If you have to carry out maintenance tasks on your own CSR Custom 125 then it is usually a good idea to possess a Workshop Manual for a reference in case that you want to know proven methods to take out a particular part including Gearbox and install it again adequately.
CSR Custom 125 Workshop Manuals offers you detailed diagnostic information on your vehicle therefore if something is broken it will help you find out what the issue is and ways to correct it. You can then determine if you can do this on your own or if ever the job is simply too big you are able to book your Custom 125 right into a nearby friendly mechanic.
CSR Custom 125 manual