I own a John Deere 261 Groomer....PTO.Three blade Belt drive...….Tea-20 handles it very well....both as a GROOMER as well in thick two foot grass.
My TEA-20 has no problem to RAISE and run a 4" BRUSHER...I had to replace the CLUTCH ASSEMLY.....Clutch was original from 1949.
From experimenting I now run both the 261 Groomer and the TWO blade Brusher 2" higher at the rear than the front...better job cutting, cleaning and yes less HP.
With the TWO blade 4' BRUSHER...the TEA-20 has to be ran at half a cut (BRUSHER WIDTH) so as to keep PTO at proper RPM in any grass above 24 "s.
I now use my MF FE 35 X Diesel on all heavy cutting as the MF 35 has the upgraded 3 cylinder Perkins Diesel Engine that develops a full 44 HP .
MY Ford 2-N actually is geared better on the GROOMER than the TEA-20.
Bob. North Western Alberta...