PowerBuilt™

10.5 - 17.5 GROSS HORSEPOWER

A job well done at a great value. That's what PowerBuilt™ Series riding lawn mower engines deliver time after time. With a highly functional design featuring OHV (Overhead Valve) technology along with a simple-to-maintain configuration, PowerBuilt™ small engines stand the test of time in meeting your basic riding mower needs.

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Riding Lawn Mower Engine Reviews

Product Details

Dura-Bore™ Cast Iron Sleeve

Withstands wear and abuse.

Advanced Debris Management System

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

Tool-less Air Cleaner Cover

Easy access for filter changes.

Optional: Anti-Vibration System - AVS®

Provides a smoother ride and more comfort.

Advanced Formula Fuel Treatment & Stabilizer

Safeguards engines against ethanol damage and maintains fuel stability for up to 3 years.

See the full benefits of Advanced Formula Fuel Treatment.

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Use E10 or Less Engine Fuel

Look Before you pump fuel into your lawn mower and help avoid engine damage. Do not use any fuel containing greater than 10 percent ethanol (E10) in the engine on your outdoor power equipment.

Overhead Valve (OHV) Engine Design

OHV engines run cooler and cleaner for better fuel economy and longer engine life.

HP (gross) ** 10.50
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)
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 48.0
Oil Filter N/A
Starter Electric Start, Recoil Optional
Air Filter Cartridge Air Cleaner with Advanced Debris Management
Muffler Optional
Certified Power Rating Download Power Curve
Marketing Model 21R7

*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.

HP (gross) ** 11.50
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)
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 48.0
Oil Filter N/A
Starter Electric Start, Recoil Optional
Air Filter Cartridge Air Cleaner with Advanced Debris Management
Muffler Optional
Certified Power Rating Download Power Curve
Marketing Model 21R8

*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.

HP (gross) ** 13.50
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
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 48.0
Oil Filter N/A
Starter Electric start, recoil optional
Air Filter Cartridge Air Cleaner with Advanced Debris Management
Muffler Optional
Certified Power Rating Download Power Curve
Marketing Model 31R5

*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.

HP (gross) ** 14.50
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
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 48.0
Oil Filter N/A
Starter Electric start, recoil optional
Air Filter Cartridge Air Cleaner with Advanced Debris Management
Muffler Optional
Certified Power Rating Download Power Curve
Marketing Model 31R6

*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.

HP (gross) ** 15.50
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
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 48.0
Oil Filter N/A
Starter Electric start, recoil optional
Air Filter Cartridge Air Cleaner with Advanced Debris Management
Muffler Optional
Certified Power Rating Download Power Curve
Marketing Model 31R7

*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.

HP (gross) ** 16.50
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
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 48.0
Oil Filter N/A
Starter Electric start, recoil optional
Air Filter Cartridge Air Cleaner with Advanced Debris Management
Muffler Optional
Certified Power Rating Download Power Curve
Marketing Model 31R8

*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.

HP (gross) ** 17.50
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
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 48.0
Oil Filter N/A
Starter Electric start, recoil optional
Air Filter Cartridge Air Cleaner with Advanced Debris Management
Muffler Optional
Certified Power Rating Download Power Curve
Marketing Model 31R9

*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.

Manuals

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FAQs

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Maintenance How-To Articles

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