Filter Queen vacuum.. It doesn't seem like the suction is very good on my vacuum. Have had for a while. Ideas how I can improve suction

First eliminate other possible causes: check for blockages and leaks in the tubes, and obstructions or tangles in the rotating brush. This sort of thing comes under the category of regular maintenance that you should be doing every now and then anyway. If none of those things is the cause, then you should replace the drive belt. Other possible solutions can be checked out on the following links
http://www.doityourself.com/stry/how-to-improve-day-to-day-vacuum-suction
http://www.thathomesite.com/forums/load/cleaning/msg0111072625584.html?15
Feel free to request additional assistance. Hope this solution has been helpful?

You might not enjoy doing this but over a period of time moisture and dirt build up in the sucktion hose of your vacuum and forms hard dirt clods. You will n ieed to take the suction hose loose from the beater brush assemby and take a stick or wire coat hanger run it up in the suction hose. You will be able to feel the clods twist the coat hanger a loosen up the clods then shake the hose untill clods start falling out. This will solve your suction problem