BMW C1 125 Workshop Manuals
If you need to carry out fixes on your own BMW C1 125 then it is usually recommended to have a Workshop Manual to keep just for a reference in the event that you want to know tips to strip off a certain component like the Chain and match it again accordingly.
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BMW C1 125 Workshop Manuals will provide you with targeted diagnostic info for the bike so if something is wrong it will help you work out what the issue is and easy methods to correct it. You will be able to evaluate if this can be achieved on your own or if the job is simply too big you can still book your C1 125 in to a decent mechanic.