Makita 4107RH Instruction Manual download pdf (Page 4)

the least amount of wheel is exposed towards

the operator. The guard helps to protect operator

from broken wheel fragments and accidental

contact with wheel.

3. Use only diamond cut-off wheel for your

power tool. Just because the accessory can be

attached to your power tool, it does not assure

safe operation.

4. The rated speed of the wheel must be at least

equal to the maximum speed marked on the

power tool. Wheels running faster than their

rated speed can break and fly apart.

5. Always use undamaged wheel flanges that are

of correct diameter for your selected wheel.

Proper wheel flanges support the wheel thus

reducing the possibility of wheel breakage.

6. The outside diameter and the thickness of

your wheel must be within the capacity rating

of your power tool. Incorrectly sized wheels

cannot be adequately guarded or controlled.

7. The arbour size of wheels and flanges must

properly fit the spindle of the power tool.

Wheels and flanges with arbour holes that do not

match the mounting hardware of the power tool

will run out of balance, vibrate excessively and

may cause loss of control.

8. Do not use damaged wheels. Before each use,

inspect the wheels for chips and cracks. If

power tool or wheel is dropped, inspect for

damage or install an undamaged wheel. After

inspecting and installing the wheel, position

yourself and bystanders away from the plane

of the rotating wheel and run the power tool at

maximum no load speed for one minute.

Damaged wheels will normally break apart during

this test time.

9. Wear personal protective equipment.

Depending on application, use face shield,

safety goggles or safety glasses. As

appropriate, wear dust mask, hearing

protectors, gloves and shop apron capable of

stopping small abrasive or workpiece

fragments. The eye protection must be capable

of stopping flying debris generated by various

operations. The dust mask or respirator must be

capable of filtrating particles generated by your

operation. Prolonged exposure to high intensity

noise may cause hearing loss.

10.

Keep bystanders a safe distance away from

work area. Anyone entering the work area must

wear personal protective equipment.

Fragments

of workpiece or of a broken wheel may fly away and

cause injury beyond immediate area of operation.

11. Hold power tool by insulated gripping

surfaces only, when performing an operation

where the wheel may contact hidden wiring or

its own cord. Wheel contacting a "live" wire may

make exposed metal parts of the power tool "live"

and shock the operator.

12. Position the cord clear of the spinning wheel.

If you lose control, the cord may be cut or

snagged and your hand or arm may be pulled into

the spinning wheel.

13. Never lay the power tool down until the wheel

has come to a complete stop. The spinning

wheel may grab the surface and pull the power

tool out of your control.

14. Do not run the power tool while carrying it at

your side. Accidental contact with the spinning

wheel could snag your clothing, pulling the wheel

into your body.

15. Regularly clean the power tool's air vents. The

motor's fan will draw the dust inside the housing

and excessive accumulation of powdered metal

may cause electrical hazards.

16. Do not operate the power tool near flammable

materials. Sparks could ignite these materials.

17. Never attempt to cut with the tool held upside

down in a vise. This can lead to serious

accidents, because it is extremely dangerous.

18. Some material contains chemicals which may

be toxic. Take caution to prevent dust

inhalation and skin contact. Follow material

supplier safety data.

Kickback and related warnings

Kickback is a sudden reaction to a pinched or snagged

rotating wheel. Pinching or snagging causes rapid

stalling of the rotating wheel which in turn causes the

uncontrolled power tool to be forced in the direction

opposite of the wheel's rotation at the point of the

binding.

For example, if a wheel is snagged or pinched by the

workpiece, the edge of the wheel that is entering into

the pinch point can dig into the surface of the material

causing the wheel to climb out or kick out. The wheel

may either jump toward or away from the operator,

depending on direction of the wheel's movement at the

point of pinching. The wheels may also break under

these conditions.

Kickback is the result of power tool misuse and/or

incorrect operating procedures or conditions and can be

avoided by taking proper precautions as given below.

1. Maintain a firm grip on the power tool and

position your body and arm to allow you to

resist kickback forces. Always use auxiliary

handle, if provided, for maximum control over

kickback or torque reaction during start-up.

The operator can control torque reactions or

kickback forces, if proper precautions are taken.

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Makita 4107RH Instruction Manual Page 4

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