To troubleshoot a KitchenAid mixer, check the cord and plug for damage, test the outlet and circuit breaker, and restart the mixer to reset the functions and potentially solve the issue. Disassemble the mixer to check the gears, and remove any build up of grease restricting the motor parts.
Plastic gears should be inspected for damage, and grease may need to be removed if the KitchenAid mixer is not operating properly. Adding a small amount of fine motor oil to lubricate the parts may help with the efficiency of the appliance. Check the switches and levers for caked-on food that could cause clogs or blockage that can affect the operations of the appliance.
The construction of the KitchenAid mixer may be causing problems. When troubleshooting, inspect the screws within the machine, and if necessary, adjust the screws to keep the beater from hitting or scraping the bowl. The screws associated with the whisk attachment may also need to be tightened.
If the parts of the motor are not operating or appear to be damaged, it may be necessary to call KitchenAid to inquire about warranties and service options. KitchenAid may arrange for the appliance to be sent to the manufacturer for servicing. Many local technicians can also repair or replace motors when they malfunction or are damaged.