If you want to accomplish maintenance tasks on your Horex 125 Imperator then it is usually a good idea to have a Workshop Manual to use as personal reference just in case you want to know how you can take out a particular component such as the Gearbox and match it again correctly.
Horex 125 Imperator Workshop Manuals will give specific diagnostic details for your automobile so if something is faulty it helps you understand what the issue is and methods to make it better. Then you are able to analyse if this can be done by yourself or in case the job is just too big you can make a booking for your 125 Imperator right into a nearby mechanic.
Horex 125 Imperator manual