User Manual

27
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Tuning the Instrument
Slide the main tuning slide in or out to tune the
instrument. Since temperatures have an effect
on the instrument’s pitch, blow some warm air
through the instrument to warm up the instru-
ment before tuning.
Main tuning slide
Before You Play
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About the 5th Valve Extension
(YFB-621/YCB-822 Only)
e YFB-621 and YCB-822 are both supplied with
an extension for the 5th valve that can be installed
between the 5th valve slide and the instrument’s
main 5th valve tubing. The 5th valve lowers the
instrument’s pitch. e 5th valve’s pitch changes as
described below when the extension is removed.
Normally, the 5th valve is used in combination
with the 4th valve, etc., to correct pitch in the
instrument’s lower range, however the pitch may
be slightly higher or lower depending upon the
mouthpiece being used.
• With the 5th Valve Extension installed
(as shipped from the factory)
YFB-621: 4/3 steps lower
YCB-822: 2 steps lower
5th valve slide
5th valve slide
5th valve extension
Instrument (5th valve slide)
Instrument (5th valve slide)
• Without the 5th Valve Extension
YFB-621: 2/3 steps lower
YCB-822 4/3 steps lower