Hey guys lil help please.I was wondering if the fuel tanks on your 650s/700s are pressurized and why?The 650 A/Cs are not,at least not the 2004s.I was lead to beleve that the prairie has a pressurized tank.

 

The tanks on the 657/700s are not pressurized. They have a vent system that is over-engineered IMO, and it can become blocked pretty easily, leading to pressure building up in the tank. The tank on my 650 was pressurizing and I didn't want to dick around with the vent system, so I put some vent holes in my fuel tank cap and haven't had any trouble since. The cap on the 650 can be taken apart, so i took it apart, drilled the holes in some inconspicuous locations and put the cap back together. You can't tell I did anything to my cap when you look at it.