http://www.phantomotaku.com/SVX/MSA5...uel_system.pdf
Under the access plate is the fuel tank access cap...follow the above thread to see the workings here. The cap ring unscrews..special tool makes it easier but using a drift to turn the cap via the slots CCW will get things going after you disconnect the various hoses/electrical connector. The rubber gasket is usually reusable. Supposed to torque down the cap ring but don't see the spec. number. I'd just gain access enough to insert a pump's tubing since you can bugger things up if you yank the whole assembly out..fuel meters, etc.