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29
CS-500P
TROUBLESHOOTING
WARNING
Fuel vapors are extremely fl ammable and
may cause fi re 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
cranks
Fuel at
carburetor
No fuel at
carburetor
• Fuel fi lter clogged
• Clean or replace
• Fuel line clogged
• Clean
• Carburetor
• Ask your ECHO dealer
Fuel at
cylinder
No fuel at
cylinder
• Carburetor
• Ask your ECHO dealer
Muffl er wet with
fuel
• Fuel mixture is too rich
• Open choke
• Clean / replace air fi lter
• Adjust carburetor
• Ask your ECHO dealer
Spark at end
of plug wire
No spark at end
of plug wire
• Ignition switch off
• Turn switch on
• Electrical problem
• Ask your ECHO dealer
Spark at plug
No spark at plug
• Spark gap incorrect
• Adjust 0.6 to 0.7 mm
• Covered with carbon
• Clean or replace
• Fouled with fuel
• Clean or replace
• Spark plug defective
• Replace plug
Engine
does not
crank
• Internal engine problem
• Ask your ECHO dealer
Engine
runs
Dies or accelerates poorly
• Air fi lter dirty
• Clean or replace
• Fuel fi lter dirty
• Clean or replace
• Fuel vent blocked
• Clean
• Spark plug
• Clean and adjust / replace
• Carburetor
• Adjust
• Cooling system blocked
• Clean
• Exhaust port / spark
arrestor screen blocked
• Clean