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Caroline Powell PhDJul 28, 2025
What to do if my Echo CS-4920 engine starts hard or doesn't start?
- MMrs. Mary OlsonJul 28, 2025
If your Echo Chainsaw engine is difficult to start or fails to start, several factors could be the cause. The fuel strainer or fuel line might be obstructed, requiring cleaning or replacement. A rich fuel mixture could also be the culprit; in this case, open the choke, clean or replace the air filter, or have the carburetor adjusted. Check for spark issues by ensuring the switch is in the ON position. Finally, inspect the spark plug for incorrect gap, carbon buildup, fuel fouling, or defects; adjust the gap to 0.65 mm (0.026 in.) or clean/replace the plug as necessary.
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