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Briggs & Stratton Engine 44T977-0028-G1 25 hp Commercial Turf 1"

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25 hp Briggs & Stratton Commercial Series Engine, 44T977-0028-G1, 724cc, Crankshaft: 1 in. Dia x 3-5/32 in. Long, 1/4 in. keyway, tapped 7/16-20 in., Free Shipping, No Tax.

Replaces 44Q977-0110-G5, 44Q977-0037, 44T877-0001-G1

Replacement Shortblock: 797093SB Model 44Q7

This genuine 724cc Briggs & Stratton twin cylinder engine offers dependable power for your equipment needs. With a power rating of 24 horsepower, this engine features a premium cyclonic air filtration system, electric starter, and maintenance-free Magnetron electronic ignition. With a manufacturer limited warranty of 3 years consumer use / 3 years commercial use, Briggs & Stratton provides power that you can trust. This engine includes a Dura-Bore cast iron cylinder sleeve for extended life. This engine includes a fuel pump. This engine includes an oil filter. This engine includes a 16 amp charging system.

  • Dura-Bore cast iron cylinder sleeve for extended life
  • Overhead valve design (OHV) for cooler operation and long valve life
  • Full pressure lubrication with oil filter
  • DU PTO bearing
  • 16 amp charging system
  • Cyclonic air filter, 5-step debris management system
  • Fuel Pump


Air Cleaner Type Cyclonic
Application Riding Lawn Mower
Auto Compression Release Yes
Auxilary PTO No
Bearing Type (PTO Side) DU
Bolt Circle (in.) 10
Part Dimensions Length (in) 18.5
Part Dimensions Width (in) 14.5
Part Dimensions Height (in) 18
Start Type Electric
Throttle Control Remote
Single UPC  
Country of Origin US
Max. RPM 3300
Oil Capacity (oz.) 64
Muffler Included No
Oil Cooler No
Oil Filter Yes
Ship Weight (lbs.) 90
Governor System Mechanical
Ignition System Electronic
Limited Warranty 3 Years Consumer, 3 Years Commercial
Low Oil Alert No
Lubrication System Pressure 
Low Oil Shutdown No
Flywheel Brake No
Flywheel Type Heavy
Fuel Filter Yes
Fuel Pump Yes
Fuel Tank Included No
Fuel Type Gasoline
Crankshaft Rotation (From PTO Shaft Side) Counter Clockwise
Cylinder Bore Type Cast Iron Sleeve
Cylinders (qty.) 2
Engine Displacement 724cc
Engine Series Commercial Turf
EPA/CARB Approval (California Air Resource Board) Yes
Cooling System Air
Crankshaft Straight
Crankshaft Diameter (in.) 1
Crankshaft End Tapped Size 7/16-20
Crankshaft Length (in.) 3-5/32
Crankshaft Output Vertical
Bore x Stroke (in.) 3.12 x 2.89
Carbureted Yes
Carburetor Float
Charging System 16 Amp Regulated
Choke Control Remote Choke
Color Black


  • Model: 44T977-0028-G1
  • Shipping Weight: 84lbs
  • Manufactured by: Briggs-Stratton

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