Any solution for my byke problem -rx135?. Review on Yamaha RX135

I could say My Rx is my first wife..  please dont mind I m calling it as wife (women), I am really proud to say I m the owner of Yamaha... I owned rx-100 in 2003, becoz of my abroad trip I had to sell. now I m back to India and could not able to take rx-100. Now I own '98 model Rx-135.  although I m getting the milage of 53km/ltr in bangalore-terrible traffic..

Now I m facing a problem with the jurking.. i can not   leave the accilerater, it starts jurking a lot... every time I have to use the cluth whan I m not using the accelerator.. becoz of this I can not control the bike with the gear.. when I asked for the reason, the workshop guy asked me to repaire or change the clutch bell set and  also clutch horsing set...

i just want to know is that the main reason for my problem? kindly help me out.. I dont like a single unwanted sound comming from my bike..