Re: draining the fuel, unless it's a completely different setup to the Volvo engined 2l models (which being mitsi powered it might me) the easiest way is to pull the fuse for the fuel pump out and then remove the fuel line that goes to the engine, have a suitable container to hand.
Then remove the relay for the fuel Pump, once that's done either get a small loop of wire and put male spade connectors on it, or use a switch (I used a switch) and then place this in the 2 largest sockets in the fusebox where the relay was.
Canis explained to me how it's done a couple of years back
https://www.volvoforums.org.uk/showthread.php?t=287727