If you want to carry out maintenance tasks for your BMW R 45 then it will always be a good plan to have a Workshop Manual to use as reference in case you want to know the best ways to remove a certain part for instance the Clutch and fit it again safely.
BMW R 45 Workshop Manuals offer you detailed diagnostic details for your automobile therefore if something is playing up it helps you figure out what the problem is and how you can resolve it. Then you are able to decide if this can be done yourself or if the job is simply too big you are able to book your R 45 in to a nearby friendly mechanic.
BMW R 45 manual