This is a video I did to explain how to rebuild one of these 4 screw fuel pumps. It's not very long, but it may help someone that is a little reluctant to do the job at home. If you have any questions, please don't hesitate to ask. I noticed something that I left out, and that has to do with the pumps that use a 6 screw top cover. If your pump has that, when you order a kit, make sure to mention that fact.