Yamaha Clavinova CLP-820 Owner's Manual page 52

7
F
B
3
4 x 12 mm round-head screws
F
4
4 x 20 mm tapping screws
M
Attach the rear panel (F).
With the rear panel slightly angled as shown in the illustration,
lower it onto the feet's protruding edge at the rear of the pedal
box. Then, secure the top of the rear panel to the side panel
brackets using two 4 x 12 mm round-head screws 3. Finally,
secure the bottom of the rear panel to the pedal box using four 4 x
20 mm tapping screws 4.
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CLP-880/860/840/820/820S