Can anybody give advice on the recommended or correct break in procedure to follow after rebuilding a Kohler engine. I posted this a while back in the small engine section but didn't get any specific answers, just to hold up on heavy work for a while, which I have done. I've used my tractor since rebuilding the engine solely as a cart puller. I'd estimate that I have between 1 and 1.5 hours run time on the engine. I changed the oil once so far, after the first half hour of run time, it was still fairly clean but I figured it couldn't hurt. Is this engine "broken in" at this point? I think I know the answer to this one, but it ready to cut the grass with? What do I think, well I think it should be more than ready to use, but what do I know.