Need clean cloths, whirpool washer

hELLO THERE I HAVE A WHIRPOOL WASHER THAT THE WATER WILL FILL, AND TRY TO GO TO THE NEXT CYCLE AND THE MACHINE JUST MAKE A BUZZING SOUND. I TRYED TO GOTO THE SPIN CYCLE MANUALLY,AND IT JUST MAKE A BUZZING RINGING SOUND ALSO. I TOOK THE WASHER APART ACCCORING TO THE TROUBLE SHOOTING REPAIR QUIDE, AND TESYED THE MOTOR SWITCH AND MOTOR AND EVERYTHING COMES OUT FINE, THE ONLY THING I WAS NOT ABLE TO TEST WAS THE COPASITOR. I WOULD LIKE TO KNOW WHERE TO TRY NEXT THE TIMER? THE CAPACITOR? PLEASE HELP OUR FAMILY REPAIR OUR WASHER MANY THANKS JEFF AND CATHY

Did you check the motor coupler?

Motor Coupler Repair Guide