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Briggs & Stratton 1450 Series Horizontal OHV Engine with Electric Start — 305cc, 3/4in. x 2 21/32in. Shaft, Model# 20S257-0124-F1
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Briggs & Stratton 1450 Series Horizontal OHV Engine with Electric Start — 305cc, 3/4in. x 2 21/32in. Shaft, Model# 20S257-0124-F1

Item# 24591

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Estimated Delivery: 6 - 11 Business Days
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Manufacturer's Warranty: 2 years consumer use / 1 year commercial use

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Product Summary


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Briggs & Stratton 1450 Series industrial/commercial horizontal OHV engine produces 14.5 ft.-lbs. Gross Torque to get the job done. Standard 3/4in. shaft is designed for Troy-Bilt tillers, log splitters, compressors, pressure washers, blowers and more. Compact overhead valve design runs cooler and cleaner, delivering more power, longer engine life and improved fuel economy. High-flow cylinder head produces 20% more power than conventional engines, increases fuel efficiency and significantly reduces emissions. This engine has fast fuel delivery and electric start for effortless starts and smooth operation. CARB compliant engine is good for sale in all 50 states, including California.

What's Included

  • (1) Engine with electric start, Model# 20S237-1533-F1

Features + Benefits

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  • 14.5 ft.-lbs. Gross Torque
  • OHV design for cooler operation, longer valve life
  • Dura-Bore™ cast iron cylinder sleeve withstands wear and abuse while providing improved oil control
  • PTO ball bearing
  • Flow-Tek flywheel design
  • Permanent mold piston
  • Self-lubricating heavy-duty bearing of steel-backed Teflon-coated bronze to withstand load and reduce wear
  • Mechanical governor controls throttle to deliver more power for tough chores
  • Maintenance-free Magnetron® electronic ignition for quick, dependable starts
  • Float feed carburetor provides the correct amount of fuel for one-pull starts and smooth operation
  • Dual-Clean™ premium air filter
  • Electric start with recoil backup
  • Recoil start has auto compression release
  • Comfort-Tek pull handle
  • Removable rewind
  • Fuel shutoff valve makes it easy to shut off fuel flow for safe transportation
  • 4-qt. fuel tank for long run times
  • Dura-Lube™ gear-driven splash lubrication system continuously supplies oil to all internal parts
  • Super Lo-Tone muffler reduces noise levels and improves tonal quality
  • Approx. mounting base dim. 7 11/16in. x 3 15/16in.
  • Flange mount bolt circles: 3 5/8in., 5in., 6 1/2in.
  • 50-state compliant engine

Key Specs

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Item#24591
Ship Weight65.0 lbs
Engine Displacement (cc)305
Start TypeRecoil or electrical
ApplicationTiller, blower, compressor, log splitter, pressure washer
Engine TypeOHV 1450 Series
Torque (ft./lbs.)14.5
Shaft OutputHorizontal
Crankshaft3/4 x 2 21/32
Shaft Diameter (in.)3/4
Shaft Length (in.)2 21/32
Shaft Keyway (in.)3/16
Shaft End Tapped (Diameter (in.)/Threads per inch)3/8–24
Shaft Rotation (From PTO Shaft Side)Counterclockwise
Gear ReductionNo
PTO Height (in.)4 11/64
Bearing TypeBall
Cylinders (qty.)1
Cylinder BoreCast iron
Bore x Stroke (in.)3.12 x 2.44
Cooling SystemAir cooled
Air Cleaner TypeDual element
Fuel TankYes
Fuel TypeGas
Fuel Tank Capacity (qt.)4
Fuel PumpNo
Fuel FilterYes
Oil Capacity (qt.)0.875
Lubrication SystemSplash
Low Oil AlertNo
Low Oil ShutdownNo
Ignition SystemElectronic
Governor SystemMechanical
CarburetorFloat
Throttle ControlManual, remote, adjustable (constant speed)
Choke ControlManual
Max. RPM3,600
Charging System Amps3A DC
Muffler IncludedYes
Flywheel BrakeNo
Auto Compression ReleaseYes
Bolt Circle (in.)3 5/8, 5, 6 1/2
Mounting Base L x W (in.)7 11/16 x 3 15/16
Mounting Bolt Pattern L x W (in.)7 11/16 x 3 15/16
Dimensions L x W x H (in.)13 x 16 x 16 1/2
EPA/CARB Approval (California Air Resource Board)Yes

