You need to remove the bottom part of chain cover only - 2 number 10 nuts. If you suspect the clutch plates, have them replaced.
Clutch plate set is quite cheap. Go to a good Hero ASC nearby to you and they shall do clutch plate replacement, rotor filter clean, oil screen filter clean and tappet adjustment for you - all at once.
Plus cost of a clutch side gasket b clutch plate set c one bottle Hero oil - thats it.