PXi Series Engines

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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.

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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

Model Number

40S8

Gross Horsepower (ft-lbs)*

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)

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)

Oil Filter

Premium

Starter

Electric Start

Air Filter

Dual Element Cartridge with Advanced Debris Management

Muffler

N/A

Certified Power Rating

Download Power Curve

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)*

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)

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)

Oil Filter

Premium

Starter

Electric Start

Air Filter

Dual Element Cartridge with Advanced Debris Management

Muffler

N/A

Certified Power Rating

Download Power Curve

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)*

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)

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)

Oil Filter

Premium

Starter

Electric Start

Air Filter

Dual Element Cartridge with Advanced Debris Management

Muffler

N/A

Certified Power Rating

Download Power Curve

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)*

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)

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)

Oil Filter

Premium

Starter

Electric Start

Air Filter

Dual Element Cartridge with Advanced Debris Management

Muffler

N/A

Certified Power Rating

Download Power Curve

Fuel Shutoff Valve

Optional

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

Model Number

40S8

44S6

44S8

44S9

Gross Horsepower (ft-lbs)*

Engine Displacement (cc)

656

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)

Bore (in)

2.97

3.12

Stroke (in)

2.89

Engine Fuel

Gasoline

Fuel Tank Capacity (gal)

N/A

Lubrication System

Full Pressure Lubrication

Oil Capacity (oz)

Oil Filter

Premium

Starter

Electric Start

Air Filter

Dual Element Cartridge with Advanced Debris Management

Muffler

N/A

Certified Power Rating

Download Power Curve

Fuel Shutoff Valve

Optional

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

Support

Tackle Your Yard

At the end of the day, a job well done is its own reward. Our equipment is there to help make it happen. It's easy to master, durable and ready for a challenge. Just like you.