Most likely he has 2 pumps - one in the tank and the other on the RH corner of the engine-bay near the bulkhead.
Turn the key to get the ignition lights on - but do NOT try to start it - you should hear the pumps running and than shut down after a minute or two. You may hear gurgling fuel noises, but not to worry.
You need to repeat this procedure 4 or 5 times before even trying to start. Even then it may stall - if so then repeat the key without starting bit a few more times. Eventually it will start and perhaps run rough for a minute or two.
This is pretty standard procedure for an electric self-bleeding pump these days. Mechanical pumps need a completely different approach.
If we knew which fuse it would help as it might be affecting the pumps.
SV.