Hitachi C 6SF, C 7SF, C 6MF, C 7MF Technical Data And Service Manual
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
C
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. APPLICA TIONS................................................................................................................................. 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. APPLICA TIONS
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.
(c) Hold a piece of wood to the rear of the base and put a mark on the piece of wood at the side of the base
(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
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1
Box wrench
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1
Parallel guide
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1
Hex. bar wrench
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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
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
mm
--- 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: A gear, 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].
(c) Remove the Ball Bearing 6000VVCMPS2L [26] and Ball Bearing 608VVC2PS2L [20] with a bearing puller.
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].
(c) Lightly tap the end surface of the Housing Ass'y [17] with a wooden hammer to remove the Stator Ass'y
[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].
(c) Loosen Adjusting Screw (A) [53] and remove it from the Gear Cover Ass'y [29]. Then the Base Ass'y [52]
can be removed.
[44]
Fig. 7
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