$50 · BSR 810 Turntable Project to undertake?

Ultra rare and highly rated from the mid ‘70’s; I didn’t know that BSR ever made any high end transcription tables, but this is one! It looks to be (almost) complete with the wooden base, dust cover and cartridge sled included. I’ve got it working, but even with the help of the service manual, I can’t figure out the cycling mechanism. It’s pretty clean and compares to an Elac or Dual of the day…..if you are good with mechanical drives, are an actual old school tech or just want to take a run at it to try your hand, it’d be a spectacular “show-off” piece once completed…..$ or trade offers considered.