The school I work for just received a older Yale forklift that runs very well for free. It does need some work however. I plan to use it as a class project and fix it up. However the i.d. tag is missing and I'd like to figure what exact model it is. After reading through these forums and comparing to pics on the web it looks like a L51C. However, it has a floor shift and the pics I saw on the internet are column shifts. Ours looks like it was originally a gas and someone converted it to LPG. It has a 4cyl flathead engine with a distributor in the center of the head.