Instruction Manual

GS 461
English
5
WARNING
Even if wet cutting at the recommended
water pressure, an operator who is
working with the machine for more than
two hours in one day, along with any
bystanders, should always wear a
NIOSH-approved respirator that is rated
for the material being cut and
appropriate for worksite-specific
conditions.
Consult your employer for information
relating to the respirator needed for the
material you are cutting and your
worksite-specific conditions. Your
employer is likely to have in place an
OSHA-required respiratory protection
program and can provide information
regarding the type and level of
respiratory protection needed for your
worksite. Information also is available
from OSHA at www.OSHA.gov.
For additional details and warnings on
this subject, see information under
“Working Conditions” in this instruction
manual.
THE POWER TOOL
For illustrations and definitions of the
parts of the concrete cutter, see the
chapter "Main Parts."
WARNING
Never modify a concrete cutter in any
way. Only STIHL branded parts and
cutting attachments expressly approved
by STIHL for use with the specific STIHL
concrete cutter model are
recommended. Although certain other
parts or attachments may be useable
with the STIHL powerhead, their use
may, in fact, be extremely dangerous.
If this tool is subjected to unusually high
loads for which it was not designed (e.g.
heavy impact or a fall), always check
that it is in good condition before
continuing work. Check in particular that
the fuel system is tight (no leaks) and
that the controls and safety devices are
working properly. Do not continue
operating this machine if it is damaged.
In case of doubt, have it checked by your
STIHL servicing dealer.
Diamond abrasive chain
The diamond abrasive chain, guide bar
and chain sprocket must match each
other and your concrete cutter.
If chains are used that are not STIHL
branded, over-aggressive cutting while
using the tip of the bar cannot be ruled
out, i.e., when exposed leading edges of
the diamond segments hammer against
the workpiece. This can damage the
chain and other components and may
lead to increased reactive forces
(kickback). See the section entitled
"Reactive Forces."
Only use diamond abrasive chain for the
specified materials, observe diamond
abrasive chain codes.
Always cut with water, see the chapter
entitled "Sample applications."
Before fitting used diamond abrasive
chains, check that they are not cracked,
chipped or have damaged or missing
segments; check also that there are no
signs of overheating (a bluish
discoloration), which could mean an
increased risk of breakage. Never use
diamond abrasive chains that have any
of these conditions. Consult your
servicing dealer.
THE USE OF THE POWER TOOL
Transporting the Power Tool
WARNING
To reduce the risk of injury from
diamond abrasive chain contact, never
carry or transport your power tool with
the diamond abrasive chain moving.
It may be carried only in a horizontal
position. Grip the front handle in a
manner that the machine is balanced
To reduce the risk of seri
-
ous or fatal respiratory
disease or other illness,
the operator and any
bystanders should
always wear a respirator
that is approved by
NIOSH for the material
being cut and appropriate
for worksite-specific con
-
ditions anytime wet
cutting at the water pres
-
sure recommended in
this instruction manual
cannot be confirmed. The
respirator must have an
Assigned Protection Fac
-
tor sufficient to provide
the level of respiratory
protection needed for the
material being cut and
worksite-specific
conditions.