The Kenmore 90 Series dryer does not typically have a dedicated "safety restart button" like some other appliances. However, it does have safety features built into its design to prevent overheating and potential hazards. If the dryer stops working, there are steps you can take to troubleshoot and potentially restart it: 1. Check the Power Supply: Ensure that the dryer is properly plugged into the electrical outlet and that the circuit breaker is not tripped. If the outlet is functioning and the circuit breaker is on, move on to the next steps. 2. Door Switch: The dryer won't start if the door is not properly closed or if the door switch is malfunctioning. Make sure the dryer door is fully closed and latched. If the door switch is faulty, it might need to be replaced. 3. Check the Timer and Controls: Make sure the timer and controls are set correctly for the desired drying cycle. Some dryers won't start if the timer is not set or if the controls are not in the correct position. 4. Thermal Fuse: If the dryer overheats, the thermal fuse can blow and interrupt the power supply. The thermal fuse is a safety component that needs to be replaced if it's faulty. It's usually located on the blower housing or exhaust duct. Check the user manual for its location on your specific model. 5. Lint Filter and Exhaust Vent: Check that the lint filter is clean and properly inserted. Additionally, inspect the exhaust vent to ensure it's not blocked or restricted. Poor airflow can lead to overheating and cause the thermal fuse to blow. 6. Power Cycling: If you've checked all the above steps and the dryer still won't start, try unplugging it from the power source for a few minutes and then plugging it back in. This can help reset the electronics. 7. Professional Help: If none of the above steps resolve the issue, consider seeking the assistance of a professional appliance technician. They can diagnose the problem more accurately and safely address any electrical or mechanical issues. Remember that the Kenmore 90 Series dryer might have variations in design and features. If you're unable to resolve the issue using the steps mentioned above, consulting your dryer's user manual or reaching out to Kenmore customer support can provide more specific guidance based on your model.