I took the "Getting to know your diesel" class. 5 working diesel engines and 3 nonworking engines that are there to teach hands on. The nonworking engines displayed how the cylinders, valves, fuel injectors as well as valves work and are adjusted. One nonworking engine was used for getting air out of the fuel lines. The third one was for practicing how to remove the cylinders out of the engine block. Pretty cool?? Well... Over the top yes. The teachers, John, was funny, kind, patient and eager for all of us to feel more confident on our personal boats. This class gets an A plus. And add bonus points. We heard stories that will cause you to lose your breath from laughing from original Stories of Maine humor." John teachers with the authority and experience in which there is no room for ego in order to "get 'er done." Read the manual !!! Then go from there. Thank you, John! read more