If you choose to carry out fixes on your own Diamo Retro 150 then it is usually a good idea to have access to a Workshop Manual to use as a reference if perhaps you want to know simple methods to remove a specific part for instance the Door and fit it again efficiently.
Diamo Retro 150 Workshop Manuals will provide you with precise diagnostic guidelines with regards to your vehicle so if something is wrong it helps you figure out what the situation is and easy methods to repair it. Then you are able to assess if this can be achieved yourself or if the job is too big you can still book your Retro 150 into a decent garage.
Diamo Retro 150 manual