My first step was, of course, shutting off the fuel valves on both my two fuel tanks. Then I put a bucket under the unit and removed the plastic drain assembly (which I discovered was on the verge of failing) from the bottom of the bowl using an adjustable wrench, thereby allowing quite a bit of fuel to whoosh into the bucket. Loosening the assembly meant rotating it counterclockwise, by the way. Backing off the T-handle at the top of the unit and removing the topside lid, as well as the filter element inside the canister, finished the draining process in short order.
Greenline Hybrid is a boatbuilder that uses hybrid diesel-electric propulsion systems and solar panels on the hardtop plus smart design to make the efficient use of the energy on the boat. The result in some models: silent operation, full-size residential appliances, and an overall pleasant experience on board.
See for yourself here. ▶