PXi Series Engines

PXi Series Engines

Professional-grade performance.

Our PXi Series V-Twin riding mower engines give you premium power and features to handle the big jobs. The enhanced components are extremely durable, and premium air, oil and fuel filters keep the engine running clean to extend engine life. Our optional starting technologies provide reliable, automotive-style starting in all weather conditions – from minus 20°F up to 120°F.

  • Advanced Debris Management System – Helps our engines run cleaner and longer by deflecting and ejecting grass and debris, providing a longer life.
  • Full Pressure Lubrication System – Continuously feeds oil through the premium oil filter and crankshaft bearing for enhanced durability and longer engine life.
  • Optional no choke starting with ReadyStart® for Ride.

20.0 - 25.0

Gross Horsepower (HP)

656 - 724cc

Displacement

Gas

Engine Fuel

64 - 67

Oil Capacity (oz)

Features

Made in the USA

Made in the USA of US and global parts.

Advanced Debris Management System

Keeps the engine clean by deflecting and ejecting grass and debris for a longer engine life.

Qualified 67% Longer Engine Life*

When compared to expected life standards of a Briggs & Stratton Intek™.

Full Pressure Lube System

Reduces component wear for longer engine life.

V-Twin Engine

For more power, comfort and durability.

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.

Specs

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Model Number
40S8
Gross Horsepower (ft-lbs)*
20
Engine Displacement (cc)
656
Number of Cylinders
V-Twin
Engine Configuration
Vertical Shaft
OHV Engine
true
Length (in)
19.1
Width (in)
18.2
Height (in)
14.3
Weight (lbs)
84
Bore (in)
2.97
Stroke (in)
2.89
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Full Pressure Lubrication
Oil Capacity (oz)
64
Oil Filter
Premium
Starter
Electric Start
Air Filter
Dual Element Cartridge with Advanced Debris Management
Muffler
N/A
Certified Power Rating
Fuel Shutoff Valve
Optional

* All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
44S6
Gross Horsepower (ft-lbs)*
22
Engine Displacement (cc)
724
Number of Cylinders
V-Twin
Engine Configuration
Vertical Shaft
OHV Engine
true
Length (in)
19.1
Width (in)
18.2
Height (in)
14.3
Weight (lbs)
84
Bore (in)
3.12
Stroke (in)
2.89
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Full Pressure Lubrication
Oil Capacity (oz)
64
Oil Filter
Premium
Starter
Electric Start
Air Filter
Dual Element Cartridge with Advanced Debris Management
Muffler
N/A
Certified Power Rating
Fuel Shutoff Valve
Optional

* All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
44S8
Gross Horsepower (ft-lbs)*
24
Engine Displacement (cc)
724
Number of Cylinders
V-Twin
Engine Configuration
Vertical Shaft
OHV Engine
true
Length (in)
19.1
Width (in)
18.2
Height (in)
14.3
Weight (lbs)
84
Bore (in)
3.12
Stroke (in)
2.89
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Full Pressure Lubrication
Oil Capacity (oz)
64
Oil Filter
Premium
Starter
Electric Start
Air Filter
Dual Element Cartridge with Advanced Debris Management
Muffler
N/A
Certified Power Rating
Fuel Shutoff Valve
Optional

* All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
44S9
Gross Horsepower (ft-lbs)*
25
Engine Displacement (cc)
724
Number of Cylinders
V-Twin
Engine Configuration
Vertical Shaft
OHV Engine
true
Length (in)
19.1
Width (in)
18.2
Height (in)
14.3
Weight (lbs)
84
Bore (in)
3.12
Stroke (in)
2.89
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Lubrication System
Full Pressure Lubrication
Oil Capacity (oz)
64
Oil Filter
Premium
Starter
Electric Start
Air Filter
Dual Element Cartridge with Advanced Debris Management
Muffler
N/A
Certified Power Rating
Fuel Shutoff Valve
Optional

* All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

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