CM4SB2 - Saw HITACHI - Free user manual and instructions

USER MANUAL CM4SB2 HITACHI

Technical line drawing of a mechanical cutting tool with no visible text or symbols

SAFETY INSTRUCTIONS AND INSTRUCTION MANUAL

WARNING

IMPROPER OR UNSAFE use of this power tool can result in death or serious bodily injury!

This manual contains important information about product safety. Please read and understand this manual BEFORE operating the power tool. Please keep this manual available for other users and owners before they use the power tool.

This manual should be stored in safe place.

INSTRUCTIONS DE SECURITE ET MODE D'EMPLOI

AVERTISSEMENT

MOUNTING AND DISMOUNTING THE DIAMOND WHEEL ...... 13

CUTTING PROCEDURES 14

MAINTENANCE AND INSPECTION 15

ACCESSORIES 17

STANDARD ACCESSORIES 17

OPTIONAL ACCESSORIES 17

PARTS LIST 48

TABLE DES MATIERES

Français

Page Page

INFORMATIONS IMPORTANTES DE SÉCURITÉ .... 18

SIGNIFICATION DES MOTS D'AVERTISSEMENT .... 18

SECURITE 19

REGLES GENERALE DE SECURITE ..... 19

REGLES DE SECURITE SPECIFIQUES ET SYMBOLES 21

CONSIGNES DE SÉCURITÉ COMPLÉMENTAIRES RELATIVES À TOUTES LES SCIES .... 24

DOUBLE ISOLATION POUR UN FONCTIONNEMENT PLUS SUR ..... 25

DESCRIPTION FONCTIONNELLE 26

NOM DES PARTIES 26

SPECIFICATIONS ......26

ASSEMBLAGE ET FONCTIONNEMENT ..... 27

UTILISATIONS 27

IMPORTANT SAFETY INFORMATION

Read and understand all of the safety precautions, warnings and operating instructions in the Instruction Manual before operating or maintaining this power tool.

Most accidents that result from power tool operation and maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures.

Basic safety precautions are outlined in the “SAFETY” section of this Instruction Manual and in the sections which contain the operation and maintenance instructions.

Hazards that must be avoided to prevent bodily injury or machine damage are identified by WARNINGS on the power tool and in this Instruction Manual.

NEVER use this power tool in a manner that has not been specifically recommended by HITACHI.

MEANINGS OF SIGNAL WORDS

WARNING indicates a potentially hazardous situations which, if ignored, could result in death or serious injury.

CAUTION indicates a potentially hazardous situations which, if not avoided, may result in minor or moderate injury, or may cause machine damage.

NOTE emphasizes essential information.

SAFETY

GENERAL SAFETY RULES

WARNING: Read all instructions

Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.

The term “power tool” in all of the warnings listed below refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

SAVE THESE INSTRUCTIONS

1) Work area safety

a) Keep work area clean and well lit.
Cluttered or dark areas invite accidents.

b) Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust.

Power tools create sparks which may ignite the dust of fumes.

c) Keep children and bystanders away while operating a power tool.

Distractions can cause you to lose control.

2) Electrical safety

a) Power tool plugs must match the outlet.
Never modify the plug in any way.
Do not use any adapter plugs with earthed (grounded) power tools.
Unmodified plugs and matching outlets will reduce risk of electric shock.

b) Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators.

There is an increased risk of electric shock if your body is earthed or grounded.

c) Do not expose power tools to rain or wet conditions.

Water entering a power tool will increase the risk of electric shock.

d) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool.

Keep cord away from heat, oil, sharp edges or moving parts.

Damaged or entangled cords increase the risk of electric shock.

e) When operating a power tool outdoors, use an extension cord suitable for outdoor use.

Use of a cord suitable for outdoor use reduces the risk of electric shock.

3) Personal safety

a) Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication.

A moment of inattention while operating power tools may result in serious personal injury.

b) Use safety equipment. Always wear eye protection.

Safety equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

c) Avoid accidental starting. Ensure the switch is in the off position before plugging in.

Carrying power tools with your finger on the switch or plugging in power tools that have the switch on invites accidents.

d) Remove any adjusting key or wrench before turning the power tool on.

A wrench or a key left attached to a rotating part of the power tool may result in personal injury.

e) Do not overreach. Keep proper footing and balance at all times.

