Dear its my 1st experience of Suzuki GS, before i had many RP 125, so i am little bit new in experience , there were very bad sound in head tapa. Mistri told its came and rockers, after opening, he asked to insert piston and rod too. this was the reason. i was thinking to change or to check Ignition coil and cdi unit, as battery was also not being charged, so changed Magnet coil assy. now charging issue is resolved.
which coils can be checked in gs, other then stock coils. as mistri told me that cg coil can be inserted