], and

remove the Housing Ass'y [17] and Gear Cover Ass'y

[29].

Push

--- 6 ---

(5) Removing the Armature [24] (Fig. 5)

(a) Remove the Lock Lever [25] and tap the end surface of the Housing Ass'y [17] with a wooden hammer.

The Armature [24] and Fan Guide [23] can then be removed.

(b) Remove the Fan Guide [23], Thrust Washer [19] and Bearing Lock [18].

Fig. 5

Fig. 6

(6) Removing the Stator Ass'y [22] (Fig. 6)

(a) Loosen the two Hex. Hd. Tapping Screws D5 x 55 [40].

(b) Remove the two Brush Terminals [21] from the brush holders of the Housing Ass'y [17].

[22].

[17]

[22]

[21]

[18]

[20]

[19]

[23]

[25]

[24]

[26]

[40]

--- 7 ---

[28] [29]

[53]

[52]

[50]

(7) Removing the Base Ass'y [52] (Fig. 7)

(a) Remove the Bolt Ass'y (Square) M6 x 22 [44].

(b) Loosen the two Hex. Socket Set Screw M5 x 6 [28] of the Gear Cover Ass'y [29] and the hex. socket screw

in the Sleeve [50] to remove the Sleeve [50].

can be removed.

[44]

Fig. 7

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