all you have to do is take off the top cover and use a 5/16 Allen wrench 1/6 of a turn.
Is that all? Because the Banks turbo manual talks about removing a spring and only doing it when it is cold
Page 14 of
http://assets.bankspower.com/manuals/429/96291-v2-web.pdf
NOTE: The engine must be COLD before starting this
procedure.
...
Observe the position of the metering valve spring
4. over the top of the guide stud. This position must be
duplicated exactly during the reassembly. See Figure 18.
Remove the Allen-head guide stud and sealing washer
5. from the rear (outside) of the pump bowl. While
rocking the throttle lever toward the rear of the engine, lift
out the governor spring assembly. Do not bend any springs or
linkages.
etc..