How should I clean my dishwasher filter?
Did some digging for you:
http://www.appliancerepair.net/dishwasher-repair-3.html

Here's the remove of the filter cover:
http://www.partselect.com/Models/GU2275XTVY1/Sections/PUMP-AND-MOTOR-PARTS/?ModelID=1619670&amp;ModelNum=GU2275XTVY1&amp;mfgModelNum=&amp;ManufactureID=3&amp;Selected=HALWT3WI&amp;Position=9&amp;mfg=Whirlpool&amp;Type=Washer&amp;Mark=9

Here's the arm parts:
http://www.partselect.com/Models/GU2275XTVY1/Sections/LOWER-WASHARM-PARTS/?ModelID=1619668&amp;ModelNum=GU2275XTVY1&amp;mfgModelNum=&amp;ManufactureID=3&amp;Selected=JY7US5YH&amp;Position=7&amp;mfg=Whirlpool&amp;Type=Washer&amp;Mark=7

So removal is righty loosey :)  DEFY THE RULES!
https://www.youtube.com/watch?v=BGZYhEljgPw

Good luck!!!