Engine Brand Name / Model No. EH50PLE08 Engine Type 4-Stroke Cylinder Arrangement Single cylinder Carburetion System Carburetion, Mikuni CV BST34 x 1 Pilot Air Screw 2 5/8 turns out Needle & Seat 1.5 Pilot Jet 40 Main Jet 165 Engine Cooling Liquid cooling Engine Fuel Unleaded gasoline of at least PON 87/89 rating (oxygenated/non-oxygenated), containing MTBE (Methyl Tertiary Butyl Ether), < 10% ethanol, or < 5% methanol. Fuel Capacity 14.2 L/3.75 US gal Bore x Stroke Ratio 92×75 mm (3.62 x 2.95 in) Compression Ratio 10.0:2 Starting System Electric start w/ recoil backup Displacement 498 cm³ / 30.45 in³ Top Speed 55-60 mph (88.5-96.6 km/h) – owner’s claim Air Filtration High-quality foam element Lubrication Dry sump Engine Oil & Quantity 1.89 L (2 US quarts) of SAE 0W-40 Polaris Synthetic Engine LubricantMain gearcase: 80-90 GL5 Engine Counter Balancer, 10 fl oz (300 mL) for the rear & 5 fl oz (150 mL) for the front