By the book...ish. ;)
The smaller Kubota motors (ZD28, RTV's) purge themselves, somehow. You just change the filter, fire it up and it runs ruff for a few seconds and then is fine. The bigger ones (this tractor and the skid loader...I think) need to be bled manually. The Deeres do too. The process on them is similar; the details are just a little different. I guess that should be an upcoming video.