Jake I did use the yellow speedo/reverse override button until I saw RPMs. It does say zero when trying to turn it over. However I’m not getting spark.
You should be seeing like 500rpm +/- when cranking, spark or not. I’d bet money you need at least a crank position sensor. They’re $14 on amazon and super easy to replace. I can send you the link if you need. Sounds like you may have more than one problem going on however.
Edit: It’s been a couple years since I went through this with mine. But the more I think about it, I don’t think I had spark either. I just dug through my old amazon orders and I had ordered new plug, wire, coil pack. Funny thing is they didn’t fix anything for me. And a couple days later I have an order for the CP sensor. With your machine reading 0 you need the sensor for sure. And I’d be willing to bet you’ll have spark after as well.