The easiest way is to unbolt the S/C and take of the snout. Be careful of the STINKY oil inside the snout. Put some towels under the S/C before you open the snout. You will need to rent the snout tool from either ZZP Performance or Tim (Don't know if he rents them) and the pulley puller. Pop off the stock pulley and turn down the snout. Replace the oil and bolt it back together.