Bike starts but cuts out - Help!

[young Cruiser]

Hi Guys
I have a Yamaha TW200 and I have had some problems of recently:
1 - It has a loud clacking engine noise during revs and even when idle.
2 - It starts and I have to keep the revs up but if I let go it cuts out.
3 - The gear shifting seems tight as well. (I adjusted the clutch cable but no real change)

I appreciate any help.
Thanks
Young cruiser

[liam]

Hi Guys
I have a Yamaha TW200 and I have had some problems of recently:
1 - It has a loud clacking engine noise during revs and even when idle.
2 - It starts and I have to keep the revs up but if I let go it cuts out.
3 - The gear shifting seems tight as well. (I adjusted the clutch cable but no real change)

I appreciate any help.
Thanks
Young cruiser

hi i think it may be you big end bearing i ad a look at my mates bike which sound like it ad the same problem and thats wat it was on his bike