This enables better control of the power tool in unexpected situations.

f) Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from moving parts.

Loose clothes, jewellery or long hair can be caught in moving parts.

g) If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used.

Use of these devices can reduce dust-related hazards.

4) Power tool use and care

a) Do not force the power tool. Use the correct power tool for your application.

The correct power tool will do the job better and safer at the rate for which it was designed.

b) Do not use the power tool if the switch does not turn it on and off.

Any power tool that cannot be controlled with the switch is dangerous and must be repaired.

c) Disconnect the plug from the power source and/or the battery pack from the power toll before making any adjustments, changing accessories, or storing power tools.

Such preventive safety measures reduce the risk of starting the power tool accidentally.

d) Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool.

Power tools are dangerous in the hands of untrained users.

e) Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tools operation.

If damaged, have the power tool repaired before use.

Many accidents are caused by poorly maintained power tools.

f) Keep cutting tools sharp and clean.

Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.

g) Use the power tool, accessories and tool bits etc., in accordance with these instructions and in the manner intended for the particular type of power tool, taking into account the working conditions and the work to be performed.

Use of the power tool for operations different from intended could result in a hazardous situation.

5) Service

a) Have your power tool serviced by a qualified repair person using only identical replacement parts.

This will ensure that the safety of the power tool is maintained.

- WARNING- To reduce the risk of injury, user must read instruction manual.

SPECIFIC SAFETY RULES AND SYMBOLS

1. Hold tools by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.
2. ALWAYS wear ear protectors when using the tool for extended periods.

Silhouette of a human head with a thermometer inside, symbolizing health or urgency (no text or symbols)

Prolonged exposure to high intensity noise can cause hearing loss.

1. NEVER touch moving parts.

Symbolic icon showing a hand crushing a bird and a circular app icon with a question mark (no text or numbers present)

NEVER place your hands, fingers or other body parts near the tool's moving parts.

1. NEVER operate without all guards in place.

NEVER operate this tool without all guards or safety features in place and in proper working order. If maintenance or servicing requires the removal of a guard or safety feature, be sure to replace the guard or safety feature before resuming operation of the tool.

1. Use right tool.

Don't force small tool or attachment to do the job of a heavy-duty tool.

Don't use tool for purpose not intended —for example— don't use circular saw for cutting tree limbs or logs.

1. NEVER use a power tool for applications other than those specified.

NEVER use a power tool for applications other than those specified in the Instruction Manual.

1. Handle tool correctly.

Operate the tool according to the instructions provided herein. Do not drop or throw the tool. NEVER allow the tool to be operated by children, individuals unfamiliar with its operation or unauthorized personnel.

1. Keep all screws, bolts and covers tightly in place.

Keep all screws, bolts, and plates tightly mounted. Check their condition periodically.

1. Do not use power tools if the plastic housing or handle is cracked.

Cracks in the tool's housing or handle can lead to electric shock. Such tools should not be used until repaired.

1. Blades and accessories must be securely mounted to the tool.

Prevent potential injuries to yourself or others. Blades, cutting implements and accessories which have been mounted to the tool should be secure and tight.

1. Keep motor air vent clean.

The tool's motor air vent must be kept clean so that air can freely flow at all times. Check for dust build-up frequently.

1. Operate power tools at the rated voltage.

Operate the power tool at voltages specified on its nameplate.

If using the power tool at a higher voltage than the rated voltage, it will result in abnormally fast motor revolution and may damage the unit and the motor may burn out.

1. NEVER use a tool which is defective or operating abnormally.

If the tool appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and arrange for repairs by a Hitachi authorized service center.

1. NEVER leave tool running unattended. Turn power off.

Don't leave tool until it comes to a complete stop.

1. Carefully handle power tools.

Should a power tool be dropped or struck against hard materials inadvertently, it may be deformed, cracked, or damaged.

1. Do not wipe plastic parts with solvent.

Solvents such as gasoline, thinner benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such solvents.

Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly.

1. ALWAYS wear eye protection that meets the requirement of the latest revision of ANSI

Standard Z87.1.

Silhouette of a helmet with a visor icon and arrow pointing to the head (no text or symbols)

1. ALWAYS wear a mask or respirator to protect yourself from dust or potentially harmful particles generated during the operation.

2. Do NOT use any cutting tool other than a diamond wheel.

Use the diamond wheel specified in this manual.

