Admiral dryer model #LNC7757A71 will not start but the timer still runs and I don't know what to do. Any help?

it would seem to me that the main motor is out. the timer motor is a motor just for the timer. you need someone to try to check that large motor. you don't say how old it is. that being said they recommend that if any unit is over 7 years old it doesn't pay to have it fixed and you need to get another somewhere. sorry