C 6BU - Uncategorized HITACHI - Free user manual and instructions

Product Type	Circular Saw
Model	C 6BU
Brand	Hitachi
Voltage	230 V~
Power Input	1010 W
No-Load Speed	5000/min
Cutting Depth (90°)	54 mm
Cutting Depth (45°)	39 mm
Blade Diameter	165 mm
Weight (without cord)	3.5 kg
Max. Inclination	45°
Electric Brake	Yes
Safety Cover	Yes (retractable)
Riving Knife	Yes (adjustable)
Guide	Yes (adjustable)
Carbon Brushes	Replaceable (type 56)
Sound Pressure Level	94 dB (A)
Sound Power Level	107 dB (A)
Vibration Level	< 2.5 m/s²
Standard Accessories	Saw blade, box wrench, guide, wing-bolt
Application	Cutting various types of wood
Maintenance	Inspect and replace carbon brushes; keep blade sharp
Safety Features	Lock lever, spindle lock, anti-kickback

Frequently Asked Questions - C 6BU HITACHI

How do I adjust the cutting depth on the Hitachi C6BU?

Loosen the knob on the handle and move the base to the desired position. Retighten the knob securely. Refer to Fig. 2 in the manual.

How do I change the saw blade?

Ensure the saw is unplugged and the switch is off. Set cutting depth to maximum. Press the lock lever to lock the spindle, then remove the hexagonal bolt with the box wrench. Retract the safety cover and remove the blade. Mount the new blade with arrow direction matching the cover arrow, tighten bolt, and lock lever.

What safety precautions should I follow?

Always wear eye protection. Keep work area clean and well lit. Do not wear loose clothing. Use the riving knife. Never disable the safety cover. Ensure the blade has reached full speed before cutting. Disconnect power when changing accessories.

What is brake kickback and how do I handle it?

The electric brake causes a slight kickback when releasing the trigger. Always hold the saw firmly with both hands. If the brake becomes ineffective, replace the carbon brushes with genuine Hitachi brushes (No. 56).

How do I replace the carbon brushes?

Disconnect the saw. Use a slotted screwdriver to remove the brush caps. Take out the worn brushes and insert new ones (Hitachi No. 56). Ensure they slide freely. Reinstall caps. Brake function relies on proper brushes.

How do I adjust the riving knife?

Loosen the hexagonal-head bolt clamping the riving knife. Adjust it so it is aligned with the saw blade (see Fig. 3). The knife must be thinner than the kerf and the blade body. Retighten the bolt.

Can I use this saw for cutting materials other than wood?

The saw is intended for cutting various types of wood. Do not use for cutting metal, plastic, or masonry unless specified. Using inappropriate blades or materials may cause injury.

How do I use the guide for straight cuts?

Loosen the wing-bolt on the guide and slide it to the desired position. The guide can be mounted on either side. Align the premarked line with the front scale on the base. For 45° cuts, use the smaller scale.

What extension cord should I use?

Use a heavy-duty extension cord rated for outdoor use if working outdoors. Keep it as short as possible to prevent voltage drop. Ensure the cord is not damaged and is suitable for the power rating (1010 W).

What is the noise level of this saw?

The sound pressure level is 94 dB(A) and sound power level is 107 dB(A). Always wear ear protection when operating the saw.

USER MANUAL C 6BU HITACHI

Technical line drawing of a mechanical power saw assembly (no text or symbols)

Read through carefully and understand these instructions before use.

Bruksanvisning

Brugsanvisning

Bruksanvisning

Käyttöohjeet

Handling Instructions

1

2

3(A)

3(B)

4(A)

4(B)

5

6

VEDLIKEHOLD OG INSPEKSJON

When using electric tools, basic safety precautions should always be followed to reduce the risk of fire, electric shock and personal injury, including the following.

Read all these instructions before operating this product and save these instructions.

