Stihl MS 231 Manual page 58

yes
Machine runs trouble-free,
no further action necessary
MS 231, MS 231 C, MS 251, MS 251 C
All manuals and user guides at all-guides.com
Check operation
of stop switch:
– Short circuit wire chafed?
– Function between contact spring and switch
shaft contact:
F
– Position " " = no connection
– Position "
– replace the wiring harness if necessary,
b 7.7.2
Powerful
spark?
Install new ignition module
b 7.3
Engine
runs?
2
0
" = connection
no
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
57