Troubleshooting - Echo CS-400 Instruction Manual

Problem
Engine hard to start
—
does not start
—
Engine Fuel at
cranks carburetor
Fuel at
cylinder
Spark at
end of
plug wire
Spark at
plug
Engine
does not
crank
Engine Dies or
runs accelerates poorly
CS-370

TROUBLESHOOTING

No fuel • Fuel filter clogged
at carburetor • Fuel line clogged
• Carburetor
No fuel at • Carburetor
cylinder
Muffler wet • Fuel mixture is too rich
with fuel
No spark at • Ignition switch off
end of plug • Electrical problem
wire
• Spark gap incorrect
No spark at
plug • Covered with carbon
• Fouled with fuel
• Spark plug defective
• Internal engine problem
• Air filter dirty
• Fuel filter dirty
• Fuel vent blocked
• Spark plug
• Carburetor
• Cooling system blocked
• Exhaust port/spark
arrestor screen blocked
26
Cause
• Clean or replace
• Clean
• Ask your ECHO dealer
• Ask your ECHO dealer
• Open choke
• Clean/replace air filter
• Adjust carburetor
• Ask your ECHO dealer
• Turn switch on
• Ask your ECHO dealer
• Adjust 0.6 mm to 0.7 mm
• Clean or replace
• Clean or replace
• Replace plug
• Ask your ECHO dealer
• Clean or replace
• Clean or replace
• Clean
• Clean and adjust/replace
• Adjust
• Clean
• Clean
WARNING
Fuel vapors are extremely flammable and
may cause fire and/or explosion. Never test
for ignition spark by grounding spark plug
near cylinder plug hole, otherwise serious
personal injury may result.
Remedy
(0.024 to 0.028 in.)