For safe operations:

1. Keep work area clean. Cluttered areas and benches invite injuries.
2. Consider work area environment. Do not expose power tools to rain. Do not use power tools in damp or wet locations. Keep work area well lit. Do not use power tools where there is risk to cause fire or explosion.
3. Guard against electric shock. Avoid body contact with earthed or grounded surfaces. (e.g. pipes, radiators, ranges, refrigerators).
4. Keep children away. Do not let visitors touch the tool or extension cord. All visitors should be kept away from work area.
5. Store idle tools. When not in use, tools should be stored in a dry, high or locked up place, out of reach of children.
6. Do not force the tool. It will do the job better and safer at the rate for which it was intended.
7. Use the right tool. Do not force small tools or attachments to do the job of a heavy duty tool. Do not use tools for purposes not intended; for example, do not use circular saw to cut tree limbs or logs.
8. Dress properly. Do not wear loose clothing or jewellery, they can be caught in moving parts. Rubber gloves and non-skid footwear are recommended when working outdoors. Wear protecting hair covering to contain long hair.
9. Use eye protection. Also use face or dust mask if the cutting operation is dusty.
10. Connect dust extraction equipment. If devices are provided for the connection of dust extraction and collection facilities ensure these are connected and properly used.
11. Do not abuse the cord. Never carry the tool by the cord or yank it to disconnect it from the receptacle. Keep the cord away from heat, oil and sharp edges.
12. Secure work. Use clamps or a vise to hold the work. It is safer than using your hand and it frees both hands to operate tool.
13. Do not overreach. Keep proper footing and balance at all times.
14. Maintain tools with care. Keep cutting tools sharp and clean for better and safer performance. Follow instructions for lubrication and changing accessories. Inspect tool cords periodically and if damaged, have it repaired by authorized service center. Inspect extension cords periodically and replace, if damaged. Keep handles dry, clean, and free from oil and grease.
15. Disconnect tools. When not in use, before servicing, and when changing accessories such as blades, bits and cutters.
16. Remove adjusting keys and wrenches. Form the habit of checking to see that keys and adjusting wrenches are removed from the tool before turning it on.

17. Avoid unintentional starting. Do not carry a plugged-in tool with a finger on the switch. Ensure switch is off when plugging in.

18. Use outdoor extension leads. When tool is used outdoors, use only extension cords intended for outdoor use.

19. Stay alert. Watch what you are doing. Use common sense. Do not operate tool when you are tired.
20. Check damaged parts. Before further use of the tool, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, free running of moving parts, breakage of parts, mounting and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced by an authorized service center unless otherwise indicated in this handling instructions. Have defective switches replaced by an authorized service center. Do not use the tool if the switch does not turn it on and off.
21. Warning
    The use of any accessory or attachment, other than those recommended in this handling instructions, may present a risk of personal injury.
22. Have your tool repaired by a qualified person.
    This electric tool is in accordance with the relevant safety requirements. Repairs should only be carried out by qualified persons using original spare parts. Otherwise this may result in considerable danger to the user.

PRECAUTIONS ON USING CIRCULAR SAW

1. Do not use saw blades which are deformed or cracked.
2. Do not use saw blades made of high speed steel.
3. Do not use saw blades which do not comply with the characteristics specified in these instructions.
4. Do not stop the saw blades by lateral pressure on the disc.
5. Always keep the saw blades sharp.
6. Ensure that the safety cover moves smoothly and freely.
7. Never use the circular saw with its safety cover fixed in the open position.
8. Ensure that the retraction mechanism of the guard system operates correctly.
9. The saw blades body must be thinner than the riving knife and the width of cut, or kerf (with teeth set) must be greater than the thickness of the riving knife.
10. Never operate the circular saw with the saw blade turned upward or to the side.
11. Ensure that the material is free of foreign matters such as nails.
12. The riving knife should always be used except when plunging in the middle of the workpiece.
13. For model C 6BU, the saw blades range should be from 165 mm to 150 mm. For model C 7BU, the saw blades range should be from 185 mm to 170 mm.
14. Be careful of brake kickback
    This circular saw features an electric brake that functions when the switch is released. As there is some kickback when the brake functions, be sure to hold the main body securely.
15. When the brake becomes ineffective, replace the carbon brushes with new ones.

