Close

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

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

Item# 172791
Print Email Share on Facebook Tweet Pin It
Only $259.99

Add to Cart

Item in Cart

Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
View Shipping Options
Not Available in Stores

Manufacturer's Warranty: 24 months consumer / 90 day commercial

Customer Product Rating
 

Product Summary

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.

What's Included

  • (1) Engine, Model# 121S02-2025-F1

Features + Benefits

Top of page
Features for Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1
  • ReadyStart recoil ignition starts with no prime or choke
  • Certified to CARB Tier III
  • Meets EPA 2012 phase 3 standards

Key Specs

Top of page
Item#172791
Ship Weight29.0 lbs
Engine Displacement (cc)190
Start TypeRecoil
ApplicationWalk-behind 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

Additional Information

Engine Specs

Customer Reviews

Top of page

Product Question + Answer

Top of page

Extended Warranty

Top of page
Service Protection Plus

Manufacturer Warranty:
24 months consumer / 90 day commercial

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Replacement Plan
Only $24.99
More Info
Only $39.99
More Info
Replacement Plan with Accidental Damage
Only $34.99
More Info
Only $59.99
More Info
View + Compare All Plans

Compare with Most Popular 121cc - 240cc Briggs & Stratton Vertical Engines

Top of page
See All 121cc - 240cc Briggs & Stratton Vertical Engines
 
 
 
Currently Viewing
 
 
 
(40)
Item# 7065
In Stock Online
Only $169.99
(27)
Item# 70653
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Only $179.99
Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1 The price is $259.99.
Briggs & Stratton Pro-Series Push Mower Engine — 190cc, 25mm x 3 5/32in. Shaft, Model# 121S02-2025-F1
(Not Yet Rated - New)
Item# 172791
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Only $259.99
(1)
Item# 70507
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Only $259.99
(4)
Item# 750061
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Only $259.99
Hide Similarities
Engine Displacement (cc)
190 190 190 190 190
Start Type
Recoil Recoil Recoil Recoil Recoil
Application Walk-behind mower Walk-behind mower Walk-behind mower Walk-behind mower Walk-behind mower
Engine Type 675 Series 675 Series Professional 875 Series OHV 675 series 675 Series
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 8.75 6.75 6.75
Shaft Output
Vertical Vertical Vertical Vertical Vertical
Shaft Diameter (in.) 7/8 63/64 (25mm) 25 mm 7/8 7/8
Shaft Length (in.) 3 5/32 3 5/32 3 5/32 1 13/16 2 7/16
Shaft Keyway (in.)
3/16 3/16 and 2 woodruff key slots (2) Woodruff keys and 3/16-in. straight keyway 3/16 3/16
Shaft End Tapped (Diameter (in.)/Threads per inch) 3/8–24 3/8–24 3/8–24 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 2.01
Cooling System
Air cooled Air cooled Air cooled Air cooled Air cooled
Air Cleaner Type
Automotive type pleated paper Automotive type pleated paper Commercial-grade w/dual seal Automotive style paper filter Automotive style paper filter
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 Spash
Low Oil Alert
No No - 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 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 15 3/8 x 13 3/4 x 10 13 x 11 1/2 x 9 3/4 13 x 11 1/2 x 9 3/4
EPA/CARB Approval (California Air Resource Board)
No Yes Yes - Yes