Larry M Elkhorn , WI February 24, 2017 Appliance: Kenmore Dryer 41780042990 Kenmore Dryer 41780042990: Kenmore dryer would buzz hum but not start. How to replace Motor. I replaced the motor, the original motor was shot. I cleaned and oiled the motor but it was a temporary fix because the bushings were worn to much. When the motor was running there was a lot of vibration noise and to start the old motor it would buzz and hum to start up. Now with the new motor in place it starts and runs as it should, huge difference. In the future I should clean around the motor area more often, it accumulates a lot of lint inside that confined space. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes