I soaked the fuel tank retaining bolts in penetrating oil for a few days and using two floor jacks, lowered the tank. Use a piece of wood on each jack to protect the tank from damage. There are fuel lines to the top of the tank as well as electrical wires. Disconnect these as the tank is carefully lowered. I did it myself but a helper would have been useful,as the one jack kept leaking down! Replace the fuel hose to your generator before putting the tank back up. The whole process is quite intuitive and the less fuel there is in the tank makes it easier to handle.
04 Southwind 37C W22
DIY Rear Panhard Rod