If you have to conduct maintenance tasks to your Orion AGB 34 then it will always be recommended to own a Workshop Manual for reference in the event that you need to know the best way to strip off a particular component much like the Wheel and fit it again perfectly.
Orion AGB 34 Workshop Manuals will give specific diagnostic guidelines with regards to your vehicle so if something is playing up it will help you discover what the issue is and methods to resolve it. After that you can decide if this can be achieved yourself or if the job is too big you can actually make a booking for your AGB 34 right into a nearby friendly mechanic.
Orion AGB 34 manual