If you choose to perform maintenance on your Italjet Grifon 900 then it is always recommended to possess a Workshop Manual to use as a guide in case that you need to know proven methods to strip off a specific component for example Gearbox and install it again accurately.
Italjet Grifon 900 Workshop Manuals will give you exact diagnostic info on your car or truck therefore if something is faulty it can help you understand what the problem is and tips on how to repair it. You can then evaluate if this can be done yourself or that the job is too big you can still make a booking for your Grifon 900 into a trusted friendly mechanic.
Italjet Grifon 900 manual