The Briggs and Stratton 44P777 is a 724 cc (44.2 cu·in) V-twin air-cooled four-stroke internal combustion gasoline engine, manufactured by Briggs and Stratton.
The B&S 44P777 engine has an OHV (overhead valve) design and a vertical PTO shaft. This engine is equipped with float type carburetor and an electronic ignition system. The B&S 44P777 engine used Dual-Clean air cleaner (paper element with a foam pre-cleaner).
It has an 79.24 mm (3.12 in) cylinder bore and 73.41 mm (2.89 in) piston stroke. This engine produced 26.4 PS (19.4 kW; 26.0 HP) at 3,600 rpm of horsepower.
The breakdown of the engine code is as follows:
- 44 – Displacement
- P – Basic design series
- 7 – Vertical PTO-shaft
- 7 – Plain bearing, Pressure lubrication
- 7 – Electric starter
General information
| Engine Specifications | |
| Model | B&S 44P777 |
| Type | 4-stroke, OHV, V-twin |
| Displacement | 724 cm 3 (44.2 cu-in) |
| Max. horsepower | 26.4 PS (19.4 kW; 26.0 HP) at 3,600 rpm |
| Max. torque | – |
| Fuel system | Float typet carburetor |
| Cooling system | Forced-air |
| Ignition system | Electronic |
| Lubricating system | Full pressure lubrication system with spin-on oil filter |
| Starting system | Electric starter |
| Fuel used | Gasoline |
| Fuel tank capacity | – |
Cylinder Block and Head
| Cylinder block | ||
| Bore x Stroke | 79.24 mm X 73.41 mm (3.12 x 2.89 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Cylinder Head | ||
| Valve Arrangement: | OHV | |
| Valves: | 4 (2 per cylinder) | |
Service Information
| Engine | |
| Max speed | 3,600 rpm |
| Valve clearance | |
| Intake valve clearance | 0.10-0.15 mm (0.004-0.006 in) |
| Exhaust valve clearance | 0.10-0.15 mm (0.004-0.006 in) |
| Oil system | |
| Oil type | API SF, SG, SH, SJ or higher |
| Recommended oil |
Summer: SAE 30, 10W-30 Winter: SAE 5W-30 |
| Oil capacity (with filter) | 1.9 liters (2.01 US.qts, 1.67 Imp. qts) |
| Ignition system | |
| Spark plug | Champion RC12YC |
| Spark plug gap | 0.7-0.8 mm (0.0276-0.0315 in) |
Why doesn’t Briggs publish the all important MAX TORQUE?
Only Briggs knows that )
Thanks for details on B&S 44p777
Searched for 15 minutes looking for correct valve lash adjustment spec.
Thanks for publishing straight forward onfo
I see B&S says .004-.006 in. both valves. My mechanic says .004 intake & .009 exhaust since it expands from the heat more than the intake. Sounds logical.
Looking for 44p777 replacement engine. Point me in the right direction
What is the part number for the piston that fits the 44p777-0594-B1 briggs and stratton engine.