If you have to perform auto repairs for your Jawa Chopper 125 then it will always be recommended to possess a Workshop Manual to use as personal reference in case you need to know tips to take off a particular component much like the Exhaust and fit it again appropriately.
Jawa Chopper 125 Workshop Manuals provides special diagnostic wisdom on your car or truck therefore if something is broken it helps you figure out what the issue is and tips to fix it. You will be able to determine if this can be done on your own or if the job is too big it is possible to book your Chopper 125 in to a suitable mechanic.
Jawa Chopper 125 manual