A few years back I started fixing up Mosquito Magnets.  I started with the corded Liberty Models and now deal mainly with the cordless Independence and Executive models.  I have found that on of the most common failure parts is the propane fuel nozzle.  Below was my first video I made as a tutorial on how to replace the fuel nozzle.

Liberty Plus, Independence & Executive Nozzle Replacement

I sell replacement nozzles on eBay and Amazon to assist you with your repairs.
Here are links to the various components you may need to fix up your mosquito magnet:
Liberty Plus, Independence & Executive Nozzle: https://amzn.to/2QEdX6U
Executive Net:  https://amzn.to/2WeN6nG
Liberty Plus & Independence Net: https://amzn.to/2QHJfd2

Liberty, Defender & Patriot Nozzle: https://amzn.to/2QHJi8I