Yo, SRS,

As cheap as blades are you might just wanta replace it but if have a elctric grainding wheel they make short worl of shapenin' mower blades, but if ya' don't and don't wanta buy a new one then a metal fine and some elbow greese will work. Don't worry about trying to file it down to remove the all the chuncks out of it that you got runnin' over all the stuff you klost in the tall grass 'er it'll probably take days. Best time to take the blade off is while yer draining the oil. Take you a big stick and jam the blade against the body where the grass get blowed out and then its probably about a 17mm (5/8 top 3/4 inch) wrench to loosen the single bolt (Counterclockwise) to remove.... Ahhhh, be careful not to let the gas trickle down the outta the tand when you turn it on itside 'cause the gas may try to do this tru the vent hole in the cap.

Good luck and let me know how things turn out...

As fir me, things are a tad more complicated since I have two garden tractors. One fir mowing. One fir pulling a cart. Plus two weedeaters, two chainsaws, two other walk behind mowers, two garden tillers and a nasty old Grevely walk behind rotory bush-hog all to keep running properly....

Bobert