TS 410, TS 420
English
24
STIHL cut-off machines may be 
equipped with an electronic water 
control system.
The electronic water control makes it 
possible to feed the optimum amount of 
water to the cutting wheel. No water is 
fed to the cutting wheel during idling or 
when the machine is turned off.
Before starting work
N Familiarize yourself with the control 
panel and sequence of motions 
while the engine is switched off.
N All of the control panel buttons can 
be reached with the thumb of the 
right hand while the right hand 
remains on the rear handle.
N The left hand always remains on the 
handlebar.
Control Panel
When the engine is running, it is 
possible to activate/deactivate the 
electronic water control and adjust the 
water flow.
1 Button (+):
activates the electronic water 
control or increases water flow to 
cutting wheel.
2 Button (–):
activates the electronic water 
control or decreases water flow to 
cutting wheel.
3 Deactivates electronic water 
control; no water is fed to the cutting 
wheel.
Using the Electronic Water Control
N Start engine: see the chapter 
"Starting/Stopping the Engine."
N Briefly push the (+) button or (–) 
button with the thumb of the right 
hand. The right hand must always 
remain on the rear handle while 
doing so; the left hand must always 
remain on the handlebar. No water 
is fed to the cutting wheel during 
idling.
During use, the set amount of water is 
fed to the cutting wheel.
N Adjust water flow if necessary – to 
do so, briefly push the (+) button or 
(–) button with the thumb of the right 
hand until the correct water quantity 
is attained at one of the settings. 
The right hand must always remain 
on the rear handle while doing so; 
the left hand must always remain on 
the handlebar.
The water pressure will affect the actual 
amount of water flow at any setting. It 
may be necessary to use a higher 
setting with a lower water pressure, e.g., 
when using a pressurized or gravity 
water tank. For proper dust suppression 
and cutting performance, always make 
sure that the water flow is within the 
proper range, as described in the 
chapter "Sample Applications."
If the cut-off machine is idling after use, 
no more water will be fed to the cutting 
wheel – the electronic water control, 
however, remains activated. With 
continued use, the last setting will be 
automatically re-entered.
If the engine is stopped and restarted, 
the electronic water control is switched 
off.
Electronic water control