Genesis,
I don't have a hand pump. I'm assuming it's a relatively expensive thing to get for such a minor once off job?
Ok, I'm not an engineer, but if I remember my physics correctly, doesn't siphoning require that the end of the pipe with the fuel coming out it, be lower than the end with the fuel going in? So this would be quite hard to do directly from tank to thank.
Actually it's Genghis, Genesis was Phil Collin's first band.
Offhand, I'd expect to pay about a tenner, maybe £20 tops for a siphon or similar type pump from a car shop, the only other thing you are likely to need is a length of fuel hose - probably from the same source.
(something like
this )
G