The 200 series have a granny low 1st gear you'll almost never wear that out. When I was plowing with that old Allis I had I always used 1st gear and WOT. I tried doing it in 2nd and 3rd, but they were simply too high to be safe on the tranny and engine.
F-250 XL RC/LB 4x2 Power Stroke Diesel
2010 John Deere
Z710A 48" cut
1999 John Deere
1985 John Deere
212 w/38" deck
1983 John Deere
420 w/54" hydraulic front blade
1974 John Deere
140, 54" hydraulic blade, 3pt. hitch, tandem disc, plow, 48" deck
1971 John Deere
112, 38" deck, all original, down for engine rebuild.
1967 IH Cub Cadet
124 w/creeper box, disc, plow
1947 Economy/Power King
Tractor S/N 590, fully restored.
Certified John Deere