Briggs & Stratton 446777 Technical Specs

by James Nalley

The 446777, also known as the 446777 Extended Life Series is a professional-series V-twin engine manufactured by the Briggs & Stratton Company. Available in three models -- 0025, 0126 and 0127 -- the best-in-class vertical-shaft engine is used primarily in Craftsman riding mowers and offers an overhead-valve design with features that provide optimum power but minimizes wear for longer life on commercial-use vehicles.


The 446777 ELS engine is constructed with a Dura-Bore cast-iron cylinder sleeve and a float-feed-type carburetor with an integral fuel pump for the addition of remote mount fuel tanks. It includes a premium air cleaner that provides up to three times more cleaning capacity as well as platinum spark plugs and OHV-design for extended component life.


The 446777 V-twin engine includes a displacement of 44.20 cubic inches with a 3.12-inch bore and a 2.89-inch stroke. It produces 26 horsepower with a maximum of 3,600 rpm and approximately 33 foot-pounds of torque at 2,600 rpm. It also offers a full-pressure lubrication system, a Magnetron 12-volt electric-starter system with a 16 amp alternator and an oil capacity of up to 64 fluid-ounces with a premium oil filter.


The 446777 ELS engine offers a weight of 80 pounds with a shipping weight of 96 pounds. Its dimensions include a length of 19.1 inches, a width of 18.2 inches and a height of 14.3 inches. The crankshaft length and width varies by model and includes a length of 4 5/16 inches with a width of 1 inch for the 0025 model, a length of 4 5/16 inches and a width of 1 1/8 inch for the 0026 model. The 0027 model includes a width of 1 inch with a length of 3 5/32 inches.

About the Author

James Nalley is a full-time travel journalist whose work has been published in more than 100 magazines, journals and websites. He is also the Topic Editor and Feature Writer for the Latin America and Caribbean Travel section of a prominent website in Canada. Nalley holds a Doctor of Philosophy in music and literature from the University of Rochester.

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