SPECIFICATIONS

Model C6BU C7BU
Voltage 230V		~
Cutting Depth	90° 54 mm 63 mm
	45° 39 mm 45 mm
Power Input 1010W 1150W
No-Load Speed 5000/min
Weight (without cord) 3.5 kg 4.0 kg

STANDARD ACCESSORIES

(1) Saw Blade (mounted on tool) 1

(Dia. 165 mm ...... C6BU) Dia. 185 mm ...... C7BU)

(2) Box Wrench 1
(3) Guide 1
(4) Wing-bolt 1

Standard accessories are subject to change without notice.

OPTIONAL ACCESSORIES (sold separately)

(1) Dust Collector Set (D)

Connect the suction hose to collect saw dust with the vacuum cleaner (see Fig. 12).

(2) Washer (A)

...... for 16 mm (Hole dia. of saw blade) ...... for 30 mm (Hole dia. of saw blade)

Optional accessories are subject to change without notice.

APPLICATION

Cutting various types of wood.

PRIOR TO OPERATION

1. Power source

Ensure that the power source to be utilized conforms to the power requirements specified on the product nameplate.

2. Power switch

Ensure that the power switch is in the OFF position. If the plug is connected to a receptacle while the power switch is in the ON position, the power tool will start operating immediately, which could cause a serious accident.

3. Extension cord

When the work area is removed from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

4. Prepare a wooden workbench (Fig. 1)

Since the saw blade will extend beyond the lower surface of the lumber, place the lumber on a workbench when cutting. If a square block is utilized as a workbench, select level ground to ensure it is properly stabilized. An unstable workbench will result in hazardous operation.

CAUTION

To avoid possible accident, always ensure that the portion of lumber remaining after cutting is securely anchored or held in position.

ADJUSTING THE SAW PRIOR TO USE

1. Adjusting the cutting depth

As shown in Fig. 2, hold the handle with one hand while loosening the knob with the other.

The cutting depth can be adjusted by moving the base to the desired position. In such manner adjust the cutting depth and then securely retighten the knob.

2. Adjusting the riving knife

Loosen the hexagonal – head bolt used to clamp the riving knife, adjust the riving knife to the position shown in Fig. 3 and securely retighten the bolt.

3. Adjusting the angle of inclination

As shown in Fig. 4 (A), Fig. 4 (B) by loosening the knob on the incline gauge and the wing-bolt on the base, the saw blade may be inclined to a maximum angle of 45^ in relation to the base. After having completed the adjustment, reconfirm that the knob and the wing bolt are firmly tightened.

4. Regulating the guide (Fig. 5)

The cutting position can be regulated by moving the guide to the left or right after loosening its wingbolt. The guide may be mounted on either the right or left side of the tool.

5. Adjusting the guide piece

On the circular saw, it is possible to make fine adjustment of the fixing position of the guide piece, where the saw blade and the premarked line are to be aligned.

When the saw is shipped from the factory, the linear portion of a front scale on the guide piece is aligned with the central position of the saw blade. (Fig. 6)

Loosen the fixed screw on the guide piece, should the fixing position be wrong, and make necessary adjustment of the position.

CUTTING PROCEDURES

1. Place the base on the material, then align the premarked line and the sawblade with the guide piece front scale section at the front of the base. (Fig. 6)

When the base is not slanted, use the large cutout as the guide. (Fig. 6, Fig. 7 (A))

If the base is slanted (45 degrees), use the small front scale as the guide. (Fig. 6, Fig. 7 (B))

1. Ensure that the switch is turned to the ON position before the saw blade comes in contact with the lumber. The switch is turned ON when the trigger is squeezed; and OFF when the trigger is released.

