If you need to undertake adjustments for your Honda CRF100F then it will always be a great idea to have a Workshop Manual to keep just for a reference in case you want to know how to take off a certain part for example, the Drive Shaft and install it again safely.
Honda CRF100F Workshop Manuals gives you certain diagnostic information for the car or truck so if something is playing up it helps you figure out what the issue is and how you can repair it. Then you are able to evaluate if you can do this on your own or in case the job is simply too big it is possible to make a reservation for your CRF100F into a suitable mechanic.
Honda CRF100F manual