2. FRAME COVERS/EXHAUST MUFFLER MXU 500 IRS FASTENER REMOVAL AND REINSTALLATION REMOVAL Depress the head of fastener center piece . Pull out the fastener. INSTALLATION Let the center piece stick out toward the head so that the pawls close. Insert the fastener into the installation hole. To prevent the pawl from damage, insert the fastener all the way into the installation hole Push in the head of center piece until it becomes flush with the fastener outside face. 2-3