The John Deere 4840 tractor has 157 hp engine horsepower and 180 hp PTO horsepower.
Engine horsepower157 hp
PTO horsepower180 hp
Drawbar horsepower151.2 hp
Rated RPM2,200 rpm
Torque440 lb-ft
Operating weight14,900 lb
John Deere 4840 Horsepower Details
Engine horsepower
157 hp
PTO horsepower
180 hp
Drawbar horsepower
151.2 hp
Rated engine RPM
2,200 rpm
Engine torque
440 lb-ft
Engine displacement
7.6 L
Engine cylinders
6 cylinders
Engine model
turbocharged intercooled
Operating weight
14,900 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
157 hp
Average
113.7 hp
Low
20 hp
High
310 hp
PTO horsepower comparison
This model
180 hp
Average
101.7 hp
Low
17 hp
High
280 hp
Drawbar horsepower comparison
This model
151.2 hp
Average
98.4 hp
Low
17 hp
High
250 hp
Operating weight comparison
This model
14,900 lb
Average
10,042.2 lb
Low
317.2 lb
High
27,180 lb
John Deere 4840 Extra Horsepower Notes
Horsepower note
The John Deere 4840 loses roughly 3.7% from engine horsepower to drawbar horsepower, which reflects drivetrain, traction and ground-contact losses.
PTO note
For PTO-driven work, the John Deere 4840’s practical rating is 180 hp, which fits large PTO-driven equipment where the implement horsepower requirement matters more than the engine rating.
Drawbar note
The John Deere 4840’s 151.2 hp drawbar rating is the better number for ground-pulling work than the 157 hp engine rating.
Power-to-weight note
Using 14,900 lb operating weight and 157 hp engine power, the John Deere 4840 comes out at roughly 94.9 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 4840 is listed with engine model turbocharged intercooled, 7.6 L displacement, 6 cylinders, rated at 2,200 rpm.
Torque / RPM note
Torque and rated speed on the John Deere 4840 are 440 lb-ft and 2,200 rpm, showing how the engine is set up to work under load.
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.
