I have a 97 wheelhorse with koler 12.5 commander I just bought it sounded like a timing or valve train problem pecking a little and not running smoothly and would not idle
I still not sure what's wrong but it has something to do with the governor I just happened to be checking carb and I grabbed the governor and reved the motor heard a metal clank and it smooth out completely and idles fine and Everytime I start it now I just reach down rev motor and it runs fine till I shut it off