Well! we all gotta do what we all gotta do,
I still think Yamaha knows a lot more about Yamaha's than Joe average on here and I name myself amongst those.
So what I am saying I suppose is each to their own, we decide for our selves and if we foc it up,
WE foc it up.
Mine went up to 90Nm with no trouble at all in fact I was quite surprised how easy it was to get it to 90Nm with my torque wrench, mind you the torque wrench is about 19 or 20 inches long so lots of leverage.
Everyone has their own opinion and you will always have disagreement whether you talking about Batteries ,Tyres, Oil, Spark Plugs, Filter or fuel additives.
Oh! I said earlier that I had an Afam front sprocket to go on the old girl when it is actually a Renthal.
And something else i will do is replace the 12 mm nut and washer with new when I put the new sprocket on, there is a school of thought that says that that when a nut or bolt has been under stress it deforms and does not return to its original state when slackened off, and, when you return the nut or bolt to the original torque it can snap as it was already stressed before tightening.
I know a lot of bolts on cars now have to be replaced once they have been torqued up especially high stress area like cylinder head bolts, so as this nut is suspect I will err on the side of caution and replace the fixing kit.
I purchased 3 nuts and 3 washers when I originally changed the nut for the 12 mm one last autumn.
Some where on here I did read that there was possibly some output shafts that were produced outside of Yamaha factory to help keep up with demand, don't know why it would just be the output shaft? what about the rest of the gear box?????
Anyway I read that the first of the FZS600 had the Yamaha shaft and once the fault was detected the later ones had the up to scratch shaft again, so it was just the intermediate years that seemed to struggle.
There is one fault with that reasoning though as I understand things and that is some of the early FZ6's had a similar problem.
All I know is that I bloody near burst a blood vessel trying to get the original nut off mine and ended up taking it to a garage and the guy took it off with a windy spanner and he had the compressor running as he did it.
<<<< his problem is tight nuts