If you have to do maintenance tasks to your Diamo Velocity 150 then it will always be a good plan to have a Workshop Manual to keep just for a reference in case that you need to know easy methods to remove a certain component for example the Wheel and install it again in the right way.
Diamo Velocity 150 Workshop Manuals can provide targeted diagnostic facts for the vehicle so if something is faulty it helps you discover what the problem is and some ways to correct it. You will be able to evaluate if you can do this by yourself or in case the job is too big you can actually make a reservation for your Velocity 150 into a trusted car garage.
Diamo Velocity 150 manual