Kubota l3410 front wheel size for R4 and Turf

[fishingbucks]

I have an l3410 with ag tires but also have a rear set of turf tires/wheels for it. I知 looking for a set of front wheels that will work with turf/r4. Does anybody know what size wheels they are for the front? Or, the kubota part number? I知 not interested in buying new from Kubota.

 

[AllDodge]

See page 38
http://www.kubotabooks.com/AutoIndex/index.php?dir=Tractor%20Owners%20Manuals/&file=L2800%20%26%20L3400%20Ops..pdf&AutoIndex=15bb42edfb1fdacc86668de83892c66d