I have an older Maytag model #WU482. For some

I have an older Maytag model #WU482. For some reason it will not drain and will only run using the economy mode. I can hear the timer ticking at all other cycles and it does click between cycles. I recently replaced the drain float and the machine had been working fine after. The motor is working and the belt is good. I think the kids were playing with the timer knob. Could this cause a problem with the timer motor? Or does this sound more like a pump out issue, impeller? I'm thinking its the timer motor since only one mode is working, dry cycle also works.