Technical information on carburetion and fuel-feed methods: six scanned pages describing how the vacuum tank draws fuel from the rear tank and feeds the carburetor, with diagrams and troubleshooting. Click a page to read it full size.
Vacuum tank data, page 1
Vacuum tank data, page 2
Vacuum tank data, page 3
Vacuum tank data, page 4
Vacuum tank data, page 5
Vacuum tank data, page 6
For step-by-step repair, see How to Repair a Vacuum Tank.
Information donated by Jan Arnett.