Here's how to adjust the volume level of the hihat pedal in the TD-6V:
1. Select a kit to edit.
2. Press EDIT/SETUP.
3. Press cursor right to select "COMMON," and then press ENTER.
4. Press cursor right to choose "Pedal HH Vol."
5. Press the + button to increase the level (0-15).
6. Press EXIT when you're finished. The new settings are saved in the kit automatically.