2. Moving the saw straight at a constant speed will produce optimum cutting.

CAUTIONS

Before starting to saw, ensure that the saw blade has reached full speed revolution.

- Should the saw blade be stopped or made an abnormal noise during operation, turn off the switch immediately.

○Always take care in preventing the power cord from coming near the revolving saw blade.

MOUNTING AND DISMOUNTING THE SAW BLADE

CAUTION

To avoid serious accident, ensure the switch is in the OFF position, and the power source is disconnected.

1. Dismounting the saw blade

(1) Set the cutting volume at maximum, and place the Circular Saw as shown in Fig. 8.
(2) Depress the lock lever, lock the spindle, and remove the hexagonal-head bolt with the box wrench.
(3) While holding the safety cover lever to keep the safety cover fully retracted into the saw cover, remove the saw blade.

2. Mounting the Saw Blade:

(1) Thoroughly remove any sawdust which has accumulated on the spindle, bolt and washers.
(2) As shown in Fig. 9, the side of Washer (A) with a projected center the same diameter as the inner diameter of the saw blade and the concave side of Washer (B) must be fitted to the saw blade sides.

* Washer (A) is supplied for 2 types of saw blades with the hole diameters of 16 mm and 30 mm. (When buying the Circular Saw, one type of washer (A) is supplied.) In case the hole diameter of your saw blade does not correspond to that of washer (A), please contact the shop where you purchased the Circular Saw.

(3) To assure proper rotation direction of the saw blade, the arrow direction on the saw blade must coincide with the arrow direction on the saw cover.

(4) Using the fingers, tighten the hexagonal-head bolt retaining the saw blade as much as possible. Then depress the lock lever, lock the spindle, and thoroughly tighten the bolt.

CAUTION

After having attached the saw blade, reconfirm that the lock lever is firmly secured in the prescribed position.

MAINTENANCE AND INSPECTION

1. Inspecting the saw blade:

Since use of a dull saw blade will degrade efficiency and cause possible motor malfunction, sharpen or replace the saw blade as soon as abrasion is noted.

2. Inspecting the mounting screws:

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws

be loose, retighten them immediately. Failure to do so could result in serious hazard.

3. Inspecting the carbon brushes (Fig. 10)

The motor employs carbon brushes which are consumable parts. Since an excessively worn carbon brush can result in motor trouble, replace the carbon brushes with new ones having the same carbon brush No. shown in the figure when it becomes worn to or near the "wear limit". In addition, always keep carbon brushes clean and ensue that they slide freely within the brush holders.

CAUTION

○When replacing the new carbon brushes, always use genuine Hitachi carbon brushes with the number (56) specified in the drawing.

The brake may not work if other than the specified carbon brushes are used.

When the brake becomes ineffective, replace the carbon brushes with new ones.

4. Replacing carbon brushes:

Disassemble the brush caps with a slotted-head screwdriver. The carbon brushes can then be easily removed.

5. Maintenance of the motor

The motor unit winding is the very "heart" of the power tool.

Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

6. Adjusting the base and saw blade to maintain perpendicularity:

The angle between the base and the saw blade has been adjusted to 90^ , however should this perpendicularity be lost for some reason, adjust in the following manner:

(1) Turn the base face up (Fig. 11) and loosen the knob and wing-bolt (Fig. 4 (A), Fig. 4 (B)).

(2) Apply a square to the base and the saw blade and turning the slotted set screw with a slotted-head screwdriver, shift the position of the base to produce the desired right angle.

7. Service parts list

A: Item No.

B: Code No.

C: No. Used

D: Remarks

CAUTION

Repair, modification and inspection of Hitachi Power Tools must be carried out by an Hitachi Authorized Service Center.

This Parts List will be helpful if presented with the tool to the Hitachi Authorized Service Center when requesting repair or other maintenance.

