The New Holland Workmaster 25S tractor engine horsepower is 24.7 hp | 18.4 kW, and PTO horsepower is 17.2 hp | 12.8 kW.
Engine HP24.7 hp | 18.4 kW
PTO HP17.2 hp | 12.8 kW
PTO Transfer69.6%
Displacement77.2 ci | 1.3 L
New Holland Workmaster 25S Horsepower Specs
Engine gross horsepower
24.7 hp | 18.4 kW
PTO horsepower claimed
17.2 hp | 12.8 kW
New Holland Workmaster 25S Useful Horsepower Calculations
PTO-to-engine power transfer
69.6% of engine hp reaches the PTO
Engine size per PTO horsepower
4.5 ci per PTO hp
PTO horsepower per liter
13.2 PTO hp per L
Engine size per engine horsepower
3.1 ci per engine hp
Engine horsepower per liter
19 engine hp per L
Rated speed per PTO horsepower
174.4 rpm per PTO hp
New Holland Workmaster 25S Engine Specs
Displacement
77.2 ci | 1.3 L
Bore and stroke
3.15×3.30 inches | 80 x 84 mm
Rated RPM
3000
New Holland Workmaster 25S Fuel, Cooling, Starting & Service Specs
Starter volts
12
Battery volts
12
New Holland Workmaster 25S Horsepower Comparison Charts
Engine horsepower comparison
This model
24.7 hp
Average
35 hp
Low
15 hp
High
60 hp
PTO horsepower comparison
This model
17.2 hp
Average
28 hp
Low
12 hp
High
50 hp
Displacement comparison
This model
77.2 ci
Average
110 ci
Low
50 ci
High
180 ci
Rated RPM comparison
This model
3,000 rpm
Average
2,400 rpm
Low
1,800 rpm
High
3,000 rpm
Engine size per PTO HP
This model
4.5 ci/hp
Average
3.1 ci/hp
Low
1.8 ci/hp
High
5 ci/hp
Benchmarks use practical low, average and high ranges for the compact and small utility tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
New Holland Workmaster 25S Horsepower FAQ
How much horsepower does the New Holland Workmaster 25S have?
The listed engine output is 24.7 hp, below the 35 hp benchmark average. That is a lower-power result, so the smarter match is lighter implements and jobs that do not demand more than about 24.7 hp.
How much PTO horsepower does the New Holland Workmaster 25S have?
The listed PTO output is 17.2 hp, below the 28 hp benchmark average. For real use, size PTO implements below or near 17.2 hp rather than using a bigger engine-horsepower number.
How much engine power reaches the PTO on the New Holland Workmaster 25S?
The PTO-to-engine transfer works out to 69.6%, from 24.7 engine hp to 17.2 PTO hp. That is a noticeable drop, so implement sizing should be conservative.
How big is the New Holland Workmaster 25S engine?
The engine displacement is 77.2 ci, below the 110 ci benchmark average. Smaller displacement usually means less engine size behind each horsepower number.
Is the New Holland Workmaster 25S engine stressed for its PTO horsepower?
The engine has about 4.5 cubic inches per PTO hp, using 77.2 ci and 17.2 PTO hp. That points to a larger-displacement, lower-stress style setup.
How much PTO horsepower per liter does the New Holland Workmaster 25S make?
The output density is about 13.2 PTO hp per liter, using 17.2 PTO hp and 1.3 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
What rpm is the New Holland Workmaster 25S rated at?
The rated speed is 3,000 rpm, above the 2,400 rpm benchmark average. A higher 3,000 rpm rating can make power well but may feel busier under load.
Official information note
Horsepower and engine specs can vary by year, market, engine option, fuel system, test standard and tractor configuration. Check the operator manual, spec plate, parts book and official newholland.com website before buying parts, sizing implements or making repair decisions.
