Yamaha Electric Guitar SGV Series Owner's Manual page 10

Use the tension adjustment screw, located on the side of the tail piece, to adjust the tension that holds the tremolo
arm in place.
Insert the supplied Allen wrench into the tension adjustment screw
on the side of the tail piece, and adjust the tension that holds the
arm in place.
• To make the arm tighter.
Turn the Allen wrench to the right (clockwise).
• To make the arm looser
Turn the Allen wrench to the left (counter-clockwise).
10
Adjust the Arm Tension
To make the arm looser
Turn to the left (counter-clockwise)
Tension adjustment
screw
To make the arm tighter
Turn to the right
(clockwise)