Makita 4105KB, Instruction Manual

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11. Hold the power tool by insulated gripping sur-

faces only, when performing an operation where
the cutting accessory may contact hidden wiring
or its own cord.

 Cutting accessory contacting a

“live” wire may make exposed metal parts of the
power tool “live” and could give the operator an elec-
tric shock.

12. Position the cord clear of the spinning acces-

sory.

 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 acces-

sory 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

accessory could snag your clothing, pulling the
accessory 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. Do not use accessories that require liquid cool-

ants.

 Using water or other liquid coolants may result

in electrocution or shock.

Kickback and related warnings

Kickback is a sudden reaction to a pinched or snagged
rotating wheel. Pinching or snagging causes rapid stall-
ing of the rotating wheel which in turn causes the uncon-
trolled power tool to be forced in the direction opposite of
the wheel’s rotation at the point of the binding.
For example, if an abrasive 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 mate-
rial 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. Abrasive wheels may also break under
these conditions.
Kickback is the result of power tool misuse and/or incor-
rect 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 line with the
rotating wheel. 

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 snag-
ging 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, segmented diamond wheel with a
peripheral gap greater than 10 mm or toothed
saw blade. 

Such blades create frequent kick-

back and loss of control.

f)

Do not “jam” the wheel or apply excessive
pressure. Do not attempt to make an exces-
sive depth of cut. 

Overstressing the wheel

increases the loading and susceptibility to twist-
ing or binding of the wheel in the cut and the
possibility of kickback or wheel breakage.

g)

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 wheel from the cut
while the wheel is in motion otherwise kick-
back may occur. 

Investigate and take corrective

action to eliminate the cause of wheel binding.

h)

Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed
and carefully re-enter the cut. 

The wheel may

bind, walk up or kickback if the power tool is
restarted in the workpiece.

i)

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.

j)

Use extra caution when 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.

18. Before using a segmented diamond wheel, make

sure that the diamond wheel has the peripheral
gap between segments of 10 mm or less, only
with a negative rake angle.  

Additional Safety Warnings:
19. Never attempt to cut with the tool held upside

down in a vise. This can lead to serious acci-
dents, because it is extremely dangerous.

20. Some material contains chemicals which may be

toxic. Take caution to prevent dust inhalation
and skin contact. Follow material supplier safety
data.

SAVE THESE INSTRUCTIONS.

WARNING:
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to safety rules for the subject product. MISUSE or
failure to follow the safety rules stated in this instruc-
tion manual may cause serious personal injury.

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on the
tool.