In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed.

MODIFICATIONS

Hitachi Power Tools are constantly being improved and modified to incorporate the latest technological advancements.

Accordingly, some parts (i.e. code numbers and/or design) may be changed without prior notice.

NOTE

Due to HITACHI's continuing program of research and development, the specifications herein are subject to change without prior notice.

Information concerning airborne noise and vibration

The measured values were determined according to EN50144.

The typical A-weighted sound pressure level :

94 dB (A) (C6BU)

95 dB (A) (C7BU)

The typical A-weighted sound power level :

107 dB (A) (C6BU)

108 dB (A) (C7BU)

Wear ear protection.

The typical weighted root mean square acceleration value does not exceed 2.5 m/s^2 .

●Information about power supply system of nominal voltage 230 V\~ (C7BU)

Under unfavorable mains conditions, this power tool may cause transient voltage drops or interfering voltage fluctuations.

This power tool is intended for the connection to a power supply system with a maximum permissible system impedance Z_MAX of 0.44 Ohm at the interface point (power service box) of the user's supply.

The user has to ensure that this power tool is connected only to a power supply system which fulfills the requirement above.

If necessary, the user can ask the public power supply company for the system impedance at the interface point.

C6BU

A	B	C	D	A	B	C	D
1 961-729	1			42 600-1VV	1	6001VVCMPS2L
2 949-794	1	M6×20		43 958-130	1
3 302-742	1	"1, 2, 43"		44 938-477	2	M5×8
4 ————	1			45 960-685	2
5 302-449	1			46 999-056	2
6 302-433	1			47 945-161	2
7 961-807	1			48 981-373	1
8 600-3VV	1	6003VVCMPS2S		49 953-327	1	D8.8
9 302-463	1			50 500-247Z	1
10 302-461	1			51 937-631	1
11 302-435	1			52 984-750	2	D4×16
12 990-430	2	M4×10		53 938-307	1
13 302-476	1			54 981-373	1
14 302-409	1	165MM-D30		55 953-121	2	D5×50
15 302-423	1			56 316-441	1
16 302-427	1	M8×15.5		57 316-442	1
17 302-458	2			58 949-433	1	M8
18 676-531	1	P-7		59 308-479	1
19 303-801	1			60 949-686	1	D6×40
20 303-838	1			61 976-815	1	M4×8
21 302-468	1	M8×10		62 316-246	1
22 316-444	1	M8×105		63 308-480	2	D6×17
23 992-013	2	M5×14		64 302-457	1	M8×30
24 302-464	1			65 316-443	1	"17, 58, 59, 61-64, 68, 69"
25 304-043	1	M4×10
26 301-653	4	D4×20		66 301-806	1	M6×15
27 302-434	3	M5×45		67 302-469	1	M6×6
28 ————	1			68 949-425	1	M6
29 ————	1			69 302-459	1	M6×17
30 316-447	1	"44, 45"		501 302-756	1
31 316-445	1			502 302-478	1	13MM
32 959-141	1	50092
33 930-039	1
34 316-446	1
35 981-373	3
36 930-703	2
37 340-424E	1	"36"
38 302-454	1
39 608-VVM	1	608VVMC2EPS2L
40 360-479E	1
41 302-453	1

