Stihl MS 650

57MS 650, MS 660
Check “#“/“$“ function
on Master Control
lever
no
Install new
ignition module
yes
no
Look for fault in fuel system
or carburetor,
check engine for leaks,
check position of flywheel on
crankshaft
yes
Check operation of
Master Control lever:
– Short circuit wire chafed?
– Contact gap (contact spring)
– If necessary, install new ignition lead
and/or contact spring
– Re-connect short circuit wire
2
3
Engine runs
Powerful
spark?