User manual YAMAHA B100III

[. . . ] This will remove corrosive skin oils and acids, and protect the plating, finish, and strings. Avoid exposing the guitar to direct sunlight and extremes of heat and humidity. Congratulations on your purchase of the YAMAHA electric guitar. With reasonable care, your YAMAHA electric guitar will age gracefully and provide many years of superlative musical service. * * 2 TUNING MACHINE TENSION ADJUSTMENT The tuning machines have spring-loaded mechanisms which automatically take up wear, preventing backlash. [. . . ] Each machine has a tension adjustment screw, as illustrated. HEIGHT ADJUSTABLE LOCKING NUT 1) Remove 3 pcs. of hexagonal screws fixing the Lock Pads. (illustration -- B) 3) Adjust the height by the Height Adjustment Screw. The Nut Base gets higher by clockwise rotation, and lower by counterclockwise rotation. (illustration -- C) A C Loosen Tighten B NOTE: As the height has been adjusted in the best condition in the factory, please avoid the adjustment unless you have suitable experience. We suggest that you entrust this adjustment to your dealer. Clockwise screw rotation tightens the machine. The tuning machines should be adjusted to the extent that they are firm, but can turn smoothly. This adjustment is normally unnecessary, and excessive tightening can lead to premature tuning machine wear. 3 SETTING THE STRING ACTION -- Bridge -- NOTE: Be sure to perform any necessary adjustments to the truss rod before performing the following adjustments. Set one end of the 15 cm rule on top of the last fret with the flat side of the rule against the string and measure the space between the top of the last fret and bottom of 1st string, 6th string. If you change string gauge, you will need to readjust the spring tension to return the bridge back to the parallel position. The adjustment procedures are: 1) Remove the screws that attach the tremolo cavity back plate from the back side of the guitar exposing the claw springs. 2) Make sure that the guitar is tuned to proper pitch. 3) If the bridge is tilted forward (up), tighten spring tension by turning the claw screws clockwise. If the bridge is tilted back (down), loosen the spring tension by turning the claw screws counterclockwise. (illustration -- A) Be sure to check string pitch after each adjustment to the spring tension. A A Adjust the height uniformly using the two screws A. 8 TRUSS ROD ADJUSTMENT The curvature of the neck should be slightly concave. Clockwise rotation of the nut tightens the rod and corrects for too much concave bow. Counterclockwise rotation of the nut loosens the rod and corrects for too much convex bend. Allow five to ten minutes for setting, and check the curvature after each 1/2 turn of the truss rod nut. PICKUP HEIGHT ADJUSTMENT The height of the pickup (i. e. [. . . ] distance from the strings) affects gain -- the higher the pickup, the louder the sound, and vice versa. If the pickup is set too high, sustain and playability will suffer because of the magnetic pull on the strings. Adjust overall height using the screws located at either side of the pickup. [. . . ]