Stihl MS 231

57MS 231, MS 231 C, MS 251, MS 251 C
Machine runs trouble-free,
no further action necessary
no
Install new ignition module
b 7.3
yes
no
– Look for fault in fuel system or
carburetor
– Check engine for leaks
– Check position of flywheel on
crankshaft,
b 6.2, b 7.6
yes
Check operation
of stop switch:
– Short circuit wire chafed?
– Function between contact spring and switch
shaft contact:
– Position "
F" = no connection
– Position "
0" = connection
– replace the wiring harness if necessary,
b 7.7.2
2
3
Powerful
spark?
Engine
runs?
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