Operator's Manual

CS-3510 TROUBLESHOOTING
X7503360201 53
© 8/20 ECHO Incorporated
TROUBLESHOOTING
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem Check Status Cause Remedy
Engine
starts hard
or
Engine
does not
start
Fuel at
carburetor
No fuel at
carburetor
Fuel strainer or
fuel line
obstructed
Clean or replace
See your dealer
Fuel at
cylinder
No fuel at
cylinder
Carburetor See your dealer
Engine
starts hard
or
Engine
does not
start
Muffler wet
with fuel
Fuel mixture too
rich
OPEN choke
Clean or replace
air filter
Adjust carburetor
See your dealer
Spark at
end of plug
wire
No spark
Incorrect gap -
Covered with
carbon - Fouled
with fuel - Plug
defective
Adjust to 0.65mm
(0.026 in.)
Clean or replace
plug
Spark at
plug
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