If not so:
Place the motorcycle on the stand.
Slip off the rubber gaiter (1).
Loosen the locknut (2).
Rotate the adjuster (3) until setting the specified free play.
After adjusting, tighten the locknut (2) and check free play again.
Refit the rubber gaiter (1).
Warning! Turn the handlebars and ensure that idling speed is unaffected by handlebar movement. Open the throttle and ensure that the twistgrip springs back to the closed position smoothly when released.