Electronic gas engine for a order rc plane

Product Name: Electronic gas engine for a order rc plane
I'm selling this for my mom it was her ex husband he took the plane so I don't know what kind it goes to. I don't know anything about it she said she thought it worked when it was out in he just traded for different engine and put it in shed. It looks in almost new condition it has been used i think like I said I dnt really know much about it . I can send more pics if u need there is no manual and the order only thing I see on it is a name walbro. This is AS IS.