How do i put the washing machine belt back on?

I am not a repair professional. I am just a 78 year old man who has been making his own repairs for about 50 years. Therefore the washer ID doesn't mean
anything to me. It's hard to understand why the belt came off. Usually when the belt gets loose and starts slipping, the washer won't spin, and that's the problem. Since you know the belt came off, I'll presume you have the back off, if not then you'll have to remove the back. First thing is to pull the electrical plug. Then disconnect the water hoses after turning off the water supply valves. When you disconnect the hoses, they will be full of water, so have a small bucket handy to catch the water. Now take the back off and get down where you can see how the motor is mounted. It is a common thing for the belt to stretch, so they built in provisions to tighten it. There is a locking nut or bolt which holds the belt adjustment. The motor is mounted so that it can be turned to tighten the belt. Put the belt back on the pulleys and turn the motor to tighten the belt. Since your belt came off, which is unusual, take a good look at it before you put it back on. If it is damaged or stretched so far that you can't tighten it, you'll need to replace it. Use a bar, or a long screwdriver or a large crescent wrench to hold the belt tight while you secure the tension lock. I usually need help when I do this. You would be surprised to see all the information available if you google clothes washer repair, I hope this helps you. If it does (or if it doesn't) please rate my help on fixya.

How do i put the belt back on my washing mashine it is a Aquarius wf640p xx thankyou