Hitachi C 9U3 ユーザーマニュアル

Circular Saw

C 9U2

Handling instructions

Keep for future reference

English

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1 673-002 1 HK1212

2 303-789 1

3 303-790 1

4 303-797 2 M6 × 14

5 998-887 1

6 620-3VV 1

6203VVCMPS2L

7 325-353 1

8 303-805 1

9 303-804 1

10 992-013 2 M5 × 14

11 326-802 1

12-1 303-809 1 235MM-D15.9

HOLE-NT20

12-2 303-810 1 235MM-D30

HOLE-NT20

13 325-354 1

1 4 ––––––––––– 1

15 324-669 1

16 324-139 1

17 302-464 1

18 304-043 1 M4 × 10

19 302-423 1

20 324-662 1 M8 × 15.5

21 305-691 4 M4 × 14

22 937-623 2

23 340-660Q 1 220V – 230V, “22”

24 325-352 1

25 360-759E 1 220V – 230V

26 303-793 1

27 949-884 1 D8 × 50

28 325-350 1

29 961-729 1

30 949-794 1 M6 × 20

31 325-356 1

32 325-355 1

33 600-0VV 1

6000VVCMPS2L

34 960-251 2 D5 × 65

35 620-2VV 1

6202VVCMPS2L

36 303-792 1

37 324-660 1

38 676-531 1 P-7

39 303-801 1

40 324-658 1 M8

41 949-433 1 M8

42 301-806 1 M6 × 15

43 947-859 1

44 302-469 1 M6 × 6

45 325-360 1 “.40, 41, 46-50,

54, 55, 79”

46 317-333 1 M4 × 6

47 324-659 1

48 302-457 1 M8 × 30

49 308-481 1

50 308-482 1 D6 × 24

51 303-806 1

52 324-664 1 M8 × 10

53 303-800 1 M8

54 949-425 1 M6

55A 328-932 1 M6 × 20

56 301-653 5 D4 × 20

5 7 ––––––––––– 1

58 325-358 1

59 325-359 1

60 303-796 3 M5 × 40

61 938-477 2 M5 × 8

62 983-362 2

63 999-038 2

64 961-781 2

65 325-362 1 “61, 62”

66 938-307 1

67 958-049 1 D8.2

68 500455Z 1

69 325-357 1

70 305-720 1 D4 × 12

71 980-063 1

72 946-362 1

73 325-351 1

74 980-063 1

75 930-039 1

76 984-750 2 D4 × 16

77 937-631 1

79 308-480 1 D6 × 17

501 303-888 1

502 872-422 1 6MM

503 303-338 1

505 303-811 1

506 949-340 2 M6 × 16

English

15

GENERAL POWER TOOL SAFETY WARNINGS

WARNING

Read all safety warnings and all instructions.

Failure to follow the warnings and instructions may result in electric shock, ﬁ re and/or serious

injury.

Save all warnings and instructions for future reference.

The term “power tool” in the warnings refers to your mains-operated (corded) power tool or

battery-operated (cordless) power tool.

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 ﬂ ammable liquids, gases or dust.

Power tools create sparks which may ignite the dust or 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.

CONTENTS

GENERAL POWER TOOL SAFETY WARNINGS ........................................15

SAFETY INSTRUCTIONS FOR ALL SAWS ................................................17

FURTHER SAFETY INSTRUCTIONS FOR ALL SAWS ..............................18

SAFETY INSTRUCTIONS FOR SAWS WITH INNER PENDULUM

GUARD ........................................................................................................19

ADDITIONAL SAFETY INSTRUCTIONS FOR ALL SAWS WITH RIVING

KNIFE ..........................................................................................................20

PRECAUTIONS ON USING CIRCULAR SAW ............................................20

SYMBOL .......................................................................................................20

SPECIFICATIONS ........................................................................................ 21

STANDARD ACCESSORIES .......................................................................21

OPTIONAL ACCESSORIES (sold separately)..............................................21

APPLICATIONS ............................................................................................21

PRIOR TO OPERATION ...............................................................................21

ADJUSTING THE SAW PRIOR TO USE ......................................................22

CUTTING PROCEDURES ............................................................................24

MOUNTING AND DISMOUNTING THE SAW BLADE ................................. 24

MAINTENANCE AND INSPECTION ............................................................ 25

SERVICE PARTS LIST .................................................................................27

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Do not use any adapter plugs with earthed (grounded) power tools.

Unmodiﬁ ed 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.

f) If operating a power tool in a damp location is unavoidable, use a residual

current device (RCD) protected supply.

Use of an RCD 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 inﬂ uence of drugs,

alcohol or medication.

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

injury.

b) Use personal protective equipment. Always wear eye protection.

Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing

protection used for appropriate conditions will reduce personal injuries.

c) Prevent unintentional starting. Ensure the switch is in the oﬀ position before

connecting to power source and/or battery pack, picking up or carrying the

tool.

Carrying power tools with your ﬁ nger on the switch or energising 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 dust collection can reduce dust-related hazards.

