Belt was pretty loose upon checking with tension gauge. Easy adjustment using gauge and set mine while on sidestand and cold belt. Somewhere between 1/4" to 3/8"is where I set mine.
As others have stated it feels tight at 6-10 mm @10 lbs. If anyone has info on a alignment tool let me know. I've noticed my belt always seems to run to the outside of the rear pulley so I'm guessing it's off from the marks on the swingarm a bit.
I use one of these....it’s ok, but a bit of a faff. You’re suppose to rotate the wheel, and measure the tension at the tightest point. The Profi tool has little cards with notches on it, that helps with measuring alignment on a belt. I have it a little easier, in that I can put the bike on a stand, and rotate the wheel with the bike in the air.
Yes, this tool (which I take as being more accurate) suggests the notches on the swingarm are pretty off. And yes, the belt tends to travel from left to right slightly on the rear sprocket when rotating the wheel - not sure there is actually a lot you can do about that.
I can spend an hour tensioning the belt, trying to get it ‘straight’ regardless of where on the sprocket I measure the alignment, and with the right tension (as you say, I aim for about 9mm-ish).....I’m aware cooler dudes would just look at it, and say “that’ll do........” :grin2:
Ben