1. Don't use it for cutting of metallic materials. Diamond wheel may be broken or its service life may be remarkably reduced when it is used for cutting of metallic materials. Be sure not to use the wheel for cutting of metals.

2. Do not start the cutter while the diamond wheel is in contact with the material.

3. Keep the motor interior free of water.

4. Prior to use, be sure to check the diamond wheel in such details as crack, broken part, bent part and the like. Don't use a diamond wheel if any of the above defect is found on the wheel. Also confirm that no abnormality exists by actual test running.

5. Proceed with cutting operation when full speed has been reached.
6. Do NOT apply excessive force.
7. When cutting concrete, tile, or stone, the maximum cutting depth should be held to within 25/32" (20 mm).
8. Never lay down the cutter while the diamond wheel is revolving.

Also, do not stop the cutter with the diamond wheel forcibly depressed against the material.

1. Exercise care to position the cutter at a safe, stable spot when cutting.
2. Take good care of the power tool and keep it clean.
3. Definitions for symbols used on this tool

V ...... volts

Hz ...... hertz

A.....amperes

no ...... no load speed

W......w att

☐...... Class II Construction

---/min ... revolutions per minute

FURTHER SAFETY INSTRUCTIONS FOR ALL SAWS

DANGER!

a) Keep hands away from cutting area and do not reach underneath the workpiece. Contact with the wheel will result in injury.
b) Adjust the cutting depth to the thickness of the workpiece.
c) Never hold piece being cut in your hands or across your leg. Secure the workpiece to a stable platform.

It is important to support the work properly to minimize body exposure, wheel binding, or loss of control.

d) Never use damaged or incorrect wheel washers or bolt.

The wheel washers and bolt were specially designed for your saw, for optimum performance and safety of operation.

Causes and operator prevention of kickback:

• kickback is a sudden reaction to a pinched, bound or misaligned wheel, causing an uncontrolled saw to lift up and out of the workpiece toward the operator.
• when the wheel is pinched or bound tightly by the kerf closing down, the wheel stalls and the motor reaction drives the unit rapidly back toward the operator.

Kickback is the result of saw misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

a) Maintain a firm grip on the saw and position your arms to resist kickback forces.

Position your body either side of the wheel, but not in line with the wheel.

Kickback could cause the saw to jump backwards, but kickback forces can be controlled by the operator, if proper precautions are taken.

b) When wheel is binding, or when interrupting a cut for any reason, release the trigger and hold the saw motionless in the material until the wheel comes to a complete stop.

Never attempt to remove the saw from the work or pull the saw backward while the wheel is in motion or kickback may occur.

Investigate and take corrective actions to eliminate the cause of wheel binding.

c) When restarting a saw in the workpiece, centre the wheel in the kerf and check that wheel segments are not engaged into the material.

If wheel is binding, it may walk up or kickback from the workpiece as the saw is restarted.

d) Support large panels to minimize the risk of wheel pinching and kickback.

Large panels tend to sag under their own weight.

Supports must be placed under the panel on both sides, near the line of cut and near the edge of the panel.

e) Do not use dull or damaged wheels.

Unsharpened or improperly set wheels produce narrow kerf causing excessive friction, wheel binding and kickback.

f) Wheel depth adjusting locking levers must be tight and secure before making cut.

If wheel adjustment shifts while cutting, it may cause binding and kickback.

To ensure safer operation of this power tool, HITACHI has adopted a double insulation design. “Double insulation” means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator. Either the symbol “☐” or the words “Double insulation” appear on the power tool or on the nameplate.

Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this Instruction Manual, including not using the power tool in wet environments.

To keep the double insulation system effective, follow these precautions:

○Only HITACHI AUTHORIZED SERVICE CENTER should disassemble or assemble this power tool, and only genuine HITACHI replacement parts should be installed.

○Clean the exterior of the power tool only with a soft cloth moistened with soapy water, and dry thoroughly.

Never use solvents, gasoline or thinners on plastic components; otherwise the plastic may dissolve.

SAVE THESE INSTRUCTIONS AND MAKE THEM AVAILABLE TO OTHER USERS AND OWNERS OF THIS TOOL!

FUNCTIONAL DESCRIPTION

NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool.

NEVER operate, or attempt any maintenance on the tool unless you have first read and understood all safety instructions contained in this manual.

Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool.

NAME OF PARTS

ME OF PARTS Stopper Switch trigger Lever Tail cover Brush cap (Under the tail cover) Base Bolt Washer (A) Diamond wheel

Fig. 1

SPECIFICATIONS

Motor Single-Phase Series Commutator Motor
Power Source Single-Phase 120 V AC 60 Hz / DC
Current 11.6 A
No-Load Speed 11,500/min
Max. cutting depth	1-11/32"(34mm) (wheel dia. 4-3/8"(110mm))1-15/64"(31.5mm) (wheel dia. 4-9/64"(105mm))
Diamond wheel	4-3/8"(110mm) external dia. × 3/64"(1.2mm)thickness × 7/8"(22.2mm) internal dia.
Weight (without cord) 6.17 lbs (2.8kg)

ASSEMBLY AND OPERATION

APPLICATIONS

○Cutting and scribing of concrete.
○Cutting and scribing various types of stones.
○Cutting and scribing various types of tiles.

PRIOR TO OPERATION

1. Power source

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

2. Power switch

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

3. Extension cord

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

Black and white illustration of a hand with a lightning bolt symbol, no text or labels present.

⚠ WARNING: Damaged cord must be replaced or repaired.

4. Check the receptacle

If the receptacle only loosely accepts the plug, the receptacle must be repaired. Contact a licensed electrician to make appropriate repairs.

If such a faulty receptacle is used, it may cause overheating, resulting in a serious hazard.

5. Mounting the diamond wheel

For details, refer to the item “Mounting and dismounting the diamond wheel”.

6. Confirm that the cutting depth adjusting lever is securely clamped.

7. Cutting depth adjustment (Fig. 2)

Lowering the lever will loosen and raising it will tighten.

Loosening the lever and moving the base will allow adjustment of the cutting depth.

CAUTION:

●Leaving the lever loosened may result in injury. Securely tighten the lever after adjusting the cutting depth.

- When the cutting depth exceeds 25/32" (20mm), concrete, and so on must be cut in two steps. Never try to cut in one step; otherwise, the motor is liable to be overloaded and damaged may result. Also, cutting efficiently will be lower in such an instance.

Tighten Lever Loosen Cutting depth Base

Fig. 2

MOUNTING AND DISMOUNTING THE DIAMOND WHEEL

CAUTION:

●Be sure to disconnect the attachment plug from the power receptacle to avoid serious trouble.

1. Mounting the diamond wheel

(1) Thoroughly remove dust accumulated on the spindle and washers.
(2) As shown in Fig. 3. the concave portions of washers (A) and (C) must be on the diamond wheel side.
(3) Thoroughly clamp the bolt.

1. Dismounting the diamond wheel

Use the provided wrench and box wrench to remove the bolt. (Fig. 4)

CAUTION:

●A diamond wheel for mounting on this equipment must have 7/8" (22.2mm) internal diameter. No other sized diamond wheel should be used.

Bolt (left hand screw) Diamond wheel Washer (A) Spindle Washer (C)

Fig. 3

Tighten Loosen Box wrench Wrench

Fig. 4

CUTTING PROCEDURES

1. Set the machine body (base) on the material to be cut; use the side on the base to align the diamond wheel with the cutting line. (Fig. 5)

2. Turn the switch ON with the diamond wheel initially kept off the material to be cut. The power switch is turned ON when the trigger is pulled by one's finger, and is turned OFF when the trigger is released. If the stopper is depressed after the trigger is pulled, the power switch becomes locked, even though the trigger is released, proving particularly convenient for continuous operation. When the power switch is to be turned OFF, the stopper can be released by pulling the trigger, and the power switch is turned OFF upon releasing the trigger.

Base Cutting line Guide line on the base Guide line on the base

Fig. 5

CAUTION:

• Do NOT use the diamond wheel for cutting along curves or at angles; otherwise, it may be damaged, resulting in extremely shortened service life.
• Before starting to cut, confirm that the diamond wheel has attained full-speed revolution.
• Should the diamond wheel stop or make an abnormal noise while operating, promptly turn OFF the switch.
• Always take care in preventing the power cord from coming near to the revolving diamond wheel.
• When finished with a job, pull out the plug from the power receptacle.

MAINTENANCE AND INSPECTION

WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection.

