My Mr. Heater Portable Buddy keeps shutting off after a few minutes of use. The pilot flame became yellow which signaled there was something obstructing the propane. Taking this thing apart can be a little frustrating at times but it's simpler than it seems. There are many videos that demonstrate how to maintain a Mr Buddy heater. I couldn't find any videos that showed how to take apart a Mr Buddy heater in bad need of maintenance as the routine cleaning wasn't doing the trick. Check out some of the other videos for some useful tips to prevent future failures from you Mr Heater Portable Buddy. #MrHeater #PortableBuddy #PropaneHeater