Zach Dinicola operates Mr. Mixer, a five-person KitchenAid mixer repair business, out of Augusta. Here he stands in the entrance to his repair shop. The mixers behind him are all used and repaired.

I have a KitchenAid Artisan stand mixer, purchased in December 2011 and which came with a five-year warranty. In January 2016 it was repaired under warranty when the speed control lever no longer ...