If you wish to execute maintenance tasks for your Veli 150 T 3 then it is usually a good plan to own a Workshop Manual to keep just for a guide if perhaps you want to know the best way to remove a certain component much like the Clutch and match it again efficiently.
Veli 150 T 3 Workshop Manuals offers you targeted diagnostic guides with regards to your car therefore if something is broken it helps you work out what the issue is and tips to correct it. You can then decide if you can do this by yourself or in case the job is just too big you can book your 150 T 3 in to a trusted mechanic.
Veli 150 T 3 manual