Yamaha AES1500 Manuel du propriétaire - Page 3

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TUNING MACHINE TENSION ADJUSTMENT

The tuning machines have spring-loaded mechanisms which

automatically take up wear, preventing backlash. However, it is

possible to adjust the amount of pressure required to turn the

machines. Each machine has a tension adjustment screw, as

illustrated.

Loosen

Tighten

Clockwise screw rotation tightens the machine. The tuning ma-

chines 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.

HEIGHT ADJUSTABLE LOCKING NUT

1) Remove 3 pcs. of hexagonal screws fixing the Lock Pads.

(illustration — A)

2) Loosen 4 pcs. of screws fixing the Nut Base.

(illustration — B)

3) Adjust the height by the Height Adjustment Screw. The Nut

Base gets higher by clockwise rotation, and lower by coun-

terclockwise rotation. (illustration — C)

NOTE: As the height has been adjusted in the best con-

dition in the factory, please avoid the adjustment

unless you have suitable experience. We suggest

that you entrust this adjustment to your dealer.