How do i adjust intonation on a peavey predator plus exp?

To adjust the intonation on a guitar you need the following. ..
a electronic tuner
and a small philip screwdriver

when you tune a string say low E you play the note open and adjust tell it's in tune
then to intonate play the low E at the 12th fret
producing a Harmonic, view the tuner it will be sharp or flat,
turn the small philip screw on the bridge adjustment
it only takes a small turn one way or the other so go slow
once the string is tuned at the harmonic note check to see if it's in tune played open, keep tuning and adjusting tell the strings are in tune open and at the 12th fret on all six strings
once intonation is set properly the guitar will sound better
really hope that helps?