do I need to replace front sprocket nut

[mobile mouse]

Hi,


Bike fitted with 12mm front sprocket.
If and when I need to change chain and sprockets front/rear.


Do I need to replace the present 12mm nut or can I re-use present nut....

[bandit]

You can reuse the 12mm nut if threads are ok,just make sure the washer is good to bend to lock the nut.
If required,
https://www.wemoto.com/bikes/yamaha/fzs_600_fazer/98-99/picture/front_sprocket_retaining_nut_kit_oem/




   

[darrsi]

Actual recommended torque setting for the newer 12mm nut is 90Nm, but a few of us thought that might be a bit risky due to the thread issues so only used 80Nm with a bit of Loctite, as well as the washer.
9mm nut was 70Nm if memory serves me correctly.