Ryobi
Rich Fuel Mixture / Incomplete Combustion
Generator runs but emits visible black smoke from the exhaust.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Restricted air filter, Stuck choke mechanism, Incorrect gas pressure (too high), Carburetor metering fault
How to Fix / Troubleshooting
Safety first: Operate the generator only in a well‑ventilated outdoor location. Turn it OFF before inspection.
- Check air filter: Remove and inspect the air filter. Replace if dirty or oil‑soaked.
- Inspect choke: Verify that the choke plate fully opens after warm‑up. If it remains partially closed, adjust or repair the choke linkage or actuator.
- Gas pressure check (professional): Have a gas technician verify that inlet gas pressure is within Ryobi specifications. Excessive pressure can cause rich running.
- Carburetor service: If black smoke persists, the carburetor may need cleaning or replacement.
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Repair Difficulty
Medium
3/5
Required Part
Air Filter Element
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