If you wish to perform maintenance for your Innoscooter EM 2500 Lithium then it will always be recommended to possess a Workshop Manual to use as a reference should you need to know how you can take off a specific component for example, the Gearbox and install it again accordingly.
Innoscooter EM 2500 Lithium Workshop Manuals will provide you with certain diagnostic wisdom for your car therefore if something is not working it will help you find out what the issue is and some ways to resolve it. You can then decide if you can do this by yourself or if the job is just too big you could book your EM 2500 Lithium in to a local mechanic.
Innoscooter EM 2500 Lithium manual