TS 410, TS 420
English
9
the wheel. Never attempt to start the cut-
off machine when the abrasive wheel is 
in a cut.
Once the engine has started, 
immediately blip the throttle trigger, 
which should release the starting throttle 
lock and allow the engine to slow down 
to idle.
WARNING
When you pull the starter grip, do not 
wrap the starter rope around your hand. 
Do not allow the grip to snap back, but 
guide the starter rope slowly back to 
permit the rope to rewind properly. 
Failure to follow this procedure may 
result in injuries to hand or fingers and 
may damage the starter mechanism.
Important Adjustments
At correct idle speed, the wheel should 
not turn. For directions to adjust idle 
speed, see the appropriate section of 
your instruction manual.
WARNING
Do not use a cut-off machine with 
incorrect idle speed adjustment. The 
rotating wheel may cause injury. If you 
cannot obtain the correct setting, have 
your STIHL dealer check your cut-off 
machine and make proper adjustments 
or repairs.
Working Conditions
Operate the cut-off machine under good 
visibility and daylight conditions only.
Wearing of hearing protection reduces 
sound perception. Be alert not to miss 
voice signals from co-workers. Keep 
within calling distance to other persons 
who may assist in case of emergency.
WARNING
WARNING
Use of this product to cut masonry, 
concrete, metal and other materials can 
generate dust and fumes containing 
chemicals known to cause serious or 
fatal injury or illness, such as respiratory 
disease, cancer, birth defects or other 
reproductive harm. If you are unfamiliar 
with the risks associated with the 
particular material being cut, review the 
material safety data sheet and/or consult 
your employer, the material 
manufacturer/supplier, governmental 
agencies such as OSHA and NIOSH 
and other sources on hazardous 
materials. California and some other 
authorities, for instance, have published 
lists of substances known to cause 
cancer, reproductive toxicity, etc. 
Control dust and fumes at the source 
where possible.
In this regard use good work practices 
and follow the recommendations of the 
manufacturer/supplier, OSHA/NIOSH, 
and occupational and trade 
associations. A water attachment kit is 
provided with your cut-off machine and 
should be used to reduce dust whenever 
wet cutting is feasible. For dust 
suppression purposes, the flow rate 
should be at least 0.6 liters (20 fl.oz) of 
water per minute. If wet cutting at the 
recommended flow rate is not utilized, 
the operator and any bystanders should 
always wear a respirator approved by 
NIOSH/MSHA for the material being cut. 
See the section on "Respiratory 
Protection" in the chapter "Sample 
Applications" in the instruction manual. 
Even if wet cutting at the recommended 
flow rate, an operator who is actively 
cutting for more than two hours in one 
day should wear at least a NIOSH-
approved disposable respirator. Consult 
and follow any federal, state or local 
laws or regulations with respect to dry 
and wet cutting.
WARNING
Cutting masonry, concrete and other 
materials with silica in their composition 
may give off dust containing crystalline 
silica. Silica is a basic component of 
As soon as the engine is 
running, this product gen-
erates toxic exhaust 
fumes containing chemi-
cals, such as unburned 
hydrocarbons (including 
benzene) and carbon 
monoxide, that are 
known to cause respira-
tory problems, cancer, 
birth defects, or other 
reproductive harm. Some 
of the gases (e.g. carbon 
monoxide) may be color-
less and odorless. To 
reduce the risk of serious 
or fatal injury/illness from 
inhaling toxic fumes, 
never run the machine 
indoors or in poorly venti-
lated locations. Ensure 
proper ventilation when 
working in trenches or 
other confined areas.