What Jim Said !
Remove the filler cap and blow back into the line leading from the fuel pump's
inlet side , there should (must) be minimal resistance and in 30 seconds or so you'll hear the air bubbling into the fuel tank .
If not , or you have to blow really hard , the intake screen is plugged or there's sediment in the line so disconnect it at the top of the tank and remove the pickup and clean it , DO NOT leave the pickup tube open in the tank !
Brand 'F' has very nice slip fit intake screens I use on most everything because they're cheap and adaptable to anything ~ you just shove it on , no clamps , tools or whatnot .
Of course , using old window screen to make your own intake screen is acceptable as this is the farm way , this truck was designed to handle repairs like this .
If you easily blew it back to the tank , re-connect the line to the pump and dismount the pump and work the lever by hand , in 5 ~ 10 strokes you'll have fuel
gushing out , re-mount the pump and connect the carby line .
You're too lazy to dismount the pump and want to do it the old Dealer Flat Rate way ?
O.K. : prop the throttle to the floor and open the choke wide , operate the starter & place the palm or your hand flat on the carby's throat ~ the vacuum you feel will quickly suck fuel all the way from the tank , through the fuel pump and into the carby , when your hand gets wet with fuel , remove it and the engine will roar into life .
Don't screw around cranking it for 60 secondsa then stopping to have a look etc. ~ you must crank it until your palm is wetted by the incoming fuel .
I hope this works , I also hope you know not to smoke nor allow others to anywhere near this job as fires are a b*tch .
