A Kalt KG22 is a Zenoah G23, early style...The prop was held on by 2 nuts on a 6mm threaded rod...There's a set of points behind the flywheel..The spark plug MUST be a NGK BMR6A, any other plug is too long, the piston will hit the side electrode and close it...If you have any problems getting it to run it will need a carb diaphragm kit, about $5....16 inch props work best...It will last a very long time if not crashed...