Adjusts operating mechanisms such as valves, tappets, carburetors, governors, ignition systems, points, central linkage, clutches and brakes, using feeler gauges, dial indicators, special gauges and templates. Replaces subassemblies, components and accessories, such as starters, fuel pumps, carburetors, generators, radiators, universal joints, brake shoes, engine mounts, low pressure lines and fittings.