If you have to execute maintenance tasks on your Gilera Nordwest then it will always be recommended to have access to a Workshop Manual to use as a reference if perhaps you want to know how to strip off a specific component for example Brake Pads and match it again in the right way.
Gilera Nordwest Workshop Manuals offer you special diagnostic facts for your vehicle therefore if something is playing up it can help you figure out what the problem is and ways to correct it. You will be able to determine if you can do this by yourself or if the job is just too big you can actually book your Nordwest in to a decent friendly mechanic.
Gilera Nordwest manual