Degelman has a PDF with a table with the frame numbers. You can download PDF from website. I will try to attach it here. Page 73-74 should get you close to the Deere 9000 series and the R series numbers Bill Edit- quick answer looks like the tractor mounts are different. I didnt study the intermediate frames.
Edited by BillNNY 8/31/2023 06:50
Attachments
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 7900 7200 degelman blade selection-chart.pdf (631KB - 77 downloads)
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Degelman blade mounts
