The following pictures shows Volkswagen Beetle Engine Diagram, which applicable for 1200, 1300, 1500 and 1600cc engines from 1954 to 1974 model series. These four cylinder engines are of an air-cooled horizontally opposed design. The four finned cylinder barrels are separately mounted and each pair has a common cylinder head containing the valves and rocker gear. The firing order is 1 – 4 – 3 – 2. Minimum oil pressure at normal operating temperature is 28 psi at 2,500 rpm. The pushrods are actuated by valve lifters at the camshaft end and pass through sealed pushrods tubes clamped between the head and crankcase.
1. Fan housing2. Coil3. Oil Cooler4. Intake manifold5. Fuel pump6. Distributor7. Oil pressure switch8. Valve9. Cylinder10. Piston
11. Oil pressure switch12. Fan13. Oil filter14. Intake manifold pre-heater pipe15. Connecting rod16. Spark plug17. Cylinder head18. Thermostat19. Rocker arm20. Pushrod
21. Heat exchange22. Valve lifter23. Carburetor24. Generator25. Flywheel26. Crankshaft27. Oil pump28. Camshaft29. Oil strainer30. Clutch