The first propane-powered outboard engines, LEHR motors present an environmentally-friendly and cost-effective alternative to gasoline. Overhead-valve four-stroke engines run on 110-octane propane, and are eco-friendly with zero evaporative emissions, because propane, unlike gasoline, is not listed as a marine pollutant by the DOT. Propane is 50-times cleaner than gas, with 96% less carcinogenic compounds, 60-70% less smog-producing hydrocarbons and no Class I or II ozone-depleting chemicals. It's also domestically produced, reducing our dependency on foreign oil. LEHR outboards are easy starting with no choke and no priming, reliable with no carburetor gum-up or winterizing, economical because propane costs roughly half as much as gas. 9.9hp. models connect to remote tanks, and are complete with a 10' hose assembly. A 2012 West Marine Green Product of the Year Award Winner. Engine Type: 4-stroke OHV Horsepower: 9.9 Engine Shaft Length: 15" Engine Weight: 88lb. Gears: Forward, Neutral, Reverse Fuel: Propane (LPG) Exhaust System: Above prop Ignition System: CDI Gear Ratio: 2.08:1 Warranty: Three years