the most common problem is the recovery tank. Most often the square piece of plastic that attaches to the side of the recovery tank is not snapped in-- it comes loose when you dump the tank. Take off the lid, pull the clear plastic sqare (about 4 inches by 5 ) that is attached on the OUTSIDE of the recovery tank and snap it back into place.
2nd make sure the rubber rim is clean and free of debris
3rd attach the lid with the hinges on the back first then snap down the lid
4th make sure the yellow float is down on the bottom (this is inside the filter inside the recovery tank)
5th put the recovery tank in the machine FRONT FIRST (where the two round peices of plastic are)then back, snap the sides back to lock the tank in place.
If these things dont work....make sure your not clogged with debris on the top (but I am sure you would have seen this before doing all the rest!)
I too am having difficulty. Everything seems fine electrically. I only get about 350 mv AC Power with the switch off and 1.7V AC with the swiitch on. I would think the power brush head would require DC voltage of some sort.. Like 12V???
There are really two reasons why the self-propelled wouldn't work. It could either be the belts on the vacuum cleaner are stretched or broken. The belts on this model control both the self-propelled transmission, as well as the brush roller. Here's a video that shows you how to inspect the roller brush and belts to make sure that they are installed properly and working. Try this repair first, as this is the easier one to fix.
The other problem if the belts are installed properly that would cause the self-propelled wouldn't work would be the self-propelled actuator arm. There is a cable that starts at the handle of the vacuum, and runs all the way down to the floor head of the vacuum that controls the transmission. As you pull backwards on the handle of the vacuum, the cable pulls this actuator arm backwards, which then turns the wheels backwards, and when you push forward it turns the wheels forward.
The problem with the way it's designed however, is that if you pick up the vacuum cleaner by the handle of the machine rather then using the carrying handle on the back of the vacuum, it causes too much tension on the actuator arm, and will cause the cable to rip right out of the arm.
This is a VERY common problem on this model. To check and see if this part is broken on your vacuum, step on the handle release pedal so that the handle is in the vacuuming position, push the pedal a second time so the machine lays flat on the floor.
Now if you look right behind the height adjustment switch, and the rug / floor switch where the floor part meets the upright part, you should see a cable that connects into the actuator arm. Pull up and down on the handle and look for movement. Is the cable loose with only a nut attached to it, or is it resting in the actuator arm?
If this didn't help you, and the problem is still happening, please just use the add a comment form here on Fixya and let me know that you're still having problems. I'd be honored to go through and do some more advanced diagnosing with you.
I hope this we helpful to you. If you did find this helpful, please be so kind and leave feedback for me. This is why repair professionals like myself continue to come back and give free repair advice, to get the recognition of a job well done.
if you unplug it from the wall does the dripping continue? if so the inlet valve is jammed slightly open and will need to be replaced (on the odd occasion i have had success by giving it a sharp tap) in the meantime turn the taps off when your not using the washer