TS 410, TS 420
English
5
Cut-off machine, spindle bearing
Correct spindle bearings ensure the 
concentricity and axial running of the 
diamond-tipped abrasive wheel – if 
necessary, get it checked by an 
approved dealer.
Abrasive wheels
Selecting the abrasive wheels
Abrasive wheels must be approved for 
hand-held cutting. Do not use other 
cutting wheels and attachments – risk of 
accident!
Abrasive wheels are suitable for 
different materials: Observe the 
identification of the abrasive wheels.
STIHL generally recommends wet 
cutting.
Check the spindle hole for damage. Do 
not use cutting wheels with a damaged 
spindle hole – risk of accident!
Before fitting a used abrasive wheel, 
check that it is not cracked, chipped, 
undercut or uneven, and does not 
display any signs of core fatigue or 
overheating (discoloration); check also 
that there are no damaged or missing 
segments and that the spindle hole is 
not damaged.
Never use cracked, chipped or bent 
abrasive wheels.
Substandard and/or unapproved 
diamond abrasive wheels can shimmy 
during cutting. This shimmying can 
cause such diamond abrasive wheels to 
be abruptly braked or become stuck in 
the cut – Danger of kickback! Kickback 
can result in fatal injuries! Diamond 
abrasive wheels that shimmy constantly 
or even only intermittently must be 
replaced immediately.
Never straighten diamond abrasive 
wheels.
Do not use a cutting wheel which has 
fallen to the ground – damaged cutting 
wheels may break – risk of accident!
Observe the expiration date where resin 
abrasive wheels are concerned.
Fitting abrasive wheels
Inspect the spindle of the cut-off 
machine. Do not use a machine if the 
spindle is damaged – risk of accident!
Note the arrows indicating the direction 
of rotation on diamond abrasive wheels.
Position the front pressure plate – 
tighten up the clamping screw – rotate 
the cutting wheel by hand and take a 
sight check for concentricity and axial 
running.
Storing abrasive wheels
Store cutting wheels in a dry and frost-
free place, on an even surface, at 
constant temperature – risk of breakage 
and splintering!
Always protect the abrasive wheel 
against sudden contact with the ground 
or objects.
Before starting
Inspect the cut-off machine to check that 
it is in full working order – observe the 
respective chapters in the instruction 
manual:
– Check the fuel system for leaks, 
especially the visible parts, e.g., 
filler cap, hose connections, manual 
fuel pump (only on machines with a 
manual fuel pump). In case of 
leakage and damage, do not start 
the engine – risk of fire! Have the 
machine serviced by a servicing 
dealer before using it.
– The abrasive wheel must be 
suitable for the material to be cut. It 
must be in good condition and fitted 
correctly (direction of rotation, 
secure).
– Inspect the cutting wheel guard for 
tight seat – if loose, contact your 
specialist dealer.
Observe the outer diame
-
ter of the abrasive wheel.
Spindle hole diameter of 
the abrasive wheel and 
shaft of cut-off machine 
must match.
The permissible speed of 
the abrasive wheel must 
be equal to or greater 
than the maximum spin
-
dle speed of the cut-off 
machine. – Refer to the 
chapter "Specifications".