If you have to carry out auto repairs on your own Honda CRF 150 F then it will always be a good plan to have access to a Workshop Manual to keep just for personal reference should you need to know ways to strip off a particular component for example Wheel Bearing and fit it again adequately.
Honda CRF 150 F Workshop Manuals will give you detailed diagnostic details for your car so if something is not working it can help you find out what the problem is and some ways to fix it. Then you are able to analyse if this can be done by yourself or that the job is simply too big you can actually make a booking for your CRF 150 F in with a local friendly mechanic.
Honda CRF 150 F manual