New Briggs and Stratton replacement engines and shortblocks
(Appearance of covers etc may differ from illustration)
New Replacement Engine Crankshaft quoted lengths :-
The lengths quoted for engine crankshafts are taken from the engines mounting face where it is bolted to the equipment, not the length emerging from the engine.
The complete engine and 496606 short block for side valve engines who's model numbers begin with 28 are no longer available. The replacement engine would be the Intek 13HP OHV (see above for details). This engine is slightly different in its overall dimensions and the exhaust in on the opposite side so you would have to check its suitability to the application.
The alternative if feasible would be to repair your original with new parts. Once stripped down and the parts requirement is known, you can have the parts priced using the illustration and enquiry steps on the page below.