Re: Kohler Command 25 (CV730s) Ball bearing in Carb?
Most Lawn Tractor owners know how to find and make repairs to their equipment. There are some that should not be allowed to use a screw driver or a wrench. So, lets get some facts straight right up front here.
You wrote that you removed the air cleaner assembly from the Kohler Command 25 HP engine and a ball bearing fell out. NOTE: Was the ball bearing on the "outside" of the filter element? Outside of the foam part covering the filter itself. If it was on the outer side of the filter, it (ball bearing) didn't come from the carburetor. If it was on the inner side, it must come from the carburetor. And from there it has very little room (throat size here would be less than three inches at best.) The only way a ball bearing or any....object(s), whether it be a nut, screw or any debris to get into the air cleaner has to come from any opening. And that object would never get past the air filter it is in standard working assembly. Anything on the inner side of the air cleaner would end up in the engine due to the engine performance.
Anything from the fuel pump assembly would not end up in the air cleaner...inside the carburetor fuel bowl...NO. No ball bearing would get past the small orifices in the carburetor system. So discount that as a source for a ball bearing.
Have you had this tractor serviced by another person?
I relate a story that happen in 1967. I bought a new Pontiac LaMans. Every time I would make a left turn, a banging sound would happen at the rear right side of the car. It was annoying to say the least. One day...couple months later I decide to find the source of the banging sound. After removing the panel inside the trunk, there was the culprit. Some factory worker decided to play a prank. He tied a one inch bolt nut to a string that when the car would turn to the left, the nut would slam up against the inside fender.