I have a HydraMaster Titan 575. Yesterday (Saturday) I had a single job. Showed up at the house, started the machine so it could warm up, and went to the door. While standing at the door the machine cut off. I tried to restart to no avail. Smelled gas. Assumed it was flooded. Waited 15 minutes for no fuel smell and tried to restart. Still no go and the fuel smell returned. I called the job off, rescheduled, and went home. The waste tank is empty. The float seems to work. If I'm smelling fuel does that mean the fuel pump is still working or is it possible that I smell fuel but the pump is NOT working? Any thoughts?