Troubleshooting, Problem Cause Remedy | Echo CS-550P instruction

TROUBLESHOOTING

		Problem
				Cause	Remedy
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
			Muffler wet	• Fuel mixture is too rich	• Open choke
			with fuel		• Clean/replace air filter
			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
	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 gap incorrect	• Adjust 0.6 mm to 0.7 mm
	Spark at		No spark at		(0.024 to 0.028 in.)
	plug		plug	• Covered with carbon	• Clean or replace
	plug		plug	• Covered with carbon	• Clean or replace
				• Fouled with fuel	• Clean or replace
				• 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
				• Fuel vent blocked	• Clean
				• Spark plug	• Clean and adjust/replace
				• Carburetor	• Adjust
				• Cooling system blocked	• Clean
				• Exhaust port/spark	• Clean
				arrestor screen blocked
				arrestor screen blocked

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.