16 Repairing
► Detach the extension cable connector from the
mains plug of the lawn mower.
► Upend the lawn mower.
► Remove the blade.
► Sharpen the blade. Observe the sharpening
angle and cool the blade,
Bluing of the blade during sharpening is not
permitted.
► Attach the blade.
► If anything is unclear: consult a STIHL special‐
ist dealer.
17 Troubleshooting
17.1
Remedying Lawn Mower Faults
Fault
The lawn mower
does not start when
switched on.
The lawn mower
stops during opera‐
tion.
0478-121-9926-A
18.2.
Cause
The plug or extension cable connector
are not plugged in.
The circuit breaker (fuse) or the resi‐
dual current device tripped. The circuit
is electrically overloaded or defective.
The fuse protection of the socket is too
low.
The cross section of the extension
cable is incorrect.
The extension cable is too long.
The engine is overheated.
The resistance at the blade is too
great.
The area around the blade is blocked. ► Clean the lawn mower,
GB country-specific version: The fuse
in the plug is faulty.
The plug or extension cable connector
are no longer plugged in.
The circuit breaker (fuse) or the resi‐
dual current device tripped. The circuit
is electrically overloaded or defective.
The fuse protection of the socket is too
low.
The overload protection has triggered. ► Allow the lawn mower to cool down.
16 Repairing
16.1
Repairing the Lawn Mower
The user should not repair the lawn mower or
blade themselves.
► If the lawn mower or blade is damaged: do not
use the lawn mower or blade and consult a
STIHL specialist dealer.
► If warning signs are illegible or damaged: have
the warning signs replaced by a STIHL spe‐
cialist dealer.
Remedy
► Insert the plug or extension cable
connector,
► Find and fix the cause of the circuit
breaker or RCD tripping. Insert the
circuit breaker (fuse) or residual cur‐
rent device.
► Switch other power consumers in
the same circuit off.
► Insert the plug of the extension
cable into a correctly fused socket,
18.
► Use an extension cable with an ade‐
quate cable cross section,
► Use an extension cable with the cor‐
rect length,
► Clean the lawn mower,
► Allow the lawn mower to cool down.
► Set a higher cutting height,
► Switch the lawn mower on in lower
grass.
► Replace the fuse in the plug.
► Insert the plug or extension cable
connector,
► Find and fix the cause of the circuit
breaker or RCD tripping. Insert the
circuit breaker (fuse) or residual cur‐
rent device.
► Switch other power consumers in
the same circuit off.
► Insert the plug of the extension
cable into a correctly fused socket,
18.
Cooling time up to 10 minutes.
► Clean the lawn mower,
► Guide the lawn mower more slowly.
► Set a higher cutting height,
English
7.
18.
18.
14.
10.2.
14.
7.
14.
10.2.
35