The ones that really challenge me are the big John Deere 2-cylinders with a hand crank built into the flywheel on the side. It's sort of like a necker's knob on a steering wheel, but it's designed to stow away from centrifugal force as soon as the engine starts. The trick is to release the compression, get the flywheel spinning, and hit compression and ignition at the same time. If everything goes right, it will pop a time or two, and start running. (Now you know why they're called "Johnny Poppers"!)
Jerry
