Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Have you guys or gals have had any problems with the kohler courage xt-7 engines. I recently took my into a repair shop and they diagnosed that it would not start was because of the auto choke, they ordered a part kit for it they had installed it then got a phone call saying what they had diagnosed was wrong and that the sparkplug was threaded wrong out by 1/2 inch. How do I know if they had done this? If they diagnosed the engine would they look at the whole engine for just a specific area. Can you guys please give me some good answers please.