If you need to perform maintenance tasks for your Lem R2 then it will always be recommended to own a Workshop Manual to keep just for a guide just in case you want to know techniques to take off a particular part like the Exhaust and fit it again the right way.
Lem R2 Workshop Manuals gives you identifiable diagnostic facts on your car or truck so if something is not working it can help you determine what the situation is and the way to make it better. You will be able to decide if this can be done on your own or if ever the job is just too big you can still make a reservation for your R2 in to a local mechanic.
Lem R2 manual