37.0 Gross HP* EFI/ETC
You demanded more power, whether powering commercial zero-turn mowers, concrete trowels, mud boats or more. Vanguard BIG BLOCK™ V-Twin engines continue to prove themselves in an array of demanding applications. The 37.0 Gross HP* / 993cc EFI/ETC features electronic fuel injection and electronic throttle control to deliver consistent power and fuel efficiency. The optional Oil Guard™ System allows you to go 500 hours between oil changes, saving time and money.
The original BIG BLOCK™ is reborn with upgrades designed to boost cooling by up to 60 degrees*, durability and reliability. Key upgrades include:
- New cylinder heads
- More cooling fins with 1/2 lb. more aluminum
- 6X stronger valve seat retention force
- New chopper fan and cooling fan
- Upgraded starter motor
- Redesigned wire harness
*Compared to previous design
Horsepower (HP)
37
Displacement (cc)
993
No. of Cylinders
2
Fuel Type
Gas
Features
Advanced Debris Management
Delivers low noise and good tonal quality.
High Efficiency Head Design
Stay productive even in the toughest conditions with new, improved cylinder heads designed to keep your engine cooler for longer. With a 30-degree temperature reduction†, our High-Efficiency Head Design enhances cooling performance, helping extend engine life and maintain peak productivity. Additional cooling features, including extra fins and increased aluminum, further boost durability and reliability when you need it most.
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>>>
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Vanguard Oil Guard™ System (Optional)
Unprecedented 500-Hour oil change intervals. This exclusive technology prolongs oil life while providing superior engine protection.
Specifications
| 37.0 Gross HP* EFI/ETC | |
| Model Number | 61A7 |
| HP (Gross)* | 37.0 |
| Engine Displacement (cc) | 993 |
| Engine Configuration | Vertical |
| Bore (in) | 3.37 |
| Stroke (in) | 3.41 |
| Oil Capacity (oz) | 82.0 |
| Compression Ratio | 8.2:1 |
| Air Cleaner | Five-Inch Cyclonic Air Filter |
| Ignition System | Magnetron® Electronic Ignition |
| Lubrication System | Full Pressure Lubrication System with Oil Cleaner |
| Length (in) | 23.66 |
| Width (in) | 20.24 |
| Height (in) | 24.65 |
| Weight (lbs) | 125.0 |
| Certified Power Rating | Download Power Curve |
| Commercial Engine Warranty** | 3-Year Limited |
| Operator's Manuals |
*All power levels are stated horsepower per SAE J1940 as rated by Briggs & Stratton.
**See operator's manual or dealer for complete warranty details.
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.
Product Literature
Get more detailed information on what you can expect from Vanguard
Learn more about Vanguard® EFI & ETC Technology and how it works by downloading our literature here.
Learn more about the Vanguard® Oil Guard System and how it works by downloading our literature here.