If you have to perform repairs on your own AJS Eco 125 then it will always be recommended to have access to a Workshop Manual to use as a reference if perhaps you want to know methods to strip off a certain part including Wheel and fit it again accurately.
AJS Eco 125 Workshop Manuals are able to offer specified diagnostic details for your car so if something is wrong it can help you figure out what the situation is and how to resolve it. After that you can determine if this can be achieved by yourself or if the job is just too big you can actually make a reservation for your Eco 125 right into a suitable garage.
AJS Eco 125 manual