Yamaha Trombones Owner's Manual - Page 13

Caring for the Instrument Oil the water key Neglecting to oil the water key can result in poor function of the water key. Use a fine gauze cloth to clean in tight places. ■ Twice Yearly Maintenance ● Cleaning the instrument 1. Prepare a brass soap water solution. Mix 1 part brass soap with between 10 and 15 parts warm water (30° C to 40° C). Remove the tuning slide and slide sections before placing the instrument in the soap water solution. * Contact your dealer when the rotary valve needs cleaning. 2. Apply some brass soap solution to a flex- ible cleaner and use the cleaner to clean the inside of the instrument. Outer Slide ● Stringing the Rotary Valve Wrap the string as shown in the illustration below then fasten the string in place with the small string screw. After the string is secured, use the small screw A to adjust the lever position. String screw B Lever linkage Rotor stem screw * Use a cleaning rod wrapped with gauze to clean out the inside of the inner slide. 3. After cleaning the instrument, use clean water to thoroughly rinse out the brass soap water solution. After that, apply some slide grease to the tuning slide and reassemble. Tuning slide String screw A 27