4720 oil pan bolt size

[Zebrafive]

It appears to be a 22MM. How I found this went to John Deere parts
John Deere Parts Catalog

The drain plug part number is RE46687 and did a google search and found this
https://ezoildrainvalve.com/uploads/3/5/2/6/35266975/ez_comprehensive_chart.pdf

Here is the owners manual if you need it
OMLVU19619_E9

22mm is the thread size, M22, not the size for the hex head/wrench size. That is 27mm

I use a 1-1/16" on my 4720. dsb

That should work, 1.063" is the same as 27mm

I tried to use an adjustable wrench on it before my neighbor did. he is more persistent then me.
JD5210 I tried 22mm but it was too small. The neighbor who loosened it with the adjustable wrench measured it to be 27mm which is about the same as what dsb5610 said, 1 1/16?
I will try to get a replacement but at autozone since I get bad vibes at advance. Thanks TractorGuy.

Since the drain plug uses an o-ring, I would get it from JD; $8.40