Question about Bissell 7901-1 ProHeat Scotchgard Upright Wet/Dry Vacuum
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Posted on Jan 02, 2017
Take of the housing ,turn it over and you will see the under side of the auto mix dial , Then turn the auto mix dial to rinse only;
On the top of the piston you will see a small slot , this fits into
the out side spiral on the auto mix knob with the dial set to rinse only the top part of the spiail sould point to the courner
Tilt the piston slightly,then hook it on the point of the auto mix knob , when you turn the auto mix dial to heavy traffic the piston should slide down the outer spiral of the auto mix-dial ,
Put the housing back on with the auto mix dial set to heavy traffic, but make sure no tubes are trapped or this will stop the flow of water,
i hope you can under stand what i have wrote ,Goodluck
Posted on Nov 29, 2007
The 7920 is a 220 volt version of the 7901. I found a shop in New Zealand of all places that has service manuals on line. They are sort of picture books, but using them has saved me a lot of money as it makes repairing much easier. Here's the link you'll need. Good luck. If you need any more help, just add a comment to your post and it will go to my e-mail and let me know. The heads you clean are just the outlet spray heads when they get gunky.
Looks like you already have the USELESS Bissell advice list!
Posted on Jun 03, 2009
Thanks to many others who have posted on similar problems -- water
and/or solution sprays through the handheld tools, but not through the
As others have suggested, I removed the water reservoir, which exposes the 2 main water sprays mounted above the rollers. Using, pliers, I carefully slid the clips back. Gently but firmly removed the two red nozzles.
Elsewhere I have read suggestions to just do one nozzle at a time. However, I found out that if you remove both red nozzles, you can then blow through one side and it will come out the other. In my case, that dislodged a nice collection of crystal-like chunks (guessing it may be crystallized residue from the cleaning solution).
There was also a bit of blockage in one of the red nozzles, which I cleaned out. Make sure you can blow through both of them with little resistance.
Reassemble: Push red nozzles back into hoses. Using pliers, reposition sprung clip back over the red nozzle. Snap nozzles back into place. Refill tanks and power it up.
In my case, that resolved the problem of no sprays from the main machine. Sprays like new now. Hope yours does too!!
Posted on Sep 26, 2009
I have pasted a link to the Bissell ProHeat series carpet extractor repair guide below. This guide is like my Bible when I'm working on these machines, and is EXTREMELY helpful on explaining how, and where hoses and parts go, and possible explanations of problems, and how to fix them.
I hope that this information is helpful to you, it sure is to me. If you did find this helpful, please be so kind and vote my repair helpful by clicking the 4 thumbs up icons in the top right hand corner of the repair. This is what really keeps repair professionals like myself keep coming back and giving free repair advice, we greatly appreciate when people acknowledge our work here. Thank you ahead of time.
Bissell ProHeat Repair Manual
Thank you again,
Posted on Apr 15, 2010
Here is a tip that will give you all the information you need to fix your BissellProheat Vacuum Problem.
Bissell Proheat Upright Wet/Dry Vacuum Problems
Posted on Sep 30, 2010
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