Haha, I know! I have all the right tools but the bolt itself is giving me trouble! I did try vice grips but the thing wouldn't budge! I will try PB blaster or some other penetrating oil. Thank you!ouch, thats just wrong! I would give vice grips a try, clamp on tight and see if you can get it turning. Maybe hit it with something like PB Blaster a couple times the day (if you have the time) before you try.
I'm sure this goes without saying but I'd replace that one for sure.
Well. If you round off a left-hand thread bolt, then you will be in trouble. Left-hand thread bolts are pretty rare these days.They might be a solution but my only concern that they only work CCW and could break in manner of greater destruction as the rust problem seems to be pretty extreme. I have set but I have yet to use them but on hand just in case. I usually have pretty luck w/o the use of EZ outs etc. Just using a lot patience is the best practice in bolt removal but I'm still prepared for other alternatives.
This bolt head is already 8mm stock. Gonna take a very skilled hand to make it into a 7mm/6mm but if there's a will there's a way. I have had them so rounded that a 12 or 6 point box end wrench/socket could be pressed/hammered on. In order a 9/32", 7mm, 1/4" would be candidates. I replaced all my seat mounting tab bolt with a standard SS M6 polished/buffed (10mm head), washer and a small piece of shaped rubber between the tab and fender. A touch of anti seize on the threads.I have ground new flats on bolts like that to smaller size. If you have the room for a grinder or even a file. Go down to the next smaller socket. 6 point socket only for the best results.
Go underneath the fender and soak the threads emerging out the nut with WD-40 or blaster. Wire brush the area to remove rust from the bolt threads. Much easier if scooter is up on a jack with rear wheel removed. After soaking, using vice grips, start applying tightening torque first, then loosening torque, in small baby steps. Back and forth it a few times increasing loosening torque. That should do it!