05-07-21, 01:21 PM
This is really old hat now and all the info is in the FZS600 folder. The washer doesn't fail and will still be in place and bent over when the thread destroys itself, I mean destroys itself. The bike will keep going, until it grinds it's way through the sprocket cover enough for the sprocket to fall off, the cover is what holds the nut on and interlocked with the lay shaft splines, driving the sprocket. Once it's lose it will begin to wear away the lay shaft threads, it's doesn't take long before they're shot, even with some thread left the nut will not lock up even with Loctite 270. You'll have to change the lay shaft.
The Loctite application helps prevent I repeat HELPS the threads from destroying themselves due to a design flaw, it can still happen especially if you use 243 or nut lock as it was known. I tried using it when this saga was first noticed, all still came lose using 243 it took anywhere between 2 - 6k but they all came lose. Using 270 as far as I'm aware to date, none I did came lose, the bikes I tested this on were a mixture of despatch and everyday commuters all weather bikes, doing up 2k a week. There's also a point where the threads are too worn even for 270.
It's up to you.
The Loctite application helps prevent I repeat HELPS the threads from destroying themselves due to a design flaw, it can still happen especially if you use 243 or nut lock as it was known. I tried using it when this saga was first noticed, all still came lose using 243 it took anywhere between 2 - 6k but they all came lose. Using 270 as far as I'm aware to date, none I did came lose, the bikes I tested this on were a mixture of despatch and everyday commuters all weather bikes, doing up 2k a week. There's also a point where the threads are too worn even for 270.
It's up to you.
Later