28 Gross HP* V/S Air Cooled V-Twin Big Block Vertical Shaft

Vanguard™ is the proven industry standard for BIG BLOCK™ engine power, performance and reliability. For the most challenging applications—where downtime is not an option—this BIG BLOCK has been expertly engineered to deliver the dependability people need to get a lot more done in less time throughout the workday.

Features	Benefits
Engine Warranty	New 3 year global commercial engine warranty
Oil Gard® Low Oil Shutdown System	Significantly reduces the chance of engine damage due to insufficient lubrication
V-Twin OHV Technology	Superior balance, low vibration, lower emissions, improved valve life, better fuel economy and higher HP/Weight
Pressure Regulated Full Flow Oil Filtration	Keeps oil clean longer, extends time between oil changes and extends bearing life
Advanced Debris Management System (ADMS) Featuring Easy Clean Access	Allows the engine to run cooler and cleaner which enhances durability and performance
Dura-Bore Cast Iron Cylinder Sleeve	Assures long engine life and oil control
Mechanical Compression Release	Smooth easy starting, longer starter life, instant return to maximum power
Lubrication
Oil Drain	Convenient drain locations for trouble-free maintenance
Full Pressure Lubrication w/ Spin-On Oil Filter	Cleans oil and protects engine components to ensure maximum lubrication and long life
Centrally Located Oil Pump and Pickup	Faster priming and allows for a higher angle of operation
Oil Dipstick	Provides easy access to check oil levels
Mechanical
Simulated Dynamic Crankshaft Balance Techniques	Improves engine vibration
Modern Light Weight Pistons w/ Optimized Compliant Ring Package	Lowers noise, oil consumption, emissions and reduces wear
High Efficiency Head Design	Angled ports optimizes tumble and mixture preparation for improved efficiency, smoother idle, lower emissions and more power
Five-Inch Centrifugal Multi-Stage Air Cleaner	Provides maximum engine protection, especially under dirty and dusty conditions
Industrial Grade Solenoid Shift Starter	Quick reliable starts
Mechanical Governor	Improved speed control and more available power
Magnetron® Electronic Ignition	Quick dependable starts with no maintenance required
Sound
Engineered Resin Blower Housing	Lowers noise level and improves sound quality
Phase Modulated Flywheel Fan	Lowers noise level and improves sound quality
Acoustically Contoured Crankcase	Lowers noise level and improves sound quality
Large Volume Lo-Tone Muffler with Specially Baffled Chambers	Lowers noise level and improves sound quality
Innovative Intake and Exhaust System	Lowers noise level and improves sound quality

Engine Dimensions
Length x Width x Height	23.66in (601mm) x 20.24in (514mm) x 24.65in (626mm)
Weight	125lbs (56.7kg)
Oil Capacity	77.8oz (2.3L)
Engine Displacement (cc)	896 cc (54.68 cu in)

Engine Specifications
Gross Horsepower*	28
Engine Displacement (cc)	896 cc (54.68 cu in)
Number of Cylinders	Two
Engine Configuration	Vertical
Bore	3.37in (86mm)
Stroke	3.07in (78mm)
Compression Ratio	8.2:1
Ignition System	Magnetron®
Carburetor	Two Barrel Float Feed
Engine Cooling	Air
Engine Fuel	Gasoline or Gaseous
Governor	Mechanical
PTO (Standard)	1" SAE Keyway
Cylinder Block	Aluminum Alloy with Dura-Bore Cast Iron Sleeve
Crankshaft	Ductile Iron
PTO Shaft Rotation	Counterclockwise from PTO Side
Starter	Solenoid Electric Start Standard
EPA Compliant Engine	Yes

CARB Compliant
Oil Pressure Switch
Oil Cooler
Alternator (20, 20-50)
Speed Sensor
Low Profile Air Cleaner
High, Low and Side Mount Mufflers
Straight Key Crankshaft (1.125 in)

*All power levels are stated horsepower per SAE J1940 as rated by Briggs & Stratton.