Years ago the local Kawasaki shop had the chain saw. They had a spark plug and a coil attached, also used s motorcycle chain.
Their best one was a fork leg with foot pegs, a carb and gas tank, and handle bars with the throttle cable hooked up. They used to tease one customer who wanted to see that " gas powered pogo stick" run. They told him that at WFO full throttle it could jump 30 feet straight up.
