When there is a breakdown, mechanics get a description of the problem from the customer. They then find the cause of the problem and install new parts or make adjustments. Repair work may include tuning ignition systems, overhauling carburetors, replacing piston rings, honing cylinders, and installing new bearings. They use service manuals to find detailed specifications. A skilled mechanic has the ability to diagnose fuel, electrical, and mechanical problems and to make repairs in the least amount of time.
Some jobs require only an adjustment.
In contrast, a complete engine overhaul may require a number of hours. Small engine repairers often specialize in one type of vehicle. Motorcycle mechanics repair and overhaul motorcycles, motor scooters, mopeds, and all-terrain vehicles. In addition to engines, they may work on other parts. This includes transmissions, brakes, and ignition systems, and make minor body repairs.