21 Gross HP V-Twin H/S

This engine is design-engineered to dependably take on the most demanding commercial applications. Energetic and quick starting, this powerhouse features a number of advanced technologies and integrated components that are proven to elevate the reliability standard, which helps hardworking people get a lot more done in less time.

Typical applications for this high-performance Vanguard™ engine include: Golf and Turf Equipment, Utility Vehicles, Commercial Mowers and Power Packs.

BROCHURE
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FEATURES BENEFITS
Engine Warranty New 3 year global commercial engine warranty
Dura-Bore Cast Iron Cylinder Sleeve Assures long engine life and improved oil control
V-Twin OHV Technology Superior balance, low vibration, lower emissions, improved valve life, better fuel economy and higher HP/Weight
Cooler Cleaner Technology (efficient fan, improved debris management) Efficiently reduces engine and oil temperatures by 25-30 degrees while effectively managing airborne debris
Pressure Regulated Full Flow Oil Filtration Keeps oil clean longer, extends time between oil changes and extends bearing life
Dual Clean Air Cleaner Industrial Pleated paper with foam pre-cleaner for extended engine life
Mechanical Compression Release Smooth easy starting, longer starter life and provides an instant return to maximum power
Lubrication
Oil Drain Convenient drain locations for trouble-free maintenance
Oil Dipstick Provides easy access to check oil levels
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 Cooler Reduces oil temperature, improves lubrication, and extends oil change intervals
Mechanical
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
Mechanical Governor Improved speed control and more available power
Magnetron® Electronic Ignition Quick dependable starts with no maintenance required
Simulated Dynamic Crankshaft Balance Techniques Improves engine vibration
New Idle Down Automatically lowers RPM when power not required. Results in lower fuel consumption and lower noise.
Sound
Poly-Core 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
Lo-Tone Muffler Lowers noise level and improves sound quality
ENGINE SPECIFICATIONS
Gross Horsepower* 21
Engine Displacement (cc) 627 cc (38.26 cu in)
Number of Cylinders Two
Engine Configuration Horizontal
Bore 2.97in (75mm)
Stroke 2.76in (70mm)
Compression Ratio 8.4:1
Ignition System Magnetron®
Lubrication System Full Pressure w/ Spin On Oil Filter
Carburetor Two Barrel Float Feed
Engine Cooling Air
Engine Fuel Gasoline or Gaseous
Governor Mechanical
PTO (Standard) 1″ SAE Keyway (See Options Tab)
Cylinder Block Aluminum Alloy with Dura-Bore Cast Iron Sleeve
Crankshaft Ductile Iron
PTO Shaft Rotation Counterclockwise from PTO Side
Starter Rewind or Electric
EPA Compliant Engine Yes
Length x Width x Height 12.52in (318mm) x 16.02in (407mm) x 17.68in (449mm)
Weight 77lbs (34.9kg)
Oil Capacity 57.5oz (1.7L)
Engine Displacement (cc) 627 cc (38.26 cu in)
  • Alternator (16, 20, 20-25)
  • Solenoid Shift Starter
  • Heavy Duty Starter
  • Key Switch (H/S Only)
  • Tapered Crankshaft (H/S Only)
  • Threaded Crankshaft (H/S Only)
  • Straight Key Crankshaft (1 in, 1.125 in)
  • Oil Pressure Switch
  • Speed Sensor (H/S Only)
  • Cyclonic Air Cleaner
  • High, Low and Side Mount Mufflers
  • CARB Compliant Purge Ports
  • New Idle Down (H/S Only)

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