The John Deere 20A tractor has 21 hp engine horsepower and 17 hp PTO horsepower.
Engine horsepower21 hp
PTO horsepower17 hp
Drawbar horsepower21 hp
Rated RPM2,400 rpm
Torque53 lb-ft
Operating weight1,654 lb
John Deere 20A Horsepower Details
Engine horsepower
21 hp
PTO horsepower
17 hp
Drawbar horsepower
21 hp
Rated engine RPM
2,400 rpm
Engine torque
53 lb-ft
Engine displacement
58.2 cu in
Engine cylinders
2 cylinders
Engine model
Lombardini 1.0L 2-cylinder
Operating weight
1,654 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
21 hp
Average
99 hp
Low
5 hp
High
640 hp
PTO horsepower comparison
This model
17 hp
Average
86.2 hp
Low
5 hp
High
490 hp
Drawbar horsepower comparison
This model
21 hp
Average
87.8 hp
Low
5.5 hp
High
640 hp
Operating weight comparison
This model
1,654 lb
Average
9,181 lb
Low
320 lb
High
56,320 lb
John Deere 20A Extra Horsepower Notes
Horsepower note
For power comparison, the John Deere 20A sits at 21 hp engine horsepower with 17 hp available at the PTO.
PTO note
The John Deere 20A has 17 hp available at the PTO, placing it in the low-horsepower compact tractor PTO range rather than a heavy-implement class.
Drawbar note
The John Deere 20A separates pulling work from PTO work with 21 hp drawbar horsepower and 17 hp PTO horsepower.
Power-to-weight note
Using 1,654 lb operating weight and 21 hp engine power, the John Deere 20A comes out at roughly 78.8 lb per engine horsepower, meaning it is light for its power, so traction and ballast can become the limiting factor before engine power.
Engine note
For engine identification, the John Deere 20A is listed with engine model Lombardini 1.0L 2-cylinder, 58.2 cu in displacement, 2 cylinders, rated at 2,400 rpm.
Torque / RPM note
The John Deere 20A combines 53 lb-ft of torque with a 2,400 rpm rated engine speed, which fits a typical tractor rated-speed range.
Official information note
Mistakes do happen. Horsepower, PTO horsepower, drawbar horsepower, weight and engine specs can change by year, market, engine option, cab, transmission and test standard. Please check the operator manual and official deere.com website for official information.
