Manual Hitachi G13SQ (page 7 of 56) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

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.

a) 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.

b) Never place your hand near the rotating

accessory.

Accessory may kickback over your hand.

c) Do not position your body in the area where

power tool will move if kickback occurs.

Kickback will propel the tool in direction opposite

to the wheel’s movement at the point of

snagging.

d) Use special care when working corners, sharp

edges etc. Avoid bouncing and snagging the

accessory.

Corners, sharp edges or bouncing have a

tendency to snag the rotating accessory and

cause loss of control or kickback.

e) Do not attach a saw chain woodcarving blade

or toothed saw blade.

Such blades create frequent kickback and loss

of control.

SAFETY WARNINGS SPECIFIC FOR

GRINDING AND ABRASIVE CUTTING-OFF

OPERATIONS

a) Use only wheel types that are recommended for

your power tool and the specific guard designed

for the selected wheel.

Wheels for which the power tool was not

designed cannot be adequately guarded and are

unsafe.

b) The guard must be securely attached to the

power tool and positioned for maximum safety,

so 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.

c) Wheels must be used only for recommended

applications. For example: do not grind with the

side of cut-off wheel.

Abrasive cut-off wheels are intended for

peripheral grinding, side forces applied to these

wheels may cause them to shatter.

d) Always use undamaged wheel flanges that are

of correct size and shape for your selected wheel.

Proper wheel flanges support the wheel thus

reducing the possibility of wheel breakage.

Flanges for cut-off wheels may be different from

grinding wheel flanges.

e) Do not use worn down wheels from larger

power tools.

Wheel intended for larger power tool is not

suitable for the higher speed of a smaller tool

and may burst.

ADDITIONAL SAFETY WARNINGS SPECIFIC

FOR ABRASIVE CUTTING-OFF OPERATIONS

a) Do not “jam” the cut-off wheel or apply

excessive pressure. Do not attempt to make an

excessive depth of cut.

Overstressing the wheel increases the loading

and susceptibility to twisting or blinding of the

wheel in the cut and the possibility of kickback

or wheel breakage.

b) Do not position your body in line with and

behind the rotating wheel.

When the wheel, at the point of operation, is

moving away from your body, the possible

kickback may propel the spinning wheel and the

power tool directly at you.

c) When wheel is binding or when interrupting a

cut for any reason, switch off the power tool

and hold the power tool motionless until the

wheel comes to a complete stop. Never attempt

to remove the cut-off wheel from the cut while

the wheel is in motion otherwise kickback may

occur.

Investigate and take corrective action to eliminate

the cause of wheel binding.

d) Do not restart the cutting operation in the

workpiece. Let the wheel reach full speed and

carefully reenter the cut.

The wheel may bind, walk up or kickback if the

power tool is restarted in the workpiece.

GENERAL SAFETY INSTRUCTIONS FOR

GRINDERS

– Check that speed marked on the wheel is equal to

or greater than the rated speed of the grinder;

– Ensure that the wheel dimensions are compatible

with the grinder;

– Abrasive wheels shall be stored and handled with

care in accordance with manufacturer’s instructions;

– Inspect the grinding wheel before use, do not use

chipped, cracked or otherwise defective products;

– Ensure that mounted wheels and points are fitted

in accordance with the manufacturer’s instructions;

– Ensure that blotters are used when they are provided

with the bonded abrasive product and when they

are required;

– Ensure that the abrasive product is correctly mounted

and tightened before use and run the tool at no-

load for 30 s in a safe position, stop immediately

if there is considerable vibration or if other defects

are detected. If this condition occurs, check the

machine to determine the cause;

– If a guard is equipped with the tool never use the

tool without such a guard;

– Do not use separate reducing bushings or adapters

to adapt large hole abrasive wheels;

– For tools intended to be fitted with threaded hole

wheel, ensure that the thread in the wheel is long

enough to accept the spindle length;

– Check that the work piece is properly supported;

– Do not use cutting off wheel for side grinding;

– Ensure that sparks resulting from use do not create

a hazard e.g. do not hit persons, or ignite flammable

substances;

01Eng_G10SQ_WE 2/4/10, 8:37 AM6

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Hitachi G13SQ Manual

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