Use and Care Manual

30
CS-490
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
cranks
Fuel at
carburetor
No fuel at
carburetor
• Fuel filter 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
Muffler wet with
fuel
• Fuel mixture is too rich • Open choke
• Clean / replace air filter
• 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 filter dirty • Clean or replace
• 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
arrestor screen blocked
• Clean