Vibrato System Locking Type (Part 2) - Yamaha AES920 Owner's Manual

Intonation Adjustment in Vibrato Bridge
1) Loosen the hexagonal screw located in front of each saddle
using the supplied hexagonal wrench. (illustration — D)
2) Slide the saddles by hand to adjust the length of each
string.
3) When the intonation is correct, tighten the hexagonal screw
in front of each saddle to ensure that its position stays sta-
tionary. (illustration — D)

VIBRATO SYSTEM Locking Type (part 2)

When Lower
than harmonic
7
D Tighten
Loosen
When Higher
than harmonic
Loosen
Lower
C
Higher
Tighten
B