From memory
It's a mudguard off, loosen air box
Unscrew the clamps on the inlet and air box hose -the throttle body will them come off if you unplug it.
Tank off or at least unbolted
Take plastic cover .
Unclip Throttle end
You can then twist the adjuster out of the Throttle body by spinning the throttle body - feed old cable out/ new cable back in
Reverse above
make sure you have free play in the cable.
Also worth giving the throttle body a clean out - I used WD40 or similar to swill the internal bore - take out tick over screw and flush drilling - makes a note of the number of turns and don't loose the spring.