Maytag diswasher upper spray bar cleaning?

SOURCE: How to remove upper spray arm of Maytag DWU 9200 BBE dishwasher

There is a plastic clip that holds the spray arm to the inlet line. This clip is in the center and has to be sqeazed together to release the arm.

Both upper and lower spray arms become clogged by different objects like paper, plastic, stems from fruits, etc... These are particles that cannot br dissolved be the detergents.

SOURCE: Not cleaning upper rack

You'll need to clean the food chopper in the base. Make sure you've got a torx screwdriver.

http://forum.appliancepartspros.com/dishwasher-repair/8174-kitchen-aid-dishwasher-wont-clean-top-rack-items.html

SOURCE: Maytag MBDF550Aww upper spray arm doesn't spin.

Cleaning the filter was the right thing to try.
Since you don't see cracks/breaks on the spray arm and it appears that it is spinning freely, I doubt that replacing the spray arm will fix your problem.
If your dishwasher is several years old, your problem is likely a failing pump motor, but before you swap that out, check that the impeller is not damaged. Good Luck!

SOURCE: Need to clean out the upper spray arm and so would like to remove it (like I did the lower one) and clean it out. Help!

We have a PDW7800J01WW that I removed all the arms on recently.
There is a single hex-head screw that acts as the pivot at the center of the top most arm. Just remove this screw to remove the spray arm.
Be very gentle reinstalling it though as it is easy to over torque it and strip the plastic hub it screws into.

SOURCE: will not clean dishes on the upper rack

Make sure you get water to the dishwasher. Check to see if the water shut-off valve (located under the sink) is open. If you get water to the dishwasher, but there is still no water inside during the fill cycle, the problem might be with a faulty water valve (located at the bottom of the dishwasher, behind the kick panel, on either side), in which case replace the water valve.

If there is not enough water, the dishes would not get cleaned. This could be caused by a partially closed water shut-off valve (located under the sink), or a faulty dishwasher water valve (located at the bottom of the dishwasher, behind the kick panel, on either side).

There is usually two, sometimes three spray arms in a dishwasher. Make sure there is no debris blocking the holes inside each spray arm.