The 2-cylinder, 498cc SOHC 4-stroke outboard is Lehr’s most powerful model to date and the largest factory propane-powered outboard available. Advantages of propane fuel include easy electric or pull-starting (no choking or priming needed), maximum acceleration/performance with 110-octane fuel, and efficiency that delivers more miles between refuelings and releases no evaporative emissions or marine pollutants.
An innovative Liquid Draw fueling system is key to the 25’s performance. Specialized liquid draw tanks work in concert with a heated evaporation system that rapidly changes the state of the fuel from liquid to gas. This unique fuel-delivery system, which includes rugged stainless steel fuel lines, prevents the fuel from freezing and ensures a steady, precise supply of vaporized propane.
Other features include an optional internal, fully sealed lithium-ion battery available on Electric Start models. Lehr is the only outboard manufacturer to offer this breakthrough, providing fast, reliable starting while eliminating the need for heavy lead-acid batteries. In addition, having this lightweight (under 2 pounds) battery integrated into the engine simplifies rigging and saves valuable deck space. The battery is continuously recharged by the outboard’s 6-amp/80-watt alternator.
To accommodate a range of boat styles and applications, the 25 is available in 15” (S) and 20” (L) shaft lengths with various options for Manual/Electric Starting, Tiller/Remote control and Power Tilt/Trim. The engine is offered with optional 22-pound (5.3 gallon) or 31-pound (7.5 gallon) Liquid Draw Composite tanks designed for marine use. These lightweight tanks feature an opaque design that allows boaters to see at a glance the amount of fuel inside. Considering the fuel-efficient characteristics of the 25 (recent tests showed consumption rates of 1.1 gph at 3000 rpm and 2.5 gph at 5000 rpm) boaters will have plenty of time to explore, fish or cruise between fill-ups. Several other tank options are also available, including aluminum and steel tank options in a range of sizes to suit the needs of a variety of boats.
Another advantage of propane outboards is that they are easier and less expensive to maintain than traditional gas-powered outboards. Propane combusts completely and cleanly, reducing engine oil deposits and extending scheduled maintenance intervals. The lubricating properties of engine oil are further enhanced because propane, unlike gasoline, does not act as a solvent. With no gasoline to gum up the carburetor or fuel lines, there is no need to run the motor dry at the end of the day. Nor is there any need to winterize the outboard before long periods of storage. Additionally, propane fuel is produced in America, is widely available and weighs substantially less than gasoline.
All Lehr outboards are backed by the company’s 3-year warranty, which includes the optional internal lithium-ion battery.
The new Lehr 25 Propane Outboard is scheduled for public availability beginning May 2015 through West Marine retail centers and other Lehr outboard dealers across the U.S. and Canada.