first, the tiger you have will be inch-based sizes.
second, do you have a manual for this bike ?? if you do, go to clutch adjustment and adjust the clutch. there`s more to it than just adjusting the cable. i can`t remember it off the top of my head as its been a while sinse i did one. don`t go ripping the gearbox appart untill you`ve done the clutch.
KK