I am looking to buy a used 912uls or 914. I suspect that it is a lot like buying a used car. What precautions can I take to try to avoid being taken? I saw a rebuilt 914 for $9000 and suspect that the $28000 engine has had some issues. How does anyone know it is a sound engine or that is was rebuilt correctly? I saw a 220hour 912uls for sale “no prop strike” and the owner is selling a damaged ultralight. Sounds like a good deal, but again, I am a novice at this.

How does one buy a used engine?