A factory manual is an essential component in the repair and maintenance of an automobile. They provide information in print and in form of diagrams about a variety of specific and general automobile problems. These manuals are usually obtained from the original equipment manufacturer if form of a book or a CD. They can also be paid for and downloaded from the original manufacturer site or alternatively from sites that deal with auto and user repair manuals.
A factory manual can be come as the original one or as an after market manual. An after service manual is one that guides and instructs the user on the operations and maintenance of different parts of the automobile that are installed as appendages to the car. These parts may include wheels that have replaced the original ones that came with the car, an audio and visual system, bumpers and other car accessories. In this sense the after service manual is limited in terms of the information it provides for the overall upkeep of the automobile. On the other hand the original factory service manual is purchased from the original equipment manufacturer. It can also be obtained from a different manufacturer, but however it is obtained it aims at instructing the user over the specifics of maintaining their vehicle.
It is more advisable to go for the factory service manual if you want specific guidance and instructions for your automobile. The manual content here is very unlikely to mislead you into misdiagnosing the problem in your car, because the manual is primarily focused on the functions of the automobile. This manual is however relatively costly and this is a factor that causes owners to opt for the inexpensive manual. However, the service manual is inexpensive but has limited information about the specifics of your car; therefore it is not a great money saver in the long run.