Manual Hikoki G3613DE (page 10 of 288) (All languages)

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e) Support panels or any oversized workpiece to

minimize the risk of wheel pinching and kickback.

Large workpieces tend to sag under their own weight.

Supports must be placed under the workpiece near the

line of cut and near the edge of the workpiece on both

sides of the wheel.

f) Use extra caution making a “pocket cut” into

existing walls or other blind areas.

The protruding wheel may cut gas or water pipes,

electrical wiring or objects that can cause kickback.

g) Do not attempt to do curved cutting.

Overstressing the wheel increases the loading and

susceptibility to twisting or binding of the wheel in the cut

and the possibility of kickback or wheel breakage, which

can lead to serious injury.

GENERAL SAFETY INSTRUCTIONS

FOR CORDLESS DISC GRINDERS

– Attach the side handle ﬁ rmly, hold the housing and the

side handle with both hands, and support the tool body

securely. (Fig. 2)

– 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;

– Inspect the grinding wheel before use, do not use

chipped, cracked or otherwise defective products;

– Ensure that mounted wheels and points are ﬁ tted 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 seconds 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 ﬁ tted with threaded hole wheel,

ensure that the thread in the wheel is long enough to

accept the spindle length;

– 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 ﬂ ammable

substances;

– Ensure that ventilation openings are kept clear when

working in dusty conditions, if it should become

necessary to clear dust, ﬁ rst disconnect the tool from

the mains supply (use non metallic objects) and avoid

damaging internal parts;

– Always use eye and ear protection. Other personal

protective equipment such as dust mask, gloves, helmet

and apron should be worn;

– Pay attention to the wheel that continues to rotate after

the tool is switched oﬀ .

– When using dual-purpose (combined grinding and

cut-oﬀ wheels), use only the type A wheel guard.

(See page 275)

– When using a type A wheel guard for lateral grinding,

the guard may interfere with the workpiece causing poor

control.

– When using a type B wheel guard for cutting-oﬀ

operations with bonded cut-oﬀ wheels, there is an

increased risk of exposure to emitted sparks and

particles, as well as exposure to wheel fragments in the

event of a wheel burst.

– When using a type A, B wheel guard for cutting-oﬀ

operations or lateral grinding in concrete or masonry,

there is an increased risk of exposure to dust and loss of

control resulting in kickback.

– Do not use any segmented diamond cut-oﬀ wheels with

segment slits >10 mm. Only negative segment cutting

angles are permitted.

– The workpiece must lay ﬂ at and be secured against

slipping, e.g. using clamps. Large workpieces must be

suﬃ ciently supported.

– Observe the speciﬁ cations of the tool or accessory

manufacturer. Protect wheels from grease or impact.

– Accessories must be stored and handled with care in

accordance with the manufacturer's instructions.

WARNING

– When using a cutting-oﬀ wheel, be sure to attach a type

A wheel guard.

– When using a grinding wheel, be sure to attach a type B

wheel guard.

– For safety reasons, only use the wheel guard provided

for the respective accessory. Using an incorrect wheel

guard can lead to loss of control and serious injuries.

See also page 275.

ADDITIONAL SAFETY WARNINGS

1. Ensure that the depressed center wheel to be utilized is

the correct type and free of cracks or surface defects.

Also ensure that the depressed center wheel is properly

mounted and the wheel nut is securely tightened.

2. Conﬁ rm that the push button is disengaged by pushing

push button two or three times before switching the

power tool on.

3. To prolong the life of the machine and ensure a ﬁ rst

class ﬁ nish, it is important that the machine should not

be overloaded by applying too much pressure. In most

applications, the weight of the machine alone is suﬃ cient

for eﬀ ective grinding. Too much pressure will result in

reduced rotational speed, inferior surface ﬁ nish, and

overloading which could reduce the life of the machine.

4. The wheel continues to rotate after the tool is switched

oﬀ .

After switching oﬀ the machine, do not put it down until

the depressed center wheel has come to a complete

stop. Apart from avoiding serious accidents, this

precaution will reduce the amount of dust and swarf

sucked into the machine.

5. When the machine is not use, the power source should

be disconnected.

6. Be sure to switch OFF and pull out the battery to avoid

a serious accident before the depressed center wheel is

assembling and disassembling.

7. Be careful of brake kickback.

This cordless disc grinder 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.

8. If you notice that the unit is generating unusually high

temperatures, operating poorly, or making abnormal

noises, immediately stop using and shut oﬀ the power

switch. Request an inspection and repair from the dealer

where you purchased the unit or a HiKOKI Authorized

Service Center.

Continuing to use while operating abnormally might

cause injuries.

9. If the unit is mistakenly dropped or strikes another object,

make a thorough check of the unit for cracks, breakage

or deformation, etc.

Injuries might occur if the unit has cracks, breakage or

deformation.

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Hikoki G3613DE Manual

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