Supplement to 3500S Owner's Manual 

If you are lucky, your Federal 3500S came with the original hardbound owner's manual. These manuals are pretty classy with a wealth of information and color photographs, and they often got separated from the car. Rover issued a a supplement to this manual in December 1969 that is even more likely to be missing after thirty or so years on the road and several owners. There is some useful information in this supplement about setting the car up to run properly on fuels of 96 to 99 octane as opposed to the 100 octane required for the car's standard emission control setup. Since it is sometimes hard to be sure that we are getting 100 octane anywhere these days, and since most areas do not require that 1970 vintage cars pass an emissions test, I thought some owners might want to follow the instructions in this supplement to adjust the car for octanes between 96 and 99. Click on the thumbnails below to read each page. The document is a little vague about the status of the AED during the adjustment procedure, but my opinion is that that the AED plunger should be in so that the AED is out of the loop while adjustments are being made.