Ryobi G-2240, Owner'S Operating Manual

Page: 5 / 16

4
IMPORTANT SAFETY INSTRUCTIONS
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.
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.
Always use undamaged wheel flanges that are of
correct size and shape for your selected wheel.
Proper wheel fl anges support the wheel thus
reducing the possibility of wheel breakage. Flanges
for cut-off wheels may be different from grinding
wheel flanges.
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.
KICKBACK AND RELATED WARNINGS
Kickback is a sudden reaction to a pinched or
snagged rotating wheel, backing pad, brush or any
other accessory.
Pinching or snagging causes rapid stalling of the
rotating accessory which in turn causes the
uncontrolled power tool to be forced in the direction
opposite of the accessory’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 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.
Abrasive 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.
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 startup. 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.
f. 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 and sparks
that could ignite clothing.
ANGLE GRINDER SAFETY PRECAUTIONS
Check that the speed marked on the grinding
wheel is equal to or greater than the rated speed of
the tool.
Ensure that the dimensions of the grinding wheel
are compatible with the tool and that the wheel fits
the spindle.
Grinding wheels must be stored in a dry place.
Do not store objects on top of the grinding wheels.
Grinding wheels must not be used for any
operation other than grinding.
Inspect the grinding wheel before use to ensure
that it is not chipped or cracked. Chips or cracks
can cause the wheels to shatter, resulting in
possible serious injury.
Ensure that the grinding wheel is correctly mounted
and tightened before use and run the tool at no
load speed for 30 seconds in a safe position.