Vibrato System Vintage Type - Yamaha AES920 Owner's Manual

Following is the procedure for adjusting the vintage vibrato
system:
When Lower
than harmonic

VIBRATO SYSTEM Vintage Type

To check intonation, compare the harmonic tone (12th fret) to
the fretted tone (12th fret).
● If fretted pitch is higher than harmonic, saddle must be
moved backward to lengthen string.
When Higher
● If fretted pitch is lower than harmonic, saddle must be
than harmonic
moved forward to shorten string.
5
Turn clockwise
Bridge saddle
Adjustment screw
Turn counter-clockwise
Bridge saddle Adjustment screw