Question about Bissell 3920 Bagless Upright Vacuum
The adjustment knob and the wheel plate are not even touching. Tried looking for "spring" as mentioned in previous blogs, but no spring is there. Does anyone have a schematic of this vacuum?
SOURCE: Carpet Height Adjusment
In addition to the tab that contacts the bottom of the slider, there are 2 protusions on the adjustable wheel plate that move through holes in the housing, but only when the handle is tilted to begin vacuuming. The wheel plate has a spring that forces the tab against the slider. As the handle is moved to the upright position, the protusions move back through the holes, taking the tab away from the slider and the wheel plate locks in its highest position. Therefore, the position of the slider has no effect while the handle is upright and locked. Hope this helps.
Posted on Nov 01, 2007
SOURCE: height adjustment not adjusting
The height adjustment wont engage unless the handle is in the down position. Not knowing this led me to overturn the hight adjustment knob.
Step on the handle release, pull the handle back and lay the vac on its side. Then you can get the knob and the plate back together again.
BTW, the reason I had this problem is because the front brush slows dramatically when using on carpet, I thought it was set too low, and turned the knob (in a manly fashion, putting it past its limit). Still working on that one. After inspecting the belt, looks like one worn and cracked spot gumming up the works.
Posted on Jul 11, 2009
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