Im looking to set the miles on my 86 Sr5 cluster to 0 or the exact milage my truck is at. I wonder if anyone has done this with out braking anything...how?

 

I matched the odo on mine by disassembling the speedo, pulling the odo out, and spinning it down backwards with a cordless drill and a nylon brush from the dremmel kit.

Other folks have reported complete disassembly of the odo and just rotate the individual levers (you'll know what I'm talking about it when you pull it out), but that was more work for me.