Ready to run filter - what to do with these screews?

[Seasea47]

I have an older Triton TR 100 sand filter. I usually hire someone to open and close, but this year decided to do it myself. Got the cover off and the pool itself ready to go but when I went to turn on the filter, I noticed there were about four screws in the pump basket. I figured out where one of them goes on the filter, but I'm at a loss with the rest. Any ideas? I hate to have to call them to come out just for that!