20 
TROUBLESHOOTING
ENGINE PROBLEM TROUBLESHOOTING CHART| Problem | Check | Status | Cause | Remedy | |
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| No fuel at | Fuel strainer clogged | Clean or replace | |
| Fuel at carburetor | Fuel line clogged | Clean or replace | ||
| carburetor | ||||
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| Carburetor | See your Echo dealer | ||
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| No fuel at cylinder | Carburetor | See your Echo dealer | |
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Engine | Fuel at cylinder |
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| Open choke | |
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| Clean/replace air filter | |||
| Muffler wet with fuel | Fuel Mixture too rich | |||
cranks - |
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| Adjust carburetor | ||||
starts hard/ |
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| See your Echo dealer | ||
doesn't |
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| Stop switch off | Turn switch to ON | ||
start | Spark at end |
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| No spark | Electrical problem | See your Echo dealer | ||
| of plug wire | ||||
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| Interlock switch | See your Echo dealer | ||
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| Spark gap incorrect | Adjust to .65mm (0.026 in.) | |
| Spark at plug | No spark | Covered with carbon | Clean or replace | |
| Fouled with fuel | Clean or replace | |||
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| Plug defective | Replace plug | |
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| Air filter | Air filter dirty | Normal wear | Clean or replace | |
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| Fuel filter | Fuel filter dirty | Contaminants/residues | Replace | |
| in fuel | ||||
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| Fuel vent | Fuel vent plugged | Contaminants/residues | Clean or replace | |
Engine | in fuel | ||||
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runs, |
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Spark Plug | Plug dirty/worn | Normal wear | Clean and adjust or replace | ||
but dies or | |||||
does not |
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| Improper |
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accelerate | Carburetor | Vibration | Adjust | ||
properly | adjustment | ||||
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| Cooling System | Excessive | Extended operation in | Clean | |
| dirt/debris | dirty/dusty locations | |||
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| Spark Arrestor | Screen cracked, |
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| plugged, or | Normal wear | Replace | ||
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| perforated |
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Engine |
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does not | N/A | N/A | Internal engine problem | See your Echo dealer | |
crank |
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WARNING 
DANGER
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.