This may be common knowledge for some here, but wasn't for me. I had the bike lay down on me Monday on the way home from a weekend camping trip. First time in her 82,000 mile life she needed a ride home, and could have probably been fixed along side of the road if I had know or understood. Still not sure that I fully understand how it happened but lack of better way of explaining the bike ran out of gas running down the road. Messed with it for a bit along side the highway till I finally got tired of the traffic getting so close and getting cover with gas. If I released the fuel line from the tank there would be a steady stream of gas flowing through the check so the valve was not seating, and if I hooked the line back up and pressed up hard the bike would run. Long story short hauled the bike home and pulled the check valve/ quick couple from the tank and found the o-ring had somehow dislodged from the set and was preventing gas from reaching the fuel line. Quick push with a pick and it worked back into the register and now is working fine. Maybe this will help someone in the future.