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Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1
Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1
 
 
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Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1
 

Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1

Item# 172791

Only $249.99
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Factory Shipped —
Delivery Time: 6 - 11 Business Days
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Not Available in Stores
Manufacturer's Warranty: 24 months consumer / 90 day commercial
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Product Details

The Briggs & Stratton Pro-Series™ OHV engines were designed to provide an experience that combines power, performance, features and size. This engine offers consumers and professionals commercial-grade features including easier starting, smooth and quiet operation, increased durability and longer life. U.S.A.

Features for Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1

Features + Benefits

  • ReadyStart recoil ignition starts with no prime or choke
  • Certified to CARB Tier III
  • Meets EPA 2012 phase 3 standards

Key Specs

Item#172791
Ship Weight29.0 lbs
Engine Displacement (cc)190
Start TypeRecoil
ApplicationWalk mower
Engine TypeProfessional 875 Series OHV
Rated Power (HP)Manufacturer no longer rates this engine by HP
Torque (ft./lbs.)8.75
Shaft OutputVertical
Shaft Diameter (in.)25 mm
Shaft Length (in.)3 5/32
Shaft Keyway (in.)(2) Woodruff keys and 3/16-in. straight keyway
Shaft End Tapped (Diameter (in.)/Threads per inch)3/8–24
Shaft Rotation (From PTO Shaft Side)Counterclockwise
Bearing TypePlain
Cylinders (qty.)1
Cylinder BoreAluminum alloy
Bore x Stroke (in.)2.69 x 2.04
Cooling SystemAir cooled
Air Cleaner TypeCommercial-grade w/dual seal
Fuel TankYes
Fuel TypeGasoline
Fuel Tank Capacity (qt.)1.6
Oil Capacity (qt.)0.56–0.63 (18–20 oz.)
Lubrication SystemSplash
Ignition SystemElectronic
Governor SystemMechanical
CarburetorFloat
Throttle ControlManual friction, remote
Max. RPM3,100
Muffler IncludedYes
Flywheel BrakeYes
Auto Compression ReleaseYes
Bolt Circle (in.)8
Dimensions L x W x H (in.)15 3/8 x 13 3/4 x 10
EPA/CARB Approval (California Air Resource Board)Yes

Product Manual

Manual (pdf)

What's Included

  • (1) Engine

Manufacturer Warranty

24 months consumer / 90 day commercial

Additional Information

Engine Specs (pdf)
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Product Question + Answer

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Extended Warranty

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Manufacturer Warranty: 24 months consumer / 90 day commercial

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DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
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Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1 The price is $249.99.
Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1
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Item# 172791
Only $249.99
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Hide Similarities
Engine Displacement (cc) 190 190 190 190 190
Start Type Recoil Recoil Recoil Recoil Recoil
Application Walk mower Walk mower Toro lawn mower Walk mower Walk mower
Engine Type 675 Series 675 Series 675 Series Professional 875 Series OHV Professional 875 Series OHV
Rated Power (HP) Manufacturer no longer rates this engine by HP Manufacturer no longer rates this engine by HP Manufacturer no longer rates this engine by HP Manufacturer no longer rates this engine by HP Manufacturer no longer rates this engine by HP
Torque (ft./lbs.) 6.75 6.75 6.75 8.75 8.75
Shaft Output Vertical Vertical Vertical Vertical Vertical
Shaft Diameter (in.) 7/8 63/64 (25mm) 63/64 (25mm) 25 mm 7/8
Shaft Length (in.) 3 5/32 3 5/32 3 5/32 3 5/32 3 5/32
Shaft Keyway (in.) 3/16 3/16 and 2 woodruff key slots 3/16 (2) Woodruff keys and 3/16-in. straight keyway 3/16 and 2 woodruff key slots
Shaft End Tapped (Diameter (in.)/Threads per inch) 3/8–24 3/8–24 7/16–20 3/8–24 3/8–24
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise Counterclockwise Counterclockwise Counterclockwise
Bearing Type Plain Plain Plain Plain Plain
Cylinders (qty.) 1 1 1 1 1
Cylinder Bore Aluminum alloy Aluminum alloy Aluminum alloy Aluminum alloy Aluminum alloy
Bore x Stroke (in.) 2.69 x 2.04 2.69 x 2.04 2.69 x 2.04 2.69 x 2.04 2.69 x 2.04
Cooling System Air cooled Air cooled Air cooled Air cooled Air cooled
Air Cleaner Type Automotive type pleated paper Automotive type pleated paper Dual element Commercial-grade w/dual seal Commercial-grade w/dual seal
Fuel Tank Yes Yes Yes Yes Yes
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Tank Capacity (qt.) 1.6 1.6 1.6 1.6 1.6
Oil Capacity (qt.) 0.56–0.63 (18-20 oz.) 0.56–0.63 (18-20 oz.) 0.56–0.63 (18–20 oz.) 0.56–0.63 (18–20 oz.) 0.56–0.63 (18–20 oz.)
Lubrication System Splash Splash Splash Splash Splash
Low Oil Alert No No - - -
Ignition System Electronic Electronic Electronic Electronic Electronic
Governor System Mechanical Mechanical Mechanical Mechanical Mechanical
Carburetor Float Float Float Float Float
Throttle Control Manual friction, remote Manual friction Manual friction, remote Manual friction, remote Manual friction, remote
Max. RPM 3,100 3,100 3,100 3,100 3,100
Muffler Included Yes Yes Yes Yes Yes
Flywheel Brake - Yes - Yes Yes
Auto Compression Release Yes Yes Yes Yes Yes
Bolt Circle (in.) 8 8 8 8 8
Dimensions L x W x H (in.) 13 x 11 1/2 x 9 3/4 13 x 11 1/2 x 9 3/4 13 x 11 1/2 x 9 3/4 15 3/8 x 13 3/4 x 10 15 3/8 x 13 3/4 x 10
EPA/CARB Approval (California Air Resource Board) No Yes Yes Yes Yes

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