25.0 Gross HP* EFI/ETC
These Vanguard V-Twin engines deliver the performance and reliability required by the serious homeowner or light commercial user. The 25.0 Gross HP* / 724cc EFI/ETC model features electronic fuel injection and electronic throttle control for consistent power, quick load acceptance, and reduced fuel consumption. The optional patented Oil Xtend™ System allows you to go 250 hours between maintenance intervals.
Engineered for exceptional value and durability, key features include:
- Extended engine life with the patented 5-Step Cyclonic Debris Management System
- Ensure reliable, quick starts in heavy duty applications with a commercial-grade solenoid shift starter
- Minimize vibration and maximize durability via a strengthened cylinder block with a third dowel
- Protect internal components from impact with die-cast aluminum valve covers
- Defend against extreme conditions with premium Viton seals
Horsepower (HP)
25
Displacement (cc)
724
No. of Cylinders
2
Fuel Type
Gas
Features
Patented Oil Xtend™ System (optional)
Maximize uptime and stay productive longer with the exclusive 250-hour maintenance system. LEARN MORE >>>
Best-in-Class Debris Management
Patented 5-step cyclonic debris management system keeps harmful debris out of the engine, even under heavy-debris conditions.
Vanguard EFI/ETC
Achieve consistent power, optimize fuel efficiency, and improve starting performance with electronic fuel injection (EFI). With electronic throttle control (ETC), the engine instantly adjusts power to match any load, ensuring peak performance at all times. LEARN MORE>>>
Vanguard Service and Support
Dedicated support with a 3-Year warranty***, 12,000+ Briggs & Stratton trained dealers and 9,000 certified technicians to ensure rapid access to parts and service to maximize uptime.
Specifications
| 25.0 Gross HP* EFI/ETC | ||
| Model Number | 44Z8 | 44Z8 |
| HP (Gross)* | 25.0 | 25.0 |
| Engine Displacement (cc) | 724 | 724 |
| Engine Configuration | Vertical | Vertical |
| Bore (in) | 3.12 | 3.12 |
| Stroke (in) | 2.89 | 2.89 |
| Oil Capacity (oz) | 67 (75 with optional Oil Xtend) | 67 (75 with optional Oil Xtend) |
| Compression Ratio | 8.5:1 | 8.5:1 |
| Air Cleaner | Integral Cyclonic Air Filter | Integral Cyclonic Air Filter |
| Ignition System | Computer Controlled Electronic Ignition | Computer Controlled Electronic Ignition |
| Lubrication System | Full Pressure Lubrication with Oil Filter | Full Pressure Lubrication with Oil Filter |
| Length (in) | 19.3 | 19.3 |
| Width (in) | 17.6 | 17.6 |
| Height (in) | 15.7 | 15.7 |
| Weight (lbs) | 86.5 | 86.5 |
| Certified Power Rating | Download Power Curve | Download Power Curve |
| Commercial Engine Warranty** | 3-Year Limited | 3-Year Limited |
| Operator's Manuals | No documents found. | No documents found. |
*All power levels are stated gross HP at 3,600 RPM per SAE J1940.
**See operator's manual or dealer for complete warranty details.
***Three-year commercial limited warranty applies to engines manufactured after June 30, 2017.
Support
Manuals
Download the operator's manual or illustrated parts list for your Vanguard™ engine by searching your engine model number.
Tips & Troubleshooting
Have a question? Search our Frequently Asked Questions to find answers related to model specifications, routine maintenance, repair or troubleshooting.
Dealer Locator
World class parts delivery, industry-leading global warranties and unparalleled service & training keeps your equipment out of the shop and on the jobsite.
Commercial Limited Warranty
Three-year commercial engine warranty for all applications. See operator's manual or dealer for complete warranty details.
