Oh, and the tractors imported under US names tend to inflate hp ratings - i.e. an Iseki TX1500 machine is a Bolens G172 machine with "17" hp while the Iseki TX1500 has "15" PS which is supposedly the PTO power which, at times, makes sense but not always. A "PS" by the way is equivalent to 735 watts while a US "hp" is defined as 746 watts. In your case, Iseki models your machine as a "TX2140". I'm guessing this means "TX" version "2" (?) (3-cylinder engine, etc.), 14 PS PTO, and I can't guess what the "0" indicates.
The Japenese manuals are confusing for power ratings for the TX series tractors. You'll notice they list "engine power", in the case of the Mitsubishi KE75, as 14.8 PS which could in all reality be PTO power. However, they also list "engine torque" as 4.0 kg*m @ 2300 rpm which does not really make sense for PTO outputs since there are multiple speed settings and consequently multiple torque outputs.