If you want to carry out auto repairs on your own Yamaha Neos then it is usually recommended to have a Workshop Manual to keep just for reference in case that you want to know tips on how to remove a certain component including Gearbox and install it again accordingly.
Yamaha Neos Workshop Manuals offers clear targeted diagnostic guidelines for your vehicle so if something is broken it will help you determine what the situation is and tips to resolve it. You can then decide if you can do this on your own or that the job is just too big you could make a reservation for your Neos into a suitable garage.
Yamaha Neos manual