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Steven ChungJul 25, 2025
Why Ryobi RBC254SESO engine will not start?
- DDiane MartinJul 25, 2025
The Ryobi Trimmer engine might not start due to several reasons: no spark (potentially damaged spark plug), no fuel, a flooded engine, a start rope that's harder to pull, or old fuel. Check the spark plug for dirt and cracks, and replace if necessary. Push the primer bulb until it's full of fuel; if it doesn't fill, the primary fuel delivery system may be blocked and requires servicing. If the engine is flooded, remove the spark plug, aim the spark plug hole at the ground, rotate the choke lever to the “ ” position, and pull the starter cord 10 to 15 times to clear excess fuel. Clean and reinstall the spark plug. Ensure you're using fresh fuel mixed with the recommended oil, as fuel over 30 days old may prevent starting.