Fuel will spill - Richard's right
I let a real technician change the fuel filter last year, just to see it done "right" and I watched as he attempted to without shutting off the fuel. He quickly pulled out the incoming hose and plugged it with something...but not before spilling fuel in the engine area. Not worth the smell and clean up.In an earlier post, I had mentioned installing an access panel in the rear; short of that, definitely unscrew the six screws, pull out the panel and shut the fuel off before changing the filter.The technician also removed the entire filter assembly from its place behind the engine (i.e. removed the whole works), and made the filter change. Then re-attached the whole works back in place. Couldn't see him doing any headstands.