[mspencer]

I just bought this unit not running. Thought I would tinker with it a bit. Are there any engine upgrades/replacements I can put in to give it more power. It currently does not run, has not run in 3 years. I was told it was something electrical. As I am looking at this to figure out what is wrong, I thought about replacing the entire motor with something bigger. Does anyone know of any direct replacement 250cc or even larger motors that will "drop in" with out too many modifications?
Any other upgrades I can do to this existing engine that are worth while?

Thanks for the help