Chaz -Welcome aboard this crazy world of busnuts! By looking at your bus pic, it appears that you've got a 35-foot P8M4108, if, in fact, it's a '73. But the VIN will ID it correctly.Where is the VIN on your coach? If you're not sure, there are two places to find it: First is the ID plate riveted to the dashboard in the entry stairwell, above the emergency equipment compartment. Second is inside the exterior tool compartment loacated underneath the driver, stamped on the "frame rail". It will say something like "PD4107-XXXX" or "P8M4108A-XXXX". Share with us what you find, and we'll ID the coach properly for you.Your coach came stock with a 165 gallon fuel tank. Figure 140 of that is useable, to avoid the re-prime situation you're now facing. Sounds like Gumpydog may have sent you instructions on re-priming the engine privately, which is a good thing - easy to print out and follow.Basically, you've got to refill the fuel filters and pressurize the system slightly to push fuel thru the heads. Some folk rig up a gallon garden sprayer that they attach to a fitting mounted on the primary fuel filter, simple and effective. Others have used a hydraulic brake bleeder, and some have gotten really fancy and installed a little fuel pump in the feed line from the main tank. Lots of options, but the best is to not run out in the first place!! LOL. . .Good Luck, and HTH. . .