9
5
Loosen all over-tightened bolts according to the
procedure described in step
3
(
*2
). When the pitch
is approximately the same at each bolt, repeat-
edly depress the toe and heel of the pedal sev-
eral times.
6
Repeat steps
3
through
5
until the pitch at each
bolt is exactly the same.
7
Check the sound by striking the head as de-
scribed in step
2
.
• Sound is lower than the tuning note
→
Tune the instrument by tightening all tun-
ing bolts by an equal amount (max.
1/16 of a turn).
• Sound is higher than the tuning note
→
Tune the instrument by loosening all tun-
ing bolts by an equal amount (max.
1/16 of a turn) according to the procedure
described in step
3
.
8
Operate the pedal as described in step
5
. If the
pitch does not change, the instrument is tuned
properly.
(If the pitch changes, repeat from step
7
.)
The instrument is now tuned to the lowest sound
(note) of its tonal range. Depress the toe of the
pedal to change to a higher pitch (note).
9
After tuning, perform
■
Pedal Adjustment
and
then
■
Tuning Indicator Adjustment
.
Adjusting the Pitch
●
Pedal balance spring mechanism
Your Yamaha timpani is equipped with a unique pedal
balance spring mechanism (a coil spring counteracting
the tension of the head) which allows you to freely
change the pitch (note) of the instrument. When the pedal
is moved, the pitch of the head will change, and the bal-
ance spring ensures that the pedal angle (pitch) will not
change when you remove your foot from the pedal.
■
Pedal Adjustment
After depressing the toe and heel of the pedal, turn the
spring tension adjustment bolt as described below.
Note
Do not loosen the spring tension ad-
justment bolt by more than 3 rotations
at a time, as the toe of the pedal tends
to drop abruptly after a specific point.
Caution
Never place your fingers or foot into the mov-
ing parts or the space under the pedal or base.
Serious injury can result if fingers or feet be-
come pinched.
• Heel moves up when releasing the foot from the
pedal after depressing the heel, or the heel feels
heavier than the toe.
→
Turn the spring tension adjustment bolt to the
left (counterclockwise).
• Toe moves up when releasing the foot from the
pedal after depressing the toe, or the toe feels
heavier than the heel
→
Turn the spring tension adjustment bolt to the
right (clockwise).
Use the supplied spring adjustment wrench to turn the
spring adjustment bolt. Do not turn too many full rota-
tions at once, and re-check the adjustment every 2 turns
by pressing the toe and heel of the pedal.
Spring Tension
Adjustment Bolt
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