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Fault
LEDs on the
battery
Cause
Remedy
► If 3 LEDs still flash red: do not use the
lawn mower and consult a STIHL spe‐
cialist dealer.
3 LEDs illumi‐
nate red.
The lawn mower is
too warm.
► Pull out the activation key.
► Remove the battery.
► Allow the lawn mower to cool down.
4 LEDs flash
red.
There is a fault in the
battery.
► Remove the battery and fit it again.
► Switch the lawn mower on.
► If 4 LEDs still flash red: do not use the
battery and consult a STIHL specialist
dealer.
The electrical connec‐
tion between the lawn
mower and battery
has been interrupted.
► Pull out the activation key.
► Remove the battery.
► Clean the electric contacts in the battery
compartment.
► Insert the activation key.
► Fit the battery.
The lawn mower or
battery are damp.
► Pull out the activation key.
► Remove the battery.
► Clean the lawn mower.
► Allow the lawn mower or battery to dry.
The resistance at the
blade is too great.
► Set a higher cutting height.
► Switch the lawn mower on in lower
grass.
The area around the
blade is blocked.
► Clean the lawn mower.
The lawn mower
stops during ope‐
ration.
3 LEDs illumi‐
nate red.
The lawn mower is
too warm.
► Pull out the activation key.
► Remove the battery.
► Allow the lawn mower to cool down.
► Clean the lawn mower.
► Do not switch the lawn mower on too fre‐
quently within a short time.
► Set a higher cutting height.
► Mow shorter grass.
The blade is blocked. ► Pull out the activation key.
► Remove the battery.
► Clean the lawn mower.
There is an electrical
fault.
► Remove the battery and fit it again.
► Switch the lawn mower on.
The lawn mower
vibrates excessi‐
vely during ope‐
ration.
The blade fastening
screw is loose.
► Tighten the screw.
The blade is not cor‐
rectly balanced.
► Sharpen and balance the blade.
The lawn mower
operating time is
too short.
The battery is not fully
charged.
► Fully charge the battery.
The battery service
life has been excee‐
ded.
► Replace the battery.
The area around the
blade is blocked.
► Clean the lawn mower.
English
20 Troubleshooting
38
0478-131-9946-D
Summary of Contents for 6338
Page 230: ...STIHL STIHL 4 4 EN 166 4 5 4 5 1 pycc 4 230 0478 131 9946 D...
Page 231: ...4 5 2 10 C 50 C 4 6 4 6 1 STIHL STIHL 4 pycc 0478 131 9946 D 231...
Page 232: ...STIHL 4 6 2 21 2 21 2 STIHL STIHL 4 6 3 15 4 7 pycc 4 232 0478 131 9946 D...
Page 233: ...25 46 6 4 8 4 8 1 4 8 2 4 pycc 0478 131 9946 D 233...
Page 234: ...4 9 4 9 1 4 9 2 10 C 50 C 4 10 pycc 4 234 0478 131 9946 D...
Page 240: ...1 2 I 1 13 4 13 5 1 2 1 2 3 4 14 14 1 pycc 14 240 0478 131 9946 D...
Page 244: ...4 STIHL 3 pycc 20 244 0478 131 9946 D...
Page 249: ...b c 26 4 a b c d e f g h i j k l m n o p 26 5 a b c 26 pycc 0478 131 9946 D 249...
Page 253: ...4 2 STIHL RMA 443 C STIHL AP STIHL STIHL AP 4 3 STIHL STIHL 4 4 4 0478 131 9946 D 253...
Page 254: ...EN 166 4 5 4 5 1 4 5 2 10 C 50 C 4 254 0478 131 9946 D...
Page 255: ...4 6 4 6 1 STIHL STIHL STIHL 4 6 2 21 2 21 2 STIHL STIHL 4 6 3 4 0478 131 9946 D 255...
Page 256: ...15 4 7 25 46 6 4 256 0478 131 9946 D...
Page 257: ...4 8 4 8 1 4 8 2 4 9 4 9 1 4 9 2 4 0478 131 9946 D 257...
Page 260: ...7 8 7 9 7 2 7 2 1 1 2 3 4 1 7 2 2 1 2 3 4 5 1 2 7 2 3 8 8 1 1 2 1 2 8 2 8 260 0478 131 9946 D...
Page 261: ...9 9 1 1 2 3 2 4 1 9 2 1 2 3 3 1 10 10 1 1 2 3 1 10 2 11 11 1 11 1 1 1 9 0478 131 9946 D 261...
Page 264: ...1 2 1 2 3 4 14 14 1 15 15 1 1 2 1 2 15 2 14 264 0478 131 9946 D...
Page 268: ...LED 3 LED 20 268 0478 131 9946 D...
Page 272: ...26 3 a b c 26 4 a b c d e f g h i j k l m n o p 26 272 0478 131 9946 D...
Page 273: ...26 5 a b c d e f g h 26 0478 131 9946 D 273...
Page 274: ...26 274 0478 131 9946 D...
Page 275: ...26 0478 131 9946 D 275...
Page 276: ...www stihl com 04781319946D 04781319946D 0478 131 9946 D 0478 131 9946 D...