how do i replace the starter on a toyota corolla 1993

Easiest way to do it is to get at it from underneath so you are going to have to raise the car, otherwise you will have to remove the manifold which I don't think you are going to want to do. Don't forget to disconnect the battery. Once you've got the car up the starter is located underneath the throttle body. Once you have gone through all of that you can release a few bolts and cables and replace it. If you did decide to go at it without lifting the car you need to remove the air filter and the rubber belt that connects to the throttle body. The starter is located underneath all of that. I don't have any diagrams of it but it seems like difficult task.