If you want to execute fixes on your own Yamaha WF 250 F then it is always a good plan to have access to a Workshop Manual to use as reference in case that you need to know proven methods to strip off a particular component much like the Door and fit it again appropriately.
Yamaha WF 250 F Workshop Manuals offers clear distinct diagnostic information for your car or truck therefore if something is faulty it helps you discover what the problem is and tips on how to resolve it. After that you can determine if this can be done by yourself or in case the job is simply too big you can actually make a reservation for your WF 250 F in to a decent garage.
Yamaha WF 250 F manual