My Makita one is 450Nm on fastening, electric ones are the are usually rated more than double that on loosening I think
It did occur to me that as I hold the rattle gun the nut might stay still and the bike start spinning around the nut so I am a bit wary. Fortunately it has variable power 1 - 5 so will start on maybe no.2 first and work up from there.
Nah, far too old, there's nowt wrong with it just been done up too tight. However, where I will take it to is the dealer I bought it from, who put the new tyres on when I bought it Feb last year, they did them up, they can undo them if I can't get it off. I'll just make sure they don't use a rattle gun to do it up again but use a normal wrench and torque it to the correct value by hand.
to clarify, (immhoo) Paul got it just about right in quote below. Many other manufacturers adopt the same principle including Yamaha. i.e. - It's thought that it's safer for mirror to become loose when struck while moving, rather than risk breakage.
Just make sure your fully strapped down so you don't start spinning round and get constricted with the air line TB
Glad someone pointed out the left handed thread factor. I was about to. Now, just to add, you can get a very nice blank ended screw cover things to go over the unsightly hole when you put the new moved mirrors on. BLanking plugs apparently https://www.amazon.co.uk/Xitomer-Blanking-M8x1-25-Streetfighter-Monster/dp/B07NRJY2X8
Not from there you can't But they have them here... https://www.ebay.co.uk/itm/2PCS-Uni...sid=p2385738.m4383.l4275.c10&var=602306561399