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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 tool 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 aﬀ ect the power toolʼs

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, taking into account the working conditions and the work to be

performed.

Use of the power tool for operations diﬀ erent from those intended could result in a

hazardous situation.

5) Service

a) Have your power tool serviced by a qualiﬁ ed repair person using only identical

replacement parts.

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

CAUTION

Keep children and inﬁ rm persons away.

When not in use, tools should be stored out of reach of children and inﬁ rm persons.

SAFETY INSTRUCTIONS FOR ALL SAWS

DANGER

a) Keep hands away from cutting area and the blade. Keep your second hand on

auxiliary handle, or motor housing.

If both hands are holding the saw, they cannot be cut by the blade.

b) Do not reach underneath the workpiece.

The guard cannot protect you from the blade below the workpiece.

English

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c) Adjust the cutting depth to the thickness of the workpiece.

Less than a full tooth of the blade teeth should be visible below the workpiece.

d) 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, blade binding, or

loss of control.

e) Hold power tool 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 also make exposed metal parts of the power tool “live” and

shock the operator.

f) When ripping always use a rip fence or straight edge guide.

This improves the accuracy of cut and reduces the chance of blade binding.

g) Always use blades with correct size and shape (diamond versus round) of arbour

holes.

Blades that do not match the mounting hardware of the saw will run eccentrically, causing

loss of control.

h) Never use damaged or incorrect blade washers or bolt.

The blade washers and bolt were specially designed for your saw, for optimum

performance and safety of operation.

FURTHER SAFETY INSTRUCTIONS FOR ALL SAWS

Causes and operator prevention of kickback:

— kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an

uncontrolled saw to lift up and out of the workpiece toward the operator;

— when the blade is pinched or bound tightly by the kerf closing down, the blade stalls and

the motor reaction drives the unit rapidly back toward the operator;

— if the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the

blade can dig into the top surface of the wood causing the blade to climb out of the kerf and

jump 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 ﬁ rm grip with both hands on the saw and position your arms to resist

kickback forces.

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

Kickback could cause the saw to jump backwards, but kickback forces can be controlled by

the operator, if proper precautions are taken.

b) When blade is binding, or when interrupting a cut for any reason, release the

trigger and hold the saw motionless in the material until the blade comes to a

complete stop.

Never attempt to remove the saw from the work or pull the saw backward while the

blade is in motion or kickback may occur.

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

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19

c) When restarting a saw in the workpiece, centre the saw blade in the kerf and check

that saw teeth are not engaged into the material.

If saw blade 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 blade 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 blades.

Unsharpened or improperly set blades produce narrow kerf causing excessive friction,

blade binding and kickback.

f) Blade depth and bevel adjusting locking levers must be tight and secure before

making cut.

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

g) Use extra caution when making a “plunge cut” into existing walls or other blind

areas.

The protruding blade may cut objects that can cause kickback.

SAFETY INSTRUCTIONS FOR SAWS WITH INNER

PENDULUM GUARD

a) Check lower guard for proper closing before each use. Do not operate the saw if

lower guard does not move freely and close instantly. Never clamp or tie the lower

guard into the open position.

If saw is accidentally dropped, lower guard may be bent.

Raise the lower guard with the retracting handle and make sure it moves freely and does

not touch the blade or any other part, in all angles and depth of cut.

b) Check the operation of the lower guard spring. If the guard and the spring are not

operating properly, they must be serviced before use.

Lower guard may operate sluggishly due to damaged parts, gummy deposits, or build-up of

debris.

c) Lower guard should be retracted manually only for special cuts such as “plunge

cuts” and “compound cuts”. Raise lower guard by retracting handle and as soon

as blade enters the material, the lower guard must be released.

For all other sawing, the lower guard should operate automatically.

d) Always observe that the lower guard is covering the blade before placing saw

down on bench or floor.

An unprotected, coasting blade will cause the saw to walk backwards, cutting whatever is

in its path.

Be aware of the time it takes for the blade to stop after switch is released.

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20

ADDITIONAL SAFETY INSTRUCTIONS FOR ALL SAWS

WITH RIVING KNIFE

a) Use the appropriate riving knife for the blade being used.

For the riving knife to work, it must be thicker than the body of the blade but thinner than the

tooth set of the blade.

b) Adjust the riving knife as described in this instruction manual.

Incorrect spacing, positioning and alignment can make the riving knife ineffective in

preventing kickback.

c) Always use the riving knife except when plunge cutting.

Riving knife must be replaced after plunge cutting. Riving knife causes interference during

plunge cutting and can create kickback.

d) For the riving knife to work, it must be engaged in the workpiece.

The riving knife is ineffective in preventing kickback during short cuts.

e) Do not operate the saw if riving knife is bent.

Even a light interference can slow the closing rate of a guard.

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 lower guard moves smoothly and freely.

7. Never use the circular saw with its lower guard 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 models C9U2, the saw blades should be 235 mm.

14. Disconnect the plug from the receptacle before carrying out any adjustment,

servicing or maintenance.

SYMBOL

WARNING

The following show symbols used for the machine. Be sure that you understand their

meaning before use.

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

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