Friend, precisely, you move as if you are accelerating and there you take it out, depending on the car can be easier or more difficult but that is the general shape, the clean contacts is mainly used to clean circuits without damaging them or to clean the contacts of the connectors such as the connectors of the sensors or the IAC valve, but it does not serve to improve the spark plugs or handle the starter. Do not croe that is a good idea. The starter engine is large and I don't think you can disassemble it, it weighs a lot. Or maybe you refer to the solenoid that is smaller, there if you already depend on what car you have to see if it is accessible or not.