How do I remove the back cushion of the rumble sea
The rumble backrest is held in with 4 clips. At the bottom of the spring you will see 2 clips sticking downward with a screw holding them to the deck lid. Remove those two screws and lift upward on the seat spring. The top two clips just slide into slots at an angle to hold the top of the rumble backrest tight against the deck lid. Since the clips do slide into the lid at an angle, you may need to jerk up on the backrest with a little force to jarr it loose from the deck lid.