Thanks, can I ask how to remove the top casing, and do I need a New Pedal/Part? Thanks, can I ask how to remove the top casing, and do I need a New Pedal/Part?

i would suggest taking bottom plate off remove brushroll. then check and see if there are any screws that may be holding casing on, or if there are just retainer snaps. either way once you have figured that out simply work the casing off. I've never worked on this machine so here is a link to a manual hope it helps.http://www.retrevo.com/d/df/document.pdf... i would suggest taking bottom plate off remove brushroll. then check and see if there are any screws that may be holding casing on, or if there are just retainer snaps. either way once you have figured that out simply work the casing off. I've never worked on this machine so here is a link to a manual hope it helps. http://www.retrevo.com/d/df/document.pdf?doc=79722c9e8d31b52e391f2e4f34e53104&ts=1357686634142&rk=0.9055451332354507