If you choose to undertake maintenance tasks on your Diamo Velux then it is usually a great idea to have access to a Workshop Manual for reference if perhaps you want to know ways to take out a certain part like the Wheel and match it again in the right way.
Diamo Velux Workshop Manuals will give you particular diagnostic details for your car or truck so if something is broken it can help you find out what the situation is and some ways to correct it. You will be able to assess if you can do this by yourself or if ever the job is too big you can actually make a reservation for your Velux in to a suitable mechanic.
Diamo Velux manual