there is an adjustable grubscrew that is loctited in from build. you have to look hard to see it at the inside base of the lever, it adlusts the position of the pushrod that goes onto the master cylinder, here's the relevant bit from the manual:
Checking and adjusting operating
clearance at front brake/clutch levers
Clutch
• Remove the lower section of the clutch lever fitting.
• Remove the handlebar weight.
• Remove the grip.
• (Heated grips) Release the grip and pull it outwards.
• Release the cold-start actuator and pull it outwards.
• Back off the adjusting screw.
L Note:
Thread is secured with Loctite, if necessary heat
slightly prior to facilitate removal.
• Remove the pivot screw of lever and remove the
lever.
• Clean and degrease the threads of the adjusting
screw.
• Coat the threads of the adjusting screw with
Loctite 648 or Loctite 270 and screw it a few
turns into the lever.
• Apply a light coat of Optimoly MP 3 to the pressure
pin of the adjusting screw.
• Install the lever, making sure that the metal tab
on the microswitch is correctly positioned.
• Tighten the adjusting screw until the lever has
zero play.
• Tighten the adjusting screw another half turn.
• Apply sealing lacquer to the adjusting screw.
• Fully assemble the fitting.
Tightening torque:
Pivot screw, handlebar lever ........................ 11 Nm
(Tuflok Blue thread-locking compound; screw can
be released and tightened a number of times)
