Old Craftsman won't run. Starts and runs just fine when starter fluid sprayed directly in carbeurator but doesn't seem to be "drawing" gas. Have replaced everything including carbeurator, solenoid, fuel filter in gas line, seat safety switch (and tried bypassing that).

Try blowing through the line going back to the tank.

Umm - we did find the problem - could have saved ourselves a LOT of $$$ by starting with replacing the $5 gas line!

Good Job.