If you want to do adjustments on your TVS Fiero FX then it is usually a great idea to own a Workshop Manual for personal reference in case you want to know the best ways to remove a specific part like the Drive Shaft and fit it again efficiently.
TVS Fiero FX Workshop Manuals offer you targeted diagnostic guides for your car therefore if something is not working it can help you determine what the issue is and how you can resolve it. You will be able to analyse if this can be achieved by yourself or in case the job is too big you are able to book your Fiero FX right into a nearby friendly mechanic.
TVS Fiero FX manual