If you want to conduct maintenance on your own Kawasaki KLX 140 then it will always be a great idea to have a Workshop Manual for a guide if perhaps you need to know ways to take out a particular component like the Gearbox and match it again in the correct manner.
Kawasaki KLX 140 Workshop Manuals will give distinct diagnostic guides for the car or truck therefore if something is wrong it helps you determine what the problem is and methods to repair it. After that you can decide if this can be done on your own or if ever the job is simply too big you can actually make a reservation for your KLX 140 into a suitable repair garage.
Kawasaki KLX 140 manual