Withdrawal
Disconnect the 1st chamber throttle potentiometer connector.
Remove the potentiometer holder by unscrewing the fastening screw.
Remove the potentiometer, in this case it is necessary to prevent the coupling 1 from falling out (see photo).
Check the condition of the coupling and replace it if necessary.
Installation
Replace the coupling 1 and install the potentiometer, paying attention to the position of the locking slots.
Install the potentiometer holder and tighten the screw securing it.
Connect the potentiometer connector.