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Aimee FoxAug 6, 2025
Why does my Ryobi PCN 4040 Chainsaw engine not reach full speed and emits excessive smoke?
- DdestinyreyesAug 6, 2025
If your Ryobi Chainsaw engine isn't reaching full speed or is emitting excessive smoke, consider the following: 1. **Check oil fuel mixture:** Use fresh fuel and the correct 2-cycle oil mix ratio. 2. **Air filter dirty:** Clean the air filter. 3. **Spark arrester screen dirty:** Clean the spark arrester screen. 4. **Carburettor requires “H” (High jet) adjustment:** Contact a Ryobi service dealer for carburettor adjustment.