57Series 4180 Powerhead
Check # / STOP-O function
on slide control or separate stop
switch
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 slide control
or separate stop switch
Short circuit wire chafed?
Contact gap (contact springs)
If necessary, install new ignition lead
and/or contact springs, microswitch
Re-connect short circuit wire
2
3
Ignition
spark?
Engine
runs
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