This video shows how easy the Buck Marine Diesel Engine is to work on. We take a single cylinder completely apart and put it back together. The cylinder head, cylinder jug (including a sleeve), the piston, the connecting rod, and rod bearings are all changed from the top of the engine in under 10 minutes. We don't ever drain the oil. Plus, as soon as the cylinder is completely back together we start the engine right up! This is just one of the many innovations this engine has to offer. Check us out at www.buckdiesel.com