If you want to undertake maintenance tasks for your Polini 911 GP4 Reverse then it will always be a good plan to have a Workshop Manual to keep just for reference in case that you want to know techniques to take off a particular part much like the Wheel Bearing and fit it again in the correct way.
Polini 911 GP4 Reverse Workshop Manuals will provide you with particular diagnostic guidelines with regards to your car therefore if something is not working it helps you determine what the issue is and the way to make it better. You will be able to determine if this can be done on your own or in the event the job is too big you could book your 911 GP4 Reverse right into a suitable repair garage.
Polini 911 GP4 Reverse manual