Hoover 600M washing machine cycle issue

Sounds like you may have a timer problem. You might be able to pick one up at a appliance parts center. Most of the time, they can be pretty pricey item, if you can even get one for older models. Check EBAY as well, sometimes you can find hard to find parts for pretty cheap. Replacing the timer shouldnt be that hard. UNPLUG the unit, remove the console, which should be held on by screws, the remove and replace one wire at a time back to the timer. Use caution when removing the timer knob, you dont want to crack it. Most knobs remove by unscrewing to the left.