Yamaha YV-520 Owner's Manual - Page 20

ASSEMBLY: YV-3910/3710/3700 10-4 Tone Bar Height Adjustment This adjustment should always be performed by at least 2 persons. To adjust the height of the tone bars, first remove the synchro belt, driver, controller, tone bars, and resonators in the reverse order of steps ., ,, m, n, b, and v, and loosen the center rod fixing bolts. Loosen the slide leg fixing bolts on the high and low sound sides, while supporting the frame ends by hand. Lift the frame ends to the desired height and then securely tighten each fixing bolt, aligning it with the corresponding notch of the slide leg. Bolt and notch are aligned when the next higher notch is flush with the upper leg flange. Slide Leg Align notch with upper flange. Do not touch the notched part during height adjustment to avoid injury. * The fourth notch from top corresponds to the standard height setting. After assembly, confirm that each bolt and screw is tightened securely. When a slide leg fixing bolt is tightened in between two notches, there is a danger of the slide leg slipping. Always make sure that the slide legs are held securely. 18