If you mean turn up the fuel to max and it is a
stanadyne or a Roosa Master it is fairly easy.On the side
of the pump by the tag there is a cover that is held
on by 2 screws remove it,under this there is a
hole,slowly turn engine over by hand until you see an allen
wrench I believe 5/32 tighten screw all the way down.If
your pump has a 4 after the first 2 letters then you
have 2 screws that you must tighten down.For more
power you can pull the entire pump down and remove the
leaf springs.these changes only affect max fuel,if
other changes are needed contact me or leave another
message