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| Solution | Pros | Cons | Best For |
|---|---|---|---|
| Fuel shutoff valve | Prevents carb varnish; easy to use | Small cost and installation effort | Seasonal storage or infrequent use |
| Ethanol-free fuel | Fewer deposits; better storage stability | Higher price; availability varies | Users with repeated carb clogs |
| Pre-mixed small engine fuel | Ultra-stable; clean burning | Most expensive per gallon | Occasional users or long storage |