Tecumseh TNT100 - Troubleshooting Electrical Starter Circuit Flow Chart

46
Starter will not
turn
Starter turns at
low rpms or
stalls under load
Is there power
at the power
source?
Check wiring,
connections,
safety switches,
starter switch
Check starter for
binding brushes,
worn brushes,
dirty or oily
commutator
NO
NO
YES
YES
Repair or
replace power
source
Is power supplied to the
starter terminal?
Internal engine
failure, repair or
replace engine
NO
YES
Isolate engine
from the
equipment,
does engine
turn over?
Repair or replace
equipment
causing
excessive loading
Remove spark
plug, does engine
turn over freely?
YES
NO
Internal engine
failure or flywheel
interference
Reinstall spark
plug, does
engine bind on
compression
stroke?
YES
NO
Check valve lash.
Adjust if
necessary. Does
the engine turn
over without
binding now?
YES
NO
Repair or replace
electric starter
TROUBLESHOOTING ELECTRICAL STARTER CIRCUIT FLOW CHART
Intermittent
starter operation