In this video I will show you how to remove the 2 stroke mariner oil injection pump drive gear. These older mariner 2 stroke outboard are always failing because of the oil pump gear as it is plastic. All you have to do is remove the drive gear in the oil pump and them put the pump back on. Then mix the 2 stroke oil in the gas. You will then not have to worry about the engine overheating from the wrong oil mixture. This plastic gear is what kills most 2 stroke outboard engines.