TROUBLESHOOTING CS-400
54 X7503256004
© 08/2020 ECHO Incorporated
Fuel vapors are extremely flammable and can cause fire and/or
explosion. Never test for ignition spark by grounding spark plug
near cylinder plug hole, otherwise serious personal injury can
result.
Engine
runs, but
dies
or
Engine
does not
accelerate
properly
Air filter Air filter dirty Normal wear Clean or replace
Fuel filter
Fuel filter
dirty
Contaminants
or residue in fuel
Replace filter or
replace fuel
Fuel vent
Fuel vent
plugged
Contaminated
fuel
Clean or replace
Engine
runs, but
dies
or
Engine
does not
accelerate
properly
Spark plug
Plug dirty or
worn
Normal wear
Clean and adjust
or replace
Carburetor
Improper
adjustment
Vibration Adjust
Cooling
system
Cooling
system dirty
or plugged
Extended
operation in
dirty or dusty
locations
Clean
Spark
arrestor
screen
Spark
arrestor
screen
plugged
Normal wear Replace
Engine
does not
crank
N/A
Internal engine
problem
See your dealer
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem Check Status Cause Remedy
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