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29
CS-450P
TROUBLESHOOTING
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.
Problem
Engine
— hard to start
Cause
Remedy
— does not start
Engine
Fuel at
No fuel
• Fuel filter clogged
• Clean or replace
cranks
carburetor
at carburetor
• Fuel line clogged
• Clean
• Carburetor
• Ask your ECHO dealer
Fuel at
No fuel at
• Carburetor
• Ask your ECHO dealer
cylinder
cylinder
Muffler wet
• Fuel mixture is too rich
• Open choke
with fuel
• Clean/replace air filter
• Adjust carburetor
• Ask your ECHO dealer
Spark at
No spark at
• Ignition switch off
• Turn switch on
end of
end of plug
• Electrical problem
• Ask your ECHO dealer
plug wire
wire
• Spark gap incorrect
• Adjust 0.6 mm to 0.7 mm
Spark at
No spark at
• Covered with carbon
• Clean or replace
plug
plug
• Fouled with fuel
• Clean or replace
• Spark plug defective
• Replace plug
Engine
• Internal engine problem
• Ask your ECHO dealer
does not
crank
Engine
Dies or
• Air filter dirty
• Clean or replace
runs
accelerates poorly
• Fuel filter dirty
• Clean or replace
• Fuel vent blocked
• Clean
• Spark plug
• Clean and adjust/replace
• Carburetor
• Adjust
• Cooling system blocked
• Clean
• Exhaust port/spark
• Clean
arrestor screen blocked