How to turn diesel pump up

[marshy52]

Hi all i have a 1.7 diesel corsa b and i am wanting to turn the pump up a bit wheres the screw at 2 do it and how much should i turn it by thanks.

[PRICER]

there should be a screw sticking out of the pump where the injectors come out or on the end about inch long with a metal crimped shroud over it, cant tell you where it is off the top of my head, but thats what they are on land rovers that iv got and other tractors etc, take a photo of your pump and can show you, but should be there somewhere.