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Briggs & Stratton Engine 44S977-0032-G1 25 HP 1" 724cc


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25 hp, 724cc, 44S977-0032-G1, Briggs & Stratton Engine Professional Series, 1" x 3 5/32", Free Shipping, No Tax

Replaces: 406777-0130-E1, 406777-0139-E1, 407777-0167-E1, 407777-0607-E2, 407777-2217-G1, 40G777-0122-G1, 40G777-0400-E1, 40H777-0119-G1, 40H777-0242-E1, 40U877-0012-G1, 441577-0113-E1, 441777-0027-E1, 441777-0283-E1, 441777-0785-E1, 445577-0122-E1, 445577-0435-E1, 445577-0499-E1, 445577-0755-B1, 445577-0755-E1, 445577-3035-G5, 445577-3037-G5, 445677-0413-E1, 445677-0827-E1, 445677-0954-G5, 445677-1188-B1, 445777-0027-E1, 445777-0168-E1, 445877-0130-E1, 446677-0463-E1, 446777-0115-E1, 446777-0165-E1, 446777-0362-E1, 44H777-0114-E1, 44K777-0117-E1, 44L777-0115-B1, 44L777-0134-G5, 44L777-0138-G1, 44L777-0144-G1, 44L777-3137-G5, 44M777-0121-E1, 44M777-0127-G1, 44N677-0042-G1, 44N877-0003-G1, 44P777-0119-B1, 44P777-0124-G1, 44P777-0138-G1, 44P777-0157-G1, 44P777-0167-B1, 44P777-0765-B1, 44P777-5157-G5, 44Q777-3137-G5, 44Q777-5146-G5, 44R877-0001-G1, 44R877-0014-G1, 44S777-0016-G1, 44S877-0002-G1, 44S877-0014-G1, 44S877-0032-G1, 44S877-0037-G1, 44s977-0041-g1 44U877-0006-G1 and many others.

Scag Model SFZ48-26BS D8500001 to D8599999, SFZ52-26BS D8700001 to D8799999, 483465, 44P777-0117-E1

Crankshaft: 1 in. Dia x 3-5/32 in. Long, 1/4 in. keyway, tapped 7/16-20 in.

  • Mechanical compression release for easy, reliable starting.
  • ReadyStart System automatically senses engine temperature for choking and is controled by sensitive bimetallic thermostat. To convert choke manual (remote) choke add, 1 x 691022 link rod, 1 x 691021 bracket, 2 x 695239 screws unless the engine you are replacing has these parts on it.
  • Includes Fuel Pump
  • Chrome plated exhaust valves reduce valve wear providing longer life.
  • Premium high capacity air, oil and fuel filters provide longer maintenance intervals and more engine protection.
  • Super-finished crank pin bearing for reduced friction and wear.
  • Advanced Debris Management System with a dual seal, cartridge-style air filter provides maximum protection and extends engine life.
  • 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.
  • Consumer warranty 2yrs
  • Commercial warranty 1yrs
  • HP (gross) 25.0
  • Engine Displacement (cc) 724
  • Number of Cylinders V-Twin
  • Engine Configuration Vertical Shaft
  • Engine Technology OHV
  • Length (in) 19.1
  • Width (in) 18.2
  • Height (in) 14.3
  • Weight (lbs) 84
  • Bore (in) 3.12
  • Stroke (in) 2.89
  • Lubrication System Full Pressure Lubrication
  • Oil Capacity (oz) 64
  • Oil Filter Premium
  • Electric Start
  • Air Filter Dual Element Cartridge with Advanced Debris Management

Service Notes - These modifications below may need to be made to match your engine. 

  • Transfer Remote Choke Control Assembly from original engine to replacement engine. (or leave as is, for use as auto choke system)
  • This engine is equipped with a Six Pin Wiring Harness.
  • Original engine was equipped special Remote Throttle Control or Governor Control. Transfer these parts to replacement engine.
  • Transfer Oil Sensor to the replacement engine.


Engine Specifications

Model Series 44S8
Power Lbs/Ft of Torque 24
Displacement (cc) 724
Oil Capacity (oz) 64
Valve Configuration OHV
Flywheel Torque (lbs/ft) 125
Governor Arm Torque (lbs/in) 70
Plug Gap (in) 0.03
Intake Valve (in) .004-.006
Exhaust Valve (in) .004-.006
Air Gap (in) .008-.012
Flywheel Puller Part 19203


Common Parts

593240 Filter-A/C Cartridge
695666 Filter-Fuel
696854 Filter-Oil (Black)
693997 Gasket-Cylinder Head
797890 Kit-Carburetor Overhaul
590476 Motor-Starter
491055S Plug-Spark
19203 Puller-Flywheel
  • Model: 44S977-0032-G1
  • UPC: 047282113608
  • Shipping Weight: 84lbs
  • Manufactured by: Briggs-Stratton


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