Yamaha Tuba Manual del usuario - Página 17

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Yamaha Tuba Manual del usuario
The piston makes a metallic
sound when moved.
• The felt is torn or lost.
➞ Replace the felt with a new one.
• The screws on the piston valve or valve
casing are loose.
➞ Firmly tighten the screws.
• The piston shaft is bent.
➞ Contact the dealer from whom you
purchased the instrument.
The rotor lever makes a metallic
sound when moved.
• There is contact or scraping with the
lever's springs.
➞ Oil the lever mechanisms with lever oil.
• The lever comes into contact with the
pipes.
➞ Contact the dealer from whom you
purchased the instrument.
• The screws are loose.
➞ Firmly tighten the screws.
• The rotor and valve casing have come
loose.
➞ Contact the dealer from whom you
purchased the instrument.
Water leaks from the slides.
• Not enough grease.
➞ Apply grease to the slides.
Troubleshooting
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