Need some help with a Ford D Series

Great cold start device and no heat needed or provided on the D series we had. The last had to be accessed via the hinged front grill(which had to be opened when the cab was tilted). Fords had used a similar device on their original 4 and 6 D type engines, although it was not necessary to open the throttle on the pneumatic governed pumps. Pushing in the button simply allowed the fuel rack to travel further.