| 123 / | HD | INTERNAL-COMBUSTION ENGINES | 
| 319 | DF | ENGINE SPEED REGULATOR {16} | 
| 395 |  | .~ Open loop condition responsive {4} | 
| 396 | DF | .~.~> Resistance or override acts on input connection to regulator {2} | 
| 399 | DF | .~.~> Having an electrical device between input and speed regulator | 
| 400 | DF | .~.~> Mechanical connection between input and speed regulator | 
| 401 | DF | .~.~> Fluidic device between input and regulator |