Translations:KAVAN FS400AR - Instruction manual/24/en
Fuel
For consistent performance and long life of the engine, it is advisable to use good quality fuel containing not less than 18% lubricant, castor oil preferred, until a total of 1 - 2 hours of break-in has been achieved. Once break-in has occurred, the running characteristics of the FS 400 can be improved using a slightly lower lubricant content fuel, however, it may also shorten engine life. See Chart for Fuel Specifications:
| Break-in | |
|---|---|
| 10-15% | Nitromethane |
| 18% | Castor Oil |
| 67-72% | Methanol |