Using cracked, deformed or damaged wheels can lead to wheel breakage and resulting serious injury.

1. Inspecting the diamond wheel

Since use of a dull diamond wheel will cause motor malfunctioning and degraded efficiently, replace with a new one without delay when abrasion is noted.

1. Inspecting the screws

Regularly inspect all screws and ensure that they are fully tightened. Should any of the screws be loosened, retighten them immediately.

WARNING: Using this cutter with loosened screws is extremely dangerous.

1. 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.

1. Inspecting the carbon brushes (Fig. 6)

The motor employs carbon brushes which are consumable parts. Replace the carbon brush with a new one when it becomes worn to its wear limit. Always keep carbon brushes clean and ensure that they slide freely within the brush holders.

Wear limit 43 (6mm) 0.24" 0.67" (17mm) No. of carbon brush

Fig. 6

CAUTION:

- Using this grinder with a carbon brush which is worn in excess of the wear limit will damage the motor.

NOTE: Use HITACHI carbon brush No. 43 indicated in Fig. 6.

○Replacing carbon brushes:

Loosen the set screw and remove the tail cover. Remove the brush caps and carbon brushes. After replacing the carbon brushes, do not forget to tighten the brush caps securely and to install the tail cover.

1. Service and repairs

All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY.

6. 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 a 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.

ACCESSORIES

WARNING: ALWAYS use Only authorized HITACHI replacement parts and accessories. NEVER use replacement parts or accessories which are not intended for use with this tool. Contact HITACHI if you are not sure whether it is safe to use a particular replacement part or accessory with your tool.

The use of any other attachment or accessory can be dangerous and could cause injury or mechanical damage.

NOTE: Accessories are subject to change without any obligation on the part of the HITACHI.

STANDARD ACCESSORIES

① Box Wrench (Code No. 940543) .... 1
② Wrench (Code No. 941057)....1
③ Washer (B) (Code No.956879) 1
Hole diameter 25/32" (20 mm) for Diamond Wheel
④ Diamond Wheel (Code No. 728726)....1
Diameter 4" (104 mm), Hole diameter 7/8" (22.2 mm)

Diagram of a circular mechanical component with a central hole and curved arrow indicating rotation (no text or symbols)

OPTIONAL ACCESSORIES..... sold separately

○Diamond Wheel

Diagram of a circular mechanical or electrical component with symmetrical arms and a central hub, no text or symbols present.

Diameter Hole diameter Thickness Code No.
4-1/8" 25/32" 3/64"(106mm) (20mm) (1.2mm)			321192

NOTE: Specifications are subject to change without any obligation on the part of the HITACHI.

INFORMATIONS IMPORTANTES DE SÉCURITÉ

Abstract black-and-white icon of a human head silhouette with a thermometer symbol inside (no text or numbers)

Symbolic icon showing a hand crushing a circular button with a question mark, representing collision or verification (no text present)

Silhouette of a helmet with a visor icon and arrow pointing to the head (no text or symbols)

Black and white illustration of a hand with a lightning bolt symbol (no text or numbers)

Circular mechanical component with a central hub and curved arrow indicating rotation (no text or symbols)

Diagram of a circular mechanical or electrical component with symmetrical arms and a central hub, no text or symbols present.

Abstract black-and-white icon of a human head with a thermometer inside, no text or symbols present.

Symbolic icon showing a hand crushing a bird, with a circular icon containing a question mark (no text or numbers present)

Silhouette of a helmet with a visor and arrow pointing to it (no text or symbols)

Black and white illustration of a hand with a lightning bolt symbol (no text or numbers)

Diagram of a circular mechanical component with a central hole and curved arrow indicating rotation (no text or symbols)

ACCESORIOS OPCIONALES..... De venta por separado

○Disco de diamante

Diagram of a circular mechanical component with six arms and a central hub, no text or symbols present

Simple 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)

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

WARNING:

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints,
  ●Crystalline silica from bricks and cement and other masonry products, and
  ●Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.

AVERTISSEMENT :

Minato-ku, Tokyo 108-6020, Japan

Distributed by

Hitachi Koki U.S.A., Ltd.

3950 Steve Reynolds Blvd.

Norcross, GA 30093

Hitachi Koki Canada Co.

6395 Kestrel Road

Mississauga ON L5T 1Z5

604

Code No. C99148661

Printed in China