Yamaha SPERZEL"Trim-Lok" Manual

The SPERZEL "Trim-Lok" tuners offer easy string change
and improved tuning stability when using the tremolo bridge.
1) Loosen the knob q on the back of the tuner. As the
locking pin w in the string post goes down, remove the
old string.
2) Place the new string from the bridge into the string hole
e of the string post.
Do not wind the string around the post.
3) Pull the new string tightly and tighten the knob q to lock
the string.
4) Tune the strings to the pitch.
Don't loose the knob q too much. It may drop out the
NOTE
tuner.

■ String Action

Adjust the tremolo unit height by rotating the height adjustment bolts q.

■ Intonation Adjustment

If the pitch at the 12th fret is sharp compared to the harmonic tone:
→ Turn the intonation adjusting screw w clockwise.
If the pitch at the 12th fret is flat compared to the harmonic tone:
→ Tune the intonation adjusting screw w counter-clockwise.

■ Arm Tension

Turn the arm tension screw e clockwise to make the arm tighter.
Turn the arm tension screw e counter-clockwise to make the arm looser.
QC81510 0609
Printed in Korea
Loosen
Tighten
q
q
w
w
e
e