TS 410, TS 420
English
10
When using cutting wheels made from 
synthetic resin which are suitable for wet 
cuts only, make wet cuts only – for 
example, use the STIHL water 
connector.
When using abrasive wheels made from 
synthetic resin, which are suitable for dry 
cuts only, make dry cuts only. If 
composite resin abrasive wheels of this 
type become wet, their cutting 
performance is reduced and they 
become dull. If composite resin abrasive 
wheels of this type become wet while 
working (e.g., due to puddles or water in 
pipes), do not increase the cutting 
pressure, but continue working with the 
same pressure – risk of breakage! Use 
up such composite resin abrasive 
wheels immediately.
Cut-off machine cart
Clear a path for the cut-off machine cart. 
If the cart is pushed over objects, the 
abrasive wheel may become wedged in 
the cut and shatter!
Vibrations
Prolonged use of the power tool may 
result in vibration-induced circulation 
problems in the hands (whitefinger 
disease).
No general recommendation can be 
given for the length of usage because it 
depends on several factors.
The period of usage is prolonged by:
– Hand protection (wearing warm 
gloves)
– Work breaks
The period of usage is shortened by:
– Any personal tendency to suffer 
from poor circulation (symptoms: 
frequently cold fingers, tingling 
sensations).
– Low outside temperatures.
– The force with which the handles 
are held (a tight grip restricts 
circulation).
Continual and regular users should 
monitor closely the condition of their 
hands and fingers. If any of the above 
symptoms appear (e.g. tingling 
sensation in fingers), seek medical 
advice.
Maintenance and repairs
The machine must be serviced regularly. 
Do not attempt any maintenance or 
repair work not described in the 
Instruction Manual. All other work should 
be carried out by a servicing dealer.
STIHL recommends that maintenance 
and repair work be carried out only by 
authorized STIHL dealers. STIHL 
dealers receive regular training and are 
supplied with technical information.
Use only high-quality replacement parts, 
in order to avoid the risk of accidents or 
damage to the machine. Contact a 
dealer if in doubt.
STIHL recommends the use of genuine 
STIHL spare parts. Such parts have 
been optimized for the machine and the 
user's requirements.
Before starting any maintenance or 
repair work and before cleaning the 
machine, always stop the engine and 
disconnect the spark plug boot – risk of 
injury if the engine starts up 
inadvertently! – Exception: adjustment 
of carburetor and idle speed.
To reduce the risk of fire due to ignition 
outside the cylinder, move the slide 
control / stop switch to STOPor0 before 
turning the engine over on the starter 
with the spark plug boot removed or the 
spark plug unscrewed.
Do not service or store the machine near 
a naked flame – risk of fire due to the 
fuel.
Check fuel cap regularly for tightness.
Use only spark plugs that are in perfect 
condition and have been approved by 
STIHL – see Specifications.
Inspect ignition lead (insulation in good 
condition, secure connection).
Check that the muffler is in perfect 
working condition.
Do not use the machine if the muffler is 
damaged or missing - risk of fire! – 
Hearing damage!
Never touch a hot muffler – risk of burns!
Check the rubber buffers underneath 
the machine - the housing must not rub 
against the ground - risk of damage!
The condition of the antivibration 
elements influences vibration behavior – 
inspect antivibration elements 
periodically.
Maintenance, replacement, or repair of 
the emission control devices and 
systems may be performed by any 
nonroad engine repair establishment or 
individual. However, if you make a 
warranty claim for a component which 
has not been serviced or maintained