I have a 4.5 HP Kubota diesel engine (EL300-AR). It was originally from one of those flashing highway arrows. What should I do with it? I saw it on craigslist earlier this year and couldn't say no. I was thinking bike or trike, but that might never happen. I could make a generator, but that's no fun to ride.
It's tempting to run it on WVO, but I'm not sure how tolerant it is of that stuff.