Yamaha YBB-841 Manuel du propriétaire - Page 16
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Maintenance
Rotor and valve casing maintenance
As done before and after playing, apply some rotor
spindle oil to the rotors and valve casing.
Also, apply some lever oil to the lever shaft.
Valve slide maintenance
1.
Wrap a cleaning rod with gauze so that no bare
metal is exposed.
Cleaning rod
Gauze
* Exposed metal can result in damage to the instru-
ment.
2.
Remove dirt from the inside of the inner and
outer sections of the valve slide.
3.
Use the gauze to remove dirt from the valve
slide's surface then apply a little slide grease
to the surface of the inner section of the valve
slide.
16
4.
Slide the valve slide in and out a few times to
distribute the grease evenly.
Other maintenance
Use a fi ne gauze to carefully clean those places that
are diffi cult to clean such as the backsides of slides,
etc.