Yamaha AES620 Owner's Manual - Page 6

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When changing strings it is necessary to cut off the ball ends

of the strings.

Following is the procedure for changing strings and adjusting

the vibrato system:

1) Using the supplied hexagonal wrench, loosen the three hex-

agonal screws on the lock above the nut. (illustration — A)

2) Loosen the individual string locks using the supplied hex-

agonal wrench. (illustration — B)

3) Replace the old strings with new strings.

4) Using the hexagonal wrench, lock each string.

(illustration — B)

After locking the strings, make sure that the fine tuning

thumb screws are in the middle of their range of travel. (il-

lustration — C)

5) Tune the guitar to the correct pitch.

6) Remove the back plate to gain access to the vibrato strings.

Three springs are factory installed and we recommend that

these springs be adjusted so that the vibrato bridge plate

is parallel to the top of the guitar when it is tuned to correct

pitch.

VIBRATO SYSTEM Locking Type (part 1)

7) Lock the strings above the nut. (illustration — A)

8) Use the fine tuning thumb screw to tune the guitar to the

correct pitch. (illustration — C)

Loosen

Tighten