Close

Close
Close
Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5
Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5
 
 
Zoom Reset
Zoom Out
Zoom In
View full screen
Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5
 

Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5

Item# 24921

Only $529.99
Guaranteed Lowest Prices

Add to Cart Item in Cart
Add to Wish List Item In Wish List
In Stock Online
Calculate Shipping
Check Store Availability
Ships Truck (81.0 lbs)
Special unloading requirements
Manufacturer's Warranty: 2 years consumer use / 1 year commercial use
Customer Product Rating
 

Product Details

This Briggs & Stratton Powerbuilt™ Vertical Replacement OHV Engine with electric start is a perfect replacement engine for riding lawn mowers and lawn tractors that require electric start engines. U.S.A.

Features for Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5

Features + Benefits

  • Gear-driven DuraLube™ splash lubrication system bathes all internal engine parts with oil
  •  Easy access to air filter thanks to tool less cover
  •  Heavy-duty teflon-coated sleeve bearing withstands load and reduces wear
  •  Automotive-style dipstick makes checking engine oil levels easy
  •  Cast iron cylinder sleeve for extended life
  • Float carburetor for consistently easy starts
  • Electronic ignition for quick, dependable starts
  •  Dual element air cleaner provides protection for longer engine life
  • OHV design for cooler operation and longer valve life
  • AVS® patented balancing system for smoother performance

Key Specs

Item#24921
Ship Weight81.0 lbs
Engine Displacement (cc)500
Start TypeElectric
ApplicationRiding lawn mowers, lawn tractors
Engine TypeOHV
Rated Power (HP)17 1/2
Shaft OutputVertical
CrankshaftTapped 7/16-20, Keyway, 1 in. dia.
Shaft Diameter (in.)1
Shaft Length (in.)3 5/32
Shaft Keyway (in.)1/4
Shaft End Tapped (Diameter (in.)/Threads per inch)7/16-20
Shaft Rotation (From PTO Shaft Side)Counterclockwise
Gear ReductionNo
Bearing TypePlain
Cylinders (qty.)1
Cylinder BoreCast iron
Bore x Stroke (in.)3.56 x 3.06
Compression Ratio8.5 : 1
Cooling SystemAir cooled
Air Cleaner TypeDual element
Fuel TankNot included
Fuel TypeGasoline
Fuel Tank Capacity (qt.)17
Fuel PumpNo
Fuel FilterYes
Oil Capacity (qt.)1 1/2
Lubrication SystemSplash
Low Oil AlertNo
Low Oil ShutdownNo
Ignition SystemElectronic
Governor SystemMechanical
CarburetorFloat
Throttle ControlRemote
Choke ControlChoke-A-Matic
Max. RPM3,300
Charging System Amps9
Muffler IncludedYes
Flywheel BrakeNo
Auto Compression ReleaseYes
Bolt Circle (in.)10
Dimensions L x W x H (in.)19 x 16 x 13
EPA/CARB Approval (California Air Resource Board)Yes

Product Manual

Manual (pdf)

What's Included

  •  (1) Engine

Manufacturer Warranty

2 years consumer use / 1 year commercial use

Additional Information

Engine Specs (pdf)
Shop Briggs & Stratton
Shop Briggs & Stratton
Made in the USA

Customer Reviews

Top of page
Print Reviews for Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5

Product Question + Answer

Top of page

Top Accessories

Top of page

Products We Recommend

 

Fuel Cans

Scepter Polyethylene Gas Can — 5-Gallon Capacity, Model# 05096 Scepter Polyethylene Gas Can — 5-Gallon Capacity, Model# 05096
Item# 26681
 In Stock Online
Was $19.99
Sale $15.99
 Add to Cart

Extended Warranty

Top of page
Service Protection Plus

Manufacturer Warranty: 2 years consumer use / 1 year commercial use

Protect Your Purchase Beyond The Manufacturer's Warranty With Service Protection Plus!

To add an extended warranty to this item, select the plan you'd like, then scroll to the top of the page and click the "Add to Cart" button.

