Yamaha Tubas Owner's Manual - Page 14

Maintenance ● Valve slide maintenance 1. Wrap a cleaning rod with gauze so that no bare metal is exposed. Cleaning rod ● Other maintenance Use a fine gauze to carefully clean those places that are difficult to clean such as the backsides of slides, etc. Gauze * Exposed metal can result in damage to the instrument. 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. Always store the instrument in its case when taking a break, during transport, and after playing. Always remove and disassemble the mouthpipe assembly before placing the sousaphone or marching tuba series instruments in their case. 4. Slide the valve slide in and out a few times to distribute the grease evenly. About the mouthpiece The mouthpiece that is supplied with your instrument is a standard mouthpiece. The mouthpiece is designed to fit into the mouthpiece receiver without being loose. Do not treat the mouthpiece roughly, drop, or damage the mouthpiece, etc. * Reverse the left and right sides of the illustration when placing front action instruments in their cases. 30