Replacing the Head
When the Head Should Be Replaced
The head is an expendable item that eventually will wear out and need to be replaced. Replace the head when the following occurs: � The head surface is torn � Striking points are no longer detected correctly, even when the head tension is properly adjusted. � Slack portions remain in the head even after the head tension is properly adjusted.
6. Pass the tuning bolts through the washers, then attach them to the hoop and frame. 7. Next, adjust the tension of the head. Refer to �Adjusting the Head Tension� (p. 6).
Do not firmly tighten a single tuning bolt by itself. Doing so will make it impossible to tension the head evenly, and will cause malfunctions such as failure to accurately detect the striking location.
About the Lock Bushings
The KD-80 and the PD-80R are provided with lock bushings to prevent rotation and loosening of the tuning bolts caused by vibration transmitted from the hoop. If a lock bushing happens to become separated from the frame while the head is being replaced, position the bushing so its four slots are aligned with the corresponding ridges in the frame, then press down firmly on the bushing. Lock Bushing
Replacement heads (optional)
MH-8 Mesh Head: for either KD-80, PD-80R or PD-80
Replacing the Head
1. Remove all tuning bolts and washers.
When replacing the head of the KD-80 or the PD-80R, press the lock bushing (in figure below) in place with your finger as you remove each tuning bolt, to prevent the bushings from being pulled off the frame. Only the KD-80 and the PD-80R are provided with lock bushings.
Frame
Tuning Key Tuning Bolt Washer
Hoop Lock Bushing Frame
For more on the lock bushings, refer to the following section, �About the Lock Bushings.�
2. Remove the hoop. 3. Remove the old head. 4. Place the new head on the frame. 5. Place the hoop onto the head.
