If you have to perform fixes on your Lem LX 1 then it is usually a good idea to have access to a Workshop Manual to use as a reference if perhaps you want to know how to take off a particular part for example Gearbox and match it again in the correct manner.
Lem LX 1 Workshop Manuals will give exact diagnostic guides for the vehicle so if something is wrong it can help you find out what the situation is and the best way to fix it. Then you are able to analyse if this can be done by yourself or in the event the job is just too big you could make a reservation for your LX 1 in to a suitable mechanic.
Lem LX 1 manual