Additional Information

Engine Specs

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Extended Warranty

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Service Protection Plus

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

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Briggs & Stratton 1450 Series Horizontal OHV Engine with Electric Start — 305cc, 3/4in. x 2 21/32in. Shaft, Model# 20S257-0124-F1 The price is $629.99.
Briggs & Stratton 1450 Series Horizontal OHV Engine with Electric Start — 305cc, 3/4in. x 2 21/32in. Shaft, Model# 20S257-0124-F1
(Not Yet Rated - New)
Item# 24591
Factory Shipped —
Estimated Delivery: 6 - 11 Business Days
Only $629.99
Hide Similarities
Engine Displacement (cc)
250 305 305 342 305
Start Type
Recoil Recoil Recoil Recoil Recoil or electrical
Application Tiller, compressor, edger, log splitter Tiller, blower, compressor, log splitter, pressure washer Tiller, blower, compressor, log splitter, pressure washer Tiller, compressor, log splitter Tiller, blower, compressor, log splitter, pressure washer
Engine Type OHV 1150 Series OHV 1450 Series Vanguard Commercial Power OHV OHV 1650 Series OHV 1450 Series
Rated Power (HP) - - 10 Manufacturer no longer rates this engine by HP -
Torque (ft./lbs.)
11 1/2 14.5 - 15.50 14.5
Shaft Output
Horizontal Horizontal Horizontal Horizontal Horizontal
Crankshaft 1 x 2 7/8 3/4 x 2 21/32 1 x 2 29/32 - 3/4 x 2 21/32
Shaft Diameter (in.) 1 3/4 1 1 3/4
Shaft Length (in.) 2 7/8 2 21/32 2 29/32 2 21/32 2 21/32
Shaft Keyway (in.)
1/4 3/16 1/4 1/4 3/16
Shaft End Tapped (Diameter (in.)/Threads per inch) 3/8–24 3/8–24 3/8–24 7/16–20 3/8–24
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise Counterclockwise Counterclockwise Counterclockwise
Gear Reduction
No No No - No
PTO Height (in.)
4 3/16 4 11/64 4 11/64 - 4 11/64
Bearing Type
Plain Ball Dual ball - Ball
Cylinders (qty.)
1 1 1 1 1
Cylinder Bore
Aluminum Cast iron Cast iron Cast iron Cast iron
Bore x Stroke (in.)
2.97 x 2.20 3.12 x 2.44 3.12 x 2.44 3.3 x 2.44 3.12 x 2.44
Cooling System
Air cooled Air cooled Air cooled Air cooled Air cooled
Air Cleaner Type
Pleated paper w/foam pre-cleaner Dual element High mount cardridge w/pre-cleaner Automotive type foam Dual element
Fuel Tank Yes Yes Yes Yes Yes
Fuel Type Gas Gas Gas Gasoline Gas
Fuel Tank Capacity (qt.)
3 4 3.5 4 4
Fuel Pump
No No No - No
Fuel Filter
No Yes Yes - Yes
Oil Capacity (qt.)
0.625 26–28 oz. 0.875 0.82–.088 (26–28 oz.) 0.875
Lubrication System
Splash Splash Splash - Splash
Low Oil Alert
No No Yes - No
Low Oil Shutdown
No - Yes - No
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Mechanical Mechanical Mechanical - Mechanical
Carburetor
Float Float Float Float Float
Throttle Control
Manual, remote, adjustable (constant speed) Manual, remote, adjustable (constant speed) Manual, remote, adjustable (constant speed) - Manual, remote, adjustable (constant speed)
Choke Control
Manual Manual Manual - Manual
Max. RPM
3,800 3,600 3,600 3,600 3,600
Charging System Amps - - - - 3A DC
Muffler Included
Yes Yes Yes Yes Yes
Flywheel Brake
No No No - No
Auto Compression Release
Yes Yes Yes - Yes
Bolt Circle (in.)
3 5/8 3 5/8, 5, 6 1/2 3 5/8, 5, 6 1/2 3 5/8, 5, 6 1/5 3 5/8, 5, 6 1/2
Mounting Base L x W (in.)
6 3/8 x 3 1/8 7 11/16 x 3 15/16 7 11/16 x 3 15/16 - 7 11/16 x 3 15/16
Mounting Bolt Pattern L x W (in.) 7 x 4 7 11/16 x 3 15/16 7 11/16 x 3 15/16 7 3/4 x 4 7 11/16 x 3 15/16
Dimensions L x W x H (in.)
18 x 17 x 20 13 x 16 x 16 1/2 12 15/32 x 16 7/16 x 15 31/32 16 x 16 x 16 13 x 16 x 16 1/2
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes