Dude.. Theres no need to take your drive apart.. 810s are a bitch too work on..
Just get a normal 5.25" cleaning disk and cut a small piece of index-card or other thin card stock (Or if you really wanna do it right, sacrifice an old floppy disk and cut a piece of the black plastic instead of using the paper card-stock).. Place it over the long oval shaped access hole on the TOP SIDE of the cleaning disk, and secure it in place with a wide piece of cellutape.. make sure the piece of material that you cut and the piece of tape is larger than the oval access hole, but small enough not to interfere with any of the other holes.. Make sure you can still spin the center hub of the cleaning disk by hand.. You now have a SINGLE SIDED Cleaning disk!
Now.. instead of pouring alchohol (cleaning fluid) onto the cleaning disk, use an eye dropper and only apply just enough cleaning fluid to saturate the white material.. You would of course, apply this to the oval access window on the BOTTOM (uncovered) side of the cleaning disk ONLY...
Now stick the disk in the drive, with the side you just covered facing up, and let her rip.. Won't tear up your felt, and will clean the lower head (single sided drives read/write to the bottom side of the disk).
Oh yeah.. When you're done, put this cleaning disk aside and be sure to only use it for single sided (eg. 810 & 1050) disk drives.. Keep another DOUBLE SIDED cleaning disk for your XF551s and PC floppy mechs..
Edited by MEtalGuy66, Sat Sep 19, 2009 7:02 AM.