Later on, there were versions which had either a left-hand side fuel tank (when viewed from the cylinder head), or an independently-mounted (auxiliary) tank.Īlso, would you guys have any working examples of these Lauson-Tecumseh engines?
* Like the smaller-frame engines, these three medium-frame engines utilized self-contained fuel tanks which were integral with the blower housing. However, another LAV35 version was available (for rotary tillers and industrial applications) which had a separate, rear-mounted (if viewed from the cylinder head) polyethylene fuel tank. * LAV25,30,35 engines for rotary lawn mowers, in their early days, had self-contained fuel tanks which were part of the main engine blower housing (shroud). LAV25 and LAV30 = 2.5 and 3 hp respectively, 7.74 cu. Tecumseh 4-cycle vertical-shaft engines, from circa 1969, that showed obvious Lauson ancestry: number, and a revision letter (it used to be four digits, plus revision letter). was largely unchanged, after 1962/63 they took on a five-digit spec. This includes information about the way they were designed and, their model/specification numbers. If the engine is to be installed on a new application, self-tapping mounting bolts are generally needed as engine mounting holes are blank. The engines listed in our catalogs are meant to fit a wide variety of equipment and may NOT necessarily be the exact engine you currently have on your equipment.įor additional information regarding mounting bolts and torque values, please review our Engine Mounting Hardware PDF.Does anyone know the exact history of the Tecumseh vertical-shaft engines, those that were considered the most common examples, from the early years following its Lauson acquisition (1956-1962)? If replacing an engine on an existing application, reusing the current mounting hardware is recommended. PLEASE NOTE: Engine mounting hardware is NOT included with new replacement engines. Our engine replacement catalog shows all of the service replacement engines and provides the measurements of the engines, specification information, mounting pattern and other valuable dimensions, numbers, etc. Information regarding your direct engine replacement is available in our Replacement Engine Catalog (MS-5568). To ensure you’re replacing your engine correctly, read our guide below.
There are many variables that come into play when replacing an existing engine with a new one (shaft extension, mounting base, overall fit, etc.).
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