The front sprocket nut and washer saga

[Dead Eye]

just spotted this.
no idea if my bike has had this done or not.
got a rough idea (and i mean rough!) where to look etc, but can someone explain really simply so that an idiot like me can understand!
thanks

Just remove the black cover that is just above and forward of the gear selector - if you are unsure its the one where the chain disappears behind it. Should be a nut holding the sprocket on and it will be incredibly obvious. If it isn't there then worry, if it is, then you're probably fine All you need is a 10mm spanner / socket plus an Allen key - no idea what size, but I think its about 5mm? I have about 4 sets and have managed to mix them up so I just try until I get the right size