
500cc 1-Inch Shaft Recoil Start Gasoline Engine
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500cc 4-Stroke OHV Engine
Our largest and most powerful single cylinder engine, perfect for projects that demand serious power.


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XP20HP Specifications
Specifications | |
Manufacturer | DuroMax Power Equipment |
Part # | XP20HP |
Engine Type | 4-Stroke |
Valve Type | OHV |
Engine Cooling Type | Forced Air |
Displacement | 500 cc |
Bore | 94 mm |
Stroke | 72 mm |
Max Output | 4000 rpm |
Max Torque | 22.87 Ft/lbs (31 N·m) @ 2500 rpm |
Shaft Orientation | Horizontal |
Shaft Size | 1” diameter, 3.535” long, 1/4” keyway |
Shaft End | 3/8” size 24 UNF – 2B drilled and tapped |
Shaft Rotation | Counter-Clockwise |
Measurement from Center of Shaft to Base | 5.26” |
Fuel Tank Capacity | 1.35 gallons |
Fuel Types | Gasoline |
Fuel Delivery System | Carburetor |
Average runtime on gasoline | 2 hours |
Starting type | Recoil Start |
Recoil Start | Yes |
Cast Iron Sleeve | Yes |
Bearing Type | Stainless Steel Ball Bearing |
Oil Cooling Type | Splash |
Oil Capacity | 40.5 fluid oz. |
Recommended Oil | 10W-30 |
Recommended Oil Types | Blended, Conventional, or Synthetic |
Product Dimensions | 19” L x 17” W x 19” H |
Weight | 77 lbs |
UPC | 811640016869 |
EPA Certified | Yes |
CARB Certified | Yes |
50 State Emissions | Yes |
Warranty | 3 Year |
What's in the Box? | DuroMax XP20HP Engine, Spark Plug Wrench, Oil Funnel, and Owner’s Manual |
Mounting Diagrams
Measured in millimeters (mm)

Bottom

Shaft

Side
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