- Nice job man , Keep up the DIY spirit , it will reward you in long run.
The drive chain is making a grinding noise. I guess it is the end of its limit. Will replace with a new chain and sprockets when the bike completes 30,000 km. Other than that, there is no problem. It runs smooth.
Drive chain noise it due to tight running or tight links . Lube graciously and check if its the same . Did you check the maker of chain ? . Its like lucky draw , some bikes like mine came with Diamond kit and some had Hero ones.
I guess yours is diamond or rolon kit. New set will cost around 600/-.



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