When mixing egg whites kitchenaid k45 works great but try to cream butter and beater quits turning
I can't find any gear with broken or missing teeth. The grease is clean and shows no metal filings.
Food Mixers - KitchenAid - K45SS Classic Stand Mixer
Answers & Comments
It will be a broken or missing pin through a gear or the planetary or something wrong with the fuse gear. It should be easy enough to find but you will need to split the gearbox cases to check.