The Vanguard® 27,6 Gross kW EFI/ETC horizontal shaft BIG BLOCK™ engine delivers peak performance for high-power applications in agriculture, construction, and industrial equipment. Producing 37 HP at 3600 RPM, this engine integrates advanced Electronic Fuel Injection (EFI) and Electronic Throttle Control (ETC) technologies, delivering real-time optimization of fuel delivery and throttle response. With reduced vibration, consistent RPM under heavy load, and extended runtimes, it’s the ideal choice for machines that demand powerful, fuel-efficient performance in challenging environments.
- Power for heavy-duty tasks: High-displacement V-Twin delivers robust torque and horsepower to support intensive commercial machinery.
- Smooth operator: Balanced internal components reduce vibration, enhancing operational stability and user comfort.
- Efficient power delivery: Closed-loop EFI and instant-response ETC provide consistent RPM, fuel savings, and improved throttle handling.
- Durable design: Built for rugged reliability, this engine maintains efficiency and performance under constant stress.
Features & Benefits
- Improved Sound Quality
Resin blower housing and phase-modulated flywheel fan deliver a quieter, more refined engine tone for better operator experience. - V-Twin OHV Technology
Overhead valve configuration increases power and efficiency, while the V-Twin layout ensures smooth and balanced operation. - Smooth Easy Starting
Mechanical compression release and Magnetron® ignition ensure quick starts. Solenoid shift and rewind start options are available. - Maximum Durability
Cast iron sleeve and reinforced block resist wear and provide reliable oil control, even under continuous high-load conditions. - Cyclonic Air Cleaner
Five-inch cyclonic system filters airborne debris to protect internal components, extending air cleaner service life. - Electronic Fuel Injection (EFI)
Closed-loop EFI system automatically adjusts fuel and spark for easier starting, optimized performance, and up to 25% fuel savings.* - Electronic Throttle Control (ETC)
ETC reacts to load changes in real time, maintaining RPM stability via flywheel speed sensors and electronic throttle adjustments. - Extended Engine Life
Dual ball bearings and full-pressure lubrication with a spin-on filter provide long-term protection for moving parts. - Superior Balance
Balanced crankshaft and lightweight piston assembly minimize vibration and enhance thermal durability. - High Efficiency Head Design
Angled ports improve combustion efficiency and fuel mixing for reduced emissions, better idle, and more consistent output.
Specifications
| Engine Type: | V-Twin, 4-stroke, air-cooled, OHV |
| Model Number: | 61A7 |
| Gross Power @ 3600 rpm: | 27.6 kW / 37.0 HP* |
| Displacement: | 993 cc |
| Cylinder: | Cast iron sleeve |
| Bore & Stroke: | 85.5 mm x 86.5 mm |
| Fuel Tank Capacity: | N/A |
| Oil Capacity: | 2.3 liters |
| Compression Ratio: | 8.2 : 1 |
| Air Cleaner: | Five-Inch Cyclonic Air Cleaner |
| Ignition System: | Computer Controlled Battery Ignition |
| Lubrication System: | Full Pressure with Spin-On Oil Filter |
| Dimensions (L x W x H): | 561 x 514 x 626 mm |
| Dry Weight: | 56.7 kg |
| Optional Features: | Low Profile Air Cleaner, Oil Pressure Switch, Flywheel Stub Shaft, High and Mid Mount Mufflers, Alternators (9–50 amp), Key Switch, Tach/Hour Meter with Check Engine Light, Spline Crankshaft |
*Power levels are stated gross kilowatts per SAE J1940 as rated by Briggs & Stratton. Fuel savings may vary based on application conditions.
