Stihl TS 440 Instruction Manual page 8

English
WARNING
Inspect the composite
cutting wheel frequently
and replace immediately
if it is cracked or warped.
Cracked or warped
wheels may shatter or
break and cause serious
or fatal personal injury.
Out-of-round or
unbalanced wheels
increase vibration,
reduce the service life of
the cut-off machine and
may result in loss of
control.
Composite cutting wheels are heat
sensitive. Always store your cut-off
machine in a place where a composite
cutting wheel is not exposed to direct
sunlight or other sources of heat. Store
spare composite cutting wheels flat on a
level surface in a dry place where there
is no risk of frost damage. Failure to
follow these directions may cause the
wheel to shatter or crack in use, causing
serious or fatal injury.
STIHL has only developed one
composite cutting wheel suitable for use
on the TS 440. It is rated for dry cutting
metal only. Composite cutting wheels
designed for use on traditional, high-
speed cut-off machines should not be
used on the TS 440. They are not
designed for the slower cutting speeds
and higher torque of the TS 440 and will
wear prematurely and perform poorly.
Never use a composite wheel not rated
for the material to be cut.
6
Diamond Cutting Wheels
WARNING
Some diamond cutting wheels that are
not STIHL branded utilize poor quality
steel cores, are not properly hardened or
tensioned, or have other design or
manufacturing defects that can result in
wheel breakage, thrown segments and
other safety issues, including wheel
wobble. Wheels that wobble during use
can result in reactive forces and present
other safety issues that could result in
loss of control and severe personal
injury or death. Wobbling, for example,
can lead to a severe binding of the wheel
in the cut, that, under certain
circumstances, can then result in
serious or fatal injury from kickback or
other reactive forces. See the section
"Reactive Forces including Kickback" in
this instruction manual. Never use a
wheel that wobbles or that has ever
wobbled. Even though such a wheel
may temporarily cease to wobble, e.g., if
run without load, it will always be prone
to wobble again under certain
conditions. Replace it immediately
before further use of the cut-off machine.
Diamond cutting wheels generally have
a better cutting performance than
composite cutting wheels. Diamond
cutting wheels have steel cores and
cutting segments embedded with
diamonds attached to their outer edges.
Properly rated diamond cutting wheels
can be used for cutting concrete,
asphalt, natural stone, clay pipe, brick
and the like. STIHL also offers diamond
cutting wheels for cutting ductile iron and
some structural steel. They are not,
however, suitable for cutting all metals
or other materials, including wood or
plastic. See the chapter "Diamond
Cutting Wheels" in this instruction
manual for more details regarding the
type of materials that can be cut with
properly rated STIHL diamond cutting
wheels.
WARNING
Wet or dry cutting is possible with the
appropriate diamond cutting wheel. A
water attachment kit is mounted on your
STIHL cut-off machine. Wet cutting
reduces dust and reactive forces and is
recommended whenever possible. See
the chapter "Sample Applications" in this
instruction manual.
WARNING
Do not remount a used diamond cutting
wheel without first inspecting it for
under-cutting, flatness, core fatigue or
damage, segment damage or loss, signs
of overheating (discoloration) and
possible arbor hole damage. See the
chapter "Diamond Cutting Wheels."
Check the wheel for cracks and make
sure that no pieces have broken off the
wheel before use. Never use any wheel,
diamond or composite, that has been
damaged.
Always mount the diamond cutting
wheel so that the arrow on the wheel
points in the direction of the rotation of
the spindle.
TS 440