E Series™ Engines

E Series™ Engines

Reliable performance. Exceptional value.

Ideal for smaller acreage lawns, our E Series riding mower engines are powerful, yet lightweight. Their performance-enhancing features deliver more than you’d expect, at a great value.

  • Advanced Debris Management – Helps our engines run cleaner and longer by deflecting and ejecting grass and debris, providing a longer life.
  • Anti-Vibration System® (AVS®) – Counterbalanced internal components give you a smoother ride and save wear and tear on your engine, your equipment – and you.
  • Splash Lubrication System – As the engine is running, a spinning gear with paddles slings oil on critical components for vital lubrication and reduced wear.
  • Made in the USA of US and global parts.

344 - 500cc

Displacement

Gas

Engine Fuel

Features

Made in the USA

Made in the USA of US and global parts.

Anti-Vibration System - AVS®

Provides a smoother ride and more comfort.

Advanced Debris Management System

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

Specs

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Model Number
21R7
Torque (ft-lbs, gross)*
10.5
Engine Displacement (cc)
344
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
17.8
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
66
Bore (in)
3.44
Stroke (in)
2.26
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
0.7 (optional)
Oil Capacity (oz)
48
Lubrication System
Dura-Lube Splash Lubrication
Oil Filter
N/A
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Fuel Shutoff Valve
Optional
Certified Power Rating
Marketing Oil Capacity
48
Marketing Number of Cylinders
1
Marketing Gross Horsepower
10.5 - 17.5
Gross Horsepower
10.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
21R8
Engine Displacement (cc)
344
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
17.8
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
66
Bore (in)
3.44
Stroke (in)
2.26
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
0.7 (optional)
Oil Capacity (oz)
48
Lubrication System
Dura-Lube Splash Lubrication
Oil Filter
N/A
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Fuel Shutoff Valve
Optional
Certified Power Rating
Marketing Oil Capacity
48
Marketing Number of Cylinders
1
Marketing Gross Horsepower
10.5 - 17.5
Gross Horsepower
11.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
31R5
Torque (ft-lbs, gross)*
13.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Oil Capacity (oz)
48
Lubrication System
Dura-Lube Splash Lubrication
Oil Filter
N/A
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Fuel Shutoff Valve
Optional
Certified Power Rating
Marketing Oil Capacity
48
Marketing Number of Cylinders
1
Marketing Gross Horsepower
10.5 - 17.5
Gross Horsepower
13.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
31R6
Torque (ft-lbs, gross)*
14.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Oil Capacity (oz)
48
Lubrication System
Dura-Lube Splash Lubrication
Oil Filter
N/A
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Fuel Shutoff Valve
Optional
Certified Power Rating
Marketing Oil Capacity
48
Marketing Number of Cylinders
1
Marketing Gross Horsepower
10.5 - 17.5
Gross Horsepower
14.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
31R7
Torque (ft-lbs, gross)*
15.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Oil Capacity (oz)
48
Lubrication System
Dura-Lube Splash Lubrication
Oil Filter
N/A
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Fuel Shutoff Valve
Optional
Certified Power Rating
Marketing Oil Capacity
48
Marketing Number of Cylinders
1
Marketing Gross Horsepower
10.5 - 17.5
Gross Horsepower
15.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
31R8
Torque (ft-lbs, gross)*
16.5
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Oil Capacity (oz)
48
Lubrication System
Dura-Lube Splash Lubrication
Oil Filter
N/A
Starter
Electric Start, Recoil Optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Fuel Shutoff Valve
Optional
Certified Power Rating
Marketing Oil Capacity
48
Marketing Number of Cylinders
1
Marketing Gross Horsepower
10.5 - 17.5
Gross Horsepower
16.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
31R9
Engine Displacement (cc)
500
Number of Cylinders
Single
Engine Configuration
Vertical Shaft
OHV Engine
Yes
Length (in)
18.9
Width (in)
15.5
Height (in)
12.9
Weight (lbs)
77
Bore (in)
3.56
Stroke (in)
3.06
Engine Fuel
Gasoline
Fuel Tank Capacity (gal)
N/A
Oil Capacity (oz)
48
Lubrication System
Dura-Lube Splash Lubrication
Oil Filter
N/A
Starter
Electric start, recoil optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Fuel Shutoff Valve
Optional
Certified Power Rating
Marketing Oil Capacity
48
Marketing Number of Cylinders
1
Marketing Gross Horsepower
10.5 - 17.5
Gross Horsepower
17.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

Model Number
21R7
21R8
31R5
31R6
31R7
31R8
31R9
Torque (ft-lbs, gross)*
10.5
13.5
14.5
15.5
16.5
Engine Displacement (cc)
344
344
500
500
500
500
500
Number of Cylinders
Single
Single
Single
Single
Single
Single
Single
Engine Configuration
Vertical Shaft
Vertical Shaft
Vertical Shaft
Vertical Shaft
Vertical Shaft
Vertical Shaft
Vertical Shaft
OHV Engine
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Length (in)
17.8
17.8
18.9
18.9
18.9
18.9
18.9
Width (in)
15.5
15.5
15.5
15.5
15.5
15.5
15.5
Height (in)
12.9
12.9
12.9
12.9
12.9
12.9
12.9
Weight (lbs)
66
66
77
77
77
77
77
Bore (in)
3.44
3.44
3.56
3.56
3.56
3.56
3.56
Stroke (in)
2.26
2.26
3.06
3.06
3.06
3.06
3.06
Engine Fuel
Gasoline
Gasoline
Gasoline
Gasoline
Gasoline
Gasoline
Gasoline
Fuel Tank Capacity (gal)
0.7 (optional)
0.7 (optional)
N/A
N/A
N/A
N/A
N/A
Oil Capacity (oz)
48
48
48
48
48
48
48
Lubrication System
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Dura-Lube Splash Lubrication
Oil Filter
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Starter
Electric Start, Recoil Optional
Electric Start, Recoil Optional
Electric Start, Recoil Optional
Electric Start, Recoil Optional
Electric Start, Recoil Optional
Electric Start, Recoil Optional
Electric start, recoil optional
Air Filter
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Cartridge Air Cleaner with Advanced Debris Management
Muffler
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Fuel Shutoff Valve
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Marketing Oil Capacity
48
48
48
48
48
48
48
Marketing Number of Cylinders
1
1
1
1
1
1
1
Marketing Gross Horsepower
10.5 - 17.5
10.5 - 17.5
10.5 - 17.5
10.5 - 17.5
10.5 - 17.5
10.5 - 17.5
10.5 - 17.5
Gross Horsepower
10.5
11.5
13.5
14.5
15.5
16.5
17.5

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.
**All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

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