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Working safely with cut-off machines
English
4
Dust may collect on the engine unit,
particularly around the carburetor. If the
dust is soaked with gasoline, it may
catch fire. For this reason, ensure that
the dust is always removed.
Various cut-off machines may be
equipped with various filler caps:
Bayonet filler cap
Never use a tool to open or close the
bayonet filler cap. This could damage
the cap and cause fuel to leak out.
Secure the bayonet filler cap tightly after
refueling.
Threaded filler cap
This helps reduce the risk of unit
vibrations causing an incorrectly
tightened filler cap to loosen or come off
and spill quantities of fuel.
Cut-off machine, spindle bearing
A faultless spindle bearing ensures the
radial and axial runout of the diamond
cutting wheel – have this checked by a
dealer if necessary.
Cutting wheels
Selecting cutting wheels
Cutting wheels must be approved for
freehand cutting. Do not use any other
cutting wheels or attachments -
risk of
accidents!
Cutting wheels are suitable for varying
materials: Observe the cutting wheel
codes.
STIHL generally recommends wet
cutting.
Check spindle hole for damage. Do not
use cutting wheels with a damaged
spindle hole –
Risk of accident!
Before fitting a used cutting wheel,
check that it is not cracked, chipped, 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 bore is not damaged.
Never use a chipped, cracked or warped
cutting wheel.
Substandard and/or unapproved
diamond cutting wheels can shimmy
during cutting. This shimmying can
cause such diamond cutting wheels to
be abruptly braked or become stuck in
the cut –
Danger of kickback!
Kickback can result in fatal cuts!
Diamond cutting wheels that shimmy
constantly or even only intermittently
must be replaced immediately.
Never straighten diamond cutting
wheels.
Never use a cutting wheel that has been
dropped – a damaged cutting wheel may
break –
risk of accident!
Observe the use-by date where resin
cutting wheels are concerned.
Mounting cutting wheels
Check the cut-off machine spindle, do
not use cut-off machines with damaged
spindles –
risk of accident!
Note the arrows indicating the direction
of rotation on diamond cutting wheels.
Check for fuel leakage
while refueling and during
operation. Never start the
engine if fuel has been
spilled or is leaking –
Fatal burns may result!
Close the threaded filler
cap as tightly as possible
after refueling.
Observe the outer diame-
ter of the cutting wheel.
The diameter of the spin-
dle hole of the cutting
wheel and the shaft of the
cut-off machine must
match.
The permissible speed of
the cutting wheel must be
equal to or greater than
the maximum spindle
speed of the cut-off
machine! Refer to the
chapter "Specifications".