This schematic diagramme shows the systems layout of a Walter 109-509.A-2 motor. By following it through, you can see the relationship between the major components of the Walter motors. Although much of it applies to most of the 109-509 series, in this case there is no eletrical starter, and there have been added a T-Stoff starter tank, and fuel line steam ejectors.

For a more complete discription of many of the motor parts, take a look at the Design Page which has links to more detailed technical information.