This is the service bulletin furnished by the A. C. Gilbert Co. to authorized service stations to aid them in the service and repair of American Flyer equipment. Specifically, this bulletin is for the American Flyer Locomotive 325 Hudson.
The American Flyer Locomotive 325 Hudson was made in 1951 and 1952. There were a few variations mainly around the coupler type as Gilbert was transitioning from the screwed on coupler to the krimped on coupler. There were three models that shared the same service manual.