I have a Maytag washing machine that I put new belts on, but it still won't agitate. The spin cycle works okay, and I think the timer is working correctly; but it will not agitate during the wash cycle.
It is a 22 year old Maytag a105 Series 10 machine
with the front of the machine off, put it into the wash cycle, gently pull back on the motor slightly. If it starts to agitate, then you have thick grease in the transmisiion. If it does not, then you have a bad transmission. Either way your looking at a pretty pricey repair. I should mention that if you are in a cold climate and your machine is not warm, it can act like that also because the grease gets very thick and will not agitate. If that is the case all you need is a little more heat in the area.