C7BU

A	B	C	D	A	B	C	D
1 961-729	1			41 938-477	2	M5×8
2 949-794	1	M6×20		42 960-685	2
3 302-993	1	"1, 2, 40"		43 999-056	2
4 ————	1			44 945-161	2
5 302-988	1			45 981-373	1
6 302-433	1			46 953-327	1	D8.8
7 961-807	1			47 500-247Z	1
8 600-3VV	1	6003VVCMPS2S		48 937-631	1
9 303-512	1			49 984-750	2	D4×16
10 302-991	1			50 930-039	1
11 302-435	1			51 938-307	1
12 990-430	2	M4×10		52 981-373	1
13 302-476	1			53 953-174	2	D5×55
14 302-412	1	185MM-D30		54 316-441	1
15 302-423	1			55 316-442	1
16 302-427	1	M8×15.5		56 949-433	1	M8
17 302-458	2			57 308-479	1
18 676-531	1	P-7		58 949-686	1	D6×40
19 303-801	1			59 308-480	2	D6×17
20 316-444	1			60 305-541	1
21 992-013	2	M5×14		61 302-468	1	M4×10
22 302-464	1			62 976-815	1	M4×8
23 304-043	1	M4×10		63 316-246	1
24 301-653	4	D4×20		64 301-806	1	M6×15
25 302-434	3	M5×45		65 302-457	1	M8×30
26 ————	1			66 301-806	1	M6×15
27 ————	1			67 316-471	1	"17, 56, 57, 59, 62, 63, 65, 68, 69"
28 316-447	1	"41, 42"
29 316-445	1			68 949-425	1	M6
30 959-141	1	50092		69 302-459	1	M6×17
31 316-446	1			501 302-756	1
32 981-373	3			502 302-478	1	13MM
33 930-703	2
34 340-425E	1	"33"
35 302-989	1
36 608-VVM	1	608VVMC2EPS2L
37 360-480E	1
38 302-453	1
39 600-1VV	1	6001VVCMPS2L
40 958-130	1

Line drawing of a quill pen in an inkwell (no text or symbols)

Line drawing of a quill pen in an inkwell (no text or symbols)

Svenska		Suomi
EF-DEKLARATION BETRÄFFANDE LIKFORMIGHETVi tillkännagiver med eget ansvar att denna produkt överensstämmer med standard eller standardiserat dokument EN50144, EN55014 och EN61000-3 i enlighet med råddirektiven 73/23/E∅S, 89/336/E∅S och 98/37/ EF.Denna deklaration gäller för CE-märkningen på produkten.		EY-ILMOITUS YHDENMUKAISUUDESTAYksinomaisella vastuudella vakuutamme, että tämä tuote vastaa normeja tai normitettuja dokumentteja EN50144, EN55014 ja EN61000-3 yhteisön ohjeiden 73/ 23/ETY, 89/336/ETY ja 98/37/EY mukaisesti.Tämä ilmoitus sovelletaan tuotekohtaiseen CE- merkintään.
Dansk		English
EF-DEKLARATION OM ENSARTETHEDVi erlkærer os fuldstændige ansvarlige for, at dette produkt modsvarer gældende standard eller de standardiserede dokumenter EN50144, EN55014 og EN61000-3 i overensstemmelse med EF-direktiver 73/ 23/E∅F, 89/336/E∅S og 98/37/EF.Denne erklæring qælder produkter, der er mærket med CE.		EC DECLARATION OF CONFORMITYWe declare under our sole responsibility that this product is in conformity with standards or standardized documents EN50144, EN55014 and EN61000-3 in accordance with Council Directives 73/23/EEC, 89/336/ EEC and 98/37/EC.This declaration is applicable to the product affixed CE marking.
Norsk	EF'S ERKLÆRING OM OVERENSSTEMMELSEVierklærerherved at vi påtar oss eneansvaret for at dette produktet er i overensstermmelse med normer eller standardiserte dokumenter EN50144, EN55014 og EN61000-3 i samsvar med Rådsdirektiver 73/23/E∅S, 89/336/E∅S og 98/37/EF.Denne erklæringen gjelder produktets påklistrede CE- merking.
Representative office in Europe Hitachi Power Tools Europe GmbH Siemensring 34, 47877 Willich 1, F. R. Germany Head office in Japan Hitachi Koki Co., Ltd.Shinagawa Intercity Tower A, 15-1, Konan 2-chome, Minato-ku, Tokyo, Japan 31. 12. 2003 K. Kato Board Director

Hitachi Koki Co., Ltd.