Yamaha Trombones Owner's Manual - Page 12

Caring for the Instrument 4. Slide the tuning slides back and forth sev- eral times to distribute the grease evenly. 3. Also apply small amounts of rotor spindle oil to the rotor rotation shaft and its receiver. After applying oil, close the valve cap and move the lever a few times to distribute the oil evenly. Apply oil here Rotary Tuning Slide ● Rotary Valve Maintenance 1. Apply some rotor oil to the rotary valve through the slide receiver end. 2. Remove the rotary valve cap and apply a small amount of rotor spindle oil to the center of the rotary valve and the area supporting the shaft. * The rotary valve is a precision crafted part. Attempting to remove the valve in an improper manner will cause damage. 4. Apply some lever oil to the lever mecha- nism. Lever rotary valve cap 26