Yamaha System Owner's Manual - Page 4

English Part 4 : Adjustments ■ String height adjustment To adjust the string height (string action), rotate the two bolts with hexagonal wrench. (Fig. ) * All the string heights can be set properly by adjusting the two bolts. Adjust string height 2 Adjust the location of the bridge saddle with the hexagonal wrench. (Fig. ) a) If the fretted tone at the 12th fret is higher in pitch than the harmonic tone at the 12th fret, rotate the intonation screw clockwise to move the bridge saddle backwards. b) If the fretted tone at the 12th fret is lower in pitch than the harmonic tone at the 12th fret, rotate the intonation screw counter-clockwise to move the bridge saddle forwards. Lower action Higher action Move the bridge saddle Bridge Saddle ■ Intonation adjustment 1 To adjust the intonation of each string, pull up the locking lever of the FC tremolo (Fig. ) and loosen the screw inside the bridge saddle. (Fig. ) Unlock the bridge saddle Tighten Loosen a) Backward b) Forward 3 Tighten the screw inside the bridge saddle. (Fig. ) 4 Return the locking lever of the FC tremolo to the original position. (Fig. ) Part 5 : Adjusting the Truss Rod 1 Loosen two screws of the truss rod cover with the Phillips head screw driver. (Fig. ) Remove the truss rod cover Screw driver 2 Rotate the truss rod nut with the screw driver. (Fig. ) * The curvature of the neck should be slightly concave. * Make any adjustments gradually. Adjust the neck If too much convex bend If too much concave bow Truss rod cover 4