Setting up suspension

ok i have an 03 zx6r .. its setup wayyy too stiff for me , i barely move the suspension when i sit on it and it feels very stiff when im riding around..
but i wanna set it up right or close to for my weight... the guy i bought it off says its setup for someone weighing around 80kg... i only weigh around 68 kg
so if anyone has a link on how to do it or can give me some tips i would appreciate it!
but i wanna set it up right or close to for my weight... the guy i bought it off says its setup for someone weighing around 80kg... i only weigh around 68 kg

so if anyone has a link on how to do it or can give me some tips i would appreciate it!
