Lehr’s 5-hp ‘eco-friendly’ outboard is a winner with testers.
Capt. Bernardo Herzer has been converting small engines from conventional fuels to propane since he was a teenager. In 2012, he introduced his first propane outboards, 2.5 horsepower, 5-horsepower, and 9.9-horsepower models. Practical Sailor recently tested the 5-hp Lehr LP 5.0, a water-cooled four-stroke with an electric ignition—no priming or choke required. It operates at 4,000 to 4,500 rpm at wide open throttle, and the 49.6-pound, short-shaft model pushed our 120-pound test boat at 11-12 knots. The engine can be fueled using a 16.4-ounce propane twist-on bottle like those used with camping stoves or a 5-gallon, 20-pound remote propane tank.