If you need to undertake fixes on your own Bultaco Metralla 250 GT then it will always be a good idea to possess a Workshop Manual for reference in case that you want to know the best ways to remove a certain component for example Dashboard and match it again in the correct way.
Bultaco Metralla 250 GT Workshop Manuals can offer you certain diagnostic wisdom on your car so if something is playing up it helps you determine what the issue is and tips on how to correct it. After that you can analyse if you can do this by yourself or if ever the job is simply too big it is possible to make a reservation for your Metralla 250 GT in to a nearby mechanic.
Bultaco Metralla 250 GT manual