* Detecting and diagnosing faults in engines and parts
* Dismantling and removing engine assemblies, transmissions, steering mechanisms and other components, and checking parts
* Repairing and replacing worn and defective parts and reassembling mechanical components, and referring to service manuals as needed
* Performing scheduled maintenance services, such as oil changes, lubrications and engine tune-ups, to achieve smoother running of vehicles and ensure compliance with pollution regulations
* Reassembling engines and parts after being repaired
* Testing and adjusting mechanical parts after being repaired for proper performance
* Diagnosing and testing parts with the assistance of computers
* May inspect vehicles and issue roadworthiness certificates or detail work required to achieve roadworthiness