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Extended Warranty Repair Plan
Only $69.99
Only $109.99
Extended Warranty + Accidental Damage Repair Plan
Only $99.99
Only $169.99
View + Compare All Plans

Compare with Most Popular 391cc - 600cc Briggs & Stratton Vertical Engines

Top of page

See All 391cc - 600cc Briggs & Stratton Vertical Engines

 
Currently Viewing
 
 
 
 
Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5 The price is $529.99.
Briggs & Stratton Powerbuilt Vertical Replacement OHV Engine with Electric Start — 500cc, 1in. Dia. x 3 5/32in.L Shaft, Model# 31C707-3026-G5
NOT YET RATED   (Not Yet Rated - New)
Item# 24921
Only $529.99
Add to Cart
(16)
Item# 70421
Was $579.99
Sale $549.99
Add to Cart
NOT YET RATED   (Not Yet Rated - New)
Item# 701753
Only $899.99
Add to Cart
NOT YET RATED   (Not Yet Rated - New)
Item# 70181
Only $1299.99
Add to Cart
Hide Similarities
Engine Displacement (cc) 500 540 500 570  
Start Type Electric Electric Electric Electric  
Application Riding lawn mowers, lawn tractors Riding lawn mowers, lawn tractors Riding lawn mowers, lawn tractors Commercial mower, lawn tractor  
Engine Type OHV Intek–OHV Intek–OHV Vanguard V-Twin OHV  
Rated Power (HP) 17 1/2 21 17.5 18  
Shaft Output Vertical Vertical Vertical Vertical  
Crankshaft Tapped 7/16-20, Keyway, 1 in. dia. Tapped 7/16–20, keyway, 1 in. dia. - -  
Shaft Diameter (in.) 1 1 1 1  
Shaft Length (in.) 3 5/32 3 5/32 3 5/32 3 5/32  
Shaft Keyway (in.) 1/4 1/4 1/4 1/4  
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16-20 7/16–20 7/16–20 7/16–20  
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise Counterclockwise Counterclockwise  
Gear Reduction No - - -  
Bearing Type Plain Plain Plain Plain  
Cylinders (qty.) 1 1 1 2  
Cylinder Bore Cast iron Cast iron Cast iron Cast iron  
Bore x Stroke (in.) 3.56 x 3.06 3.70 x 3.06 3.56 x 3.06 2.83 x 2.76  
Compression Ratio 8.5 : 1 - - -  
Cooling System Air cooled Air cooled Air cooled Air cooled  
Air Cleaner Type Dual element Dual element Dual element Dual element  
Fuel Tank Not included Not included Not included Not included  
Fuel Type Gasoline Gasoline Gasoline Gasoline  
Fuel Tank Capacity (qt.) 17 - - -  
Fuel Pump No Yes, Pulse Yes, (Pulse) Yes  
Fuel Filter Yes Yes - -  
Oil Capacity (qt.) 1 1/2 1.5 (48 oz.) 1.5 (48 oz.) 1.5 (48 oz.)  
Lubrication System Splash Full pressure Splash Full pressure  
Low Oil Alert No No No Yes  
Low Oil Shutdown No No - -  
Ignition System Electronic Electronic Electronic Electronic  
Governor System Mechanical Mechanical Mechanical Mechanical  
Carburetor Float Float Float Float  
Throttle Control Remote Remote Remote Remote  
Choke Control Choke-A-Matic Manual - -  
Max. RPM 3,300 3,300 3,300 3,300  
Charging System Amps 9 9 9 16  
Muffler Included Yes Yes Yes No  
Flywheel Brake No - - -  
Auto Compression Release Yes Yes No No  
Bolt Circle (in.) 10 10 10 10  
Dimensions L x W x H (in.) 19 x 16 x 13 19 x 16 1/2 x 13 19 1/2 x 16 1/5 x 12 1/2 16 7/8 x 16 1/16 x 13 1/8  
EPA/CARB Approval (California Air Resource Board) Yes Yes Yes Yes  

See All 391cc - 600cc Briggs & Stratton Vertical Engines