k i usually dont request rep, some do, i don't, but for this i wouldnt mind some. soooo
in a nut shell you:
warm upp your blaster with the plug that is in it
shut it off and put a new plug in
start up and go WOT all the way to high rpm's in gear 5 or 6 (different opinions, i preffer 5) pull the clutch, shut the engine off and stop, must not let it idle down before you shut it off
where gloves cause this gets hot
take that plug out, put the old one in, and ride back
using a hack saw cut a chunk out of the thread, all the way down to expose the core
if it is a light brown u are probable lean, if it is grey slash white you are really lean.
I use the coffee scale meaning you want to shoot for a colour resembling a coffee with one cream, maybe darker cause its better to run rich.
thats it