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Already own a nitro SEMTO ST-NF2 / OTTO MOTOR FS-L200AC? This kit converts it to run on regular gasoline.
It replaces the glow-plug ignition with a spark-plug ignition system (CDI + Hall sensor + magnet flywheel), so your existing nitro twin-cylinder engine can run on 92# / 95# gasoline instead of nitro fuel.
You own a nitro ST-NF2 / FS-L200AC and want to switch to gasoline, which you can buy at any gas station.
Choose Latest Version above.
TOYAN now makes a factory gasoline version, the FS-L200GC. If you don't own a nitro engine yet, it's simpler to buy the gasoline engine directly than to buy a nitro engine and convert it.
See the Gasoline Complete Set →1. A 2S–3S lithium battery with a JST plug.
2. Gasoline: 92# / 95# gasoline mixed with 2-stroke (2T) oil at 25:1 (about 40ml oil per liter). We can't ship fuel, so please buy it locally.
Most "CDI not working" cases we see are small installation mistakes, not broken parts. Please check these first:
1. Keep the resistor on Red 1. Red 1 sends the spark pulse. The resistor protects the Hall sensor, so never remove it.
2. Red 2 is the ground. In the latest CDI, Red 2 works as both the negative and the spark return path. That's why there's no black ground wire. This is normal.
3. Hall sensor about 10mm below the flywheel. Too close or too far can make the spark fire at the wrong time.
4. Test at low throttle first. Check that the ignition works before running at full throttle.
Fuel setup tips:
Our full guide explains how the CDI ignition works, shows wiring photos, and includes a quick checklist.
Quick check video: how to tell if your CDI and spark plug are working (the CDI light flashes when it fires).
More guides: How to maintain your ignition system and prevent CDI & Hall sensor failures · FS-L200GC gasoline vs FS-L200AC nitro: what's the difference?
| Fits | SEMTO ST-NF2 / OTTO MOTOR FS-L200AC inline twin-cylinder nitro engines |
| CDI input / output | 8–12V / 15–20KV |
| Battery (not included) | 2S–3S lithium, JST plug |
| Material | Plastic + metal + electronic components |
| Product weight | 330 g |
| Package | 20 × 10 × 6 cm, 400 g, box |
| Age | 14+ |
Only the latest version is available. The old version is discontinued.
Stirlingkit has its own technical team that works with SEMTO and TOYAN engines every day. If the engine fires for a few seconds and then stops, or the wiring looks confusing, you don't have to figure it out alone.
Send us a photo or a short video of your wiring. A real person will look at it and walk you through the fix, usually within 1 business day.
Email service@stirlingkit.com →