Briggs & Stratton 446777 Technical Specs

by James Nalley
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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.

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