In step 8 it says to "Remove the 2 mm hex set screw from the steam valve knob..." Do what it says here except after removing the hex screw turn the steam dial one full revolution tighter (in the "off" or "no steam" direction) and then tighten the hex bolt back again. You can fully remove the hex set screw if you want to make sure everything lines up properly before screwing it back in. Try it out. If this does not work, remove the hex set screw and then unscrew (or turn towards "open") the steam knob until it comes out all the way. Clean the internals with some vinegar, rinse, and put back together. Hope this helps.
Thank you for posting this! When I lost the ball in my pump the first time I was able to find it but the second time it bounced off my table onto the floor and directly into an alternate universe. I used the idea of another poster here to find a ball bearing but I had none! I then did some more scavenging and came across my roommate's girlfriend's nail polish collection. After coaxing out one of the steel balls from a bottle of nail polish with the help of a magnet, I cleaned it up with some acetone and voila! Another ball for the pump. A word from the fool: don't open your pump up unless you absolutely have to!!!
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