Two of the original spec numbers were 67512 and 67545, which are replaced by 75528. This engine has a 1-1/8" x 3-5/32" shaft. You may be able to use one of the engine listed here with a longer shaft on it. The shaft length is longer but can be cut down. The shaft is not hardened steel and is drilled and tapped 2" deep. There may be minor differences like wiring, air breather, throttle and choke controls, but parts should be interchangeable as needed.
