by Wolffarmer » Fri Mar 28, 2014 9:20 pm
Probably the biggest problem you will have is with the NRV. Very tricky in these as unlike a Coleman there is no tube that takes the air above the normal level of fuel and there is no positive shut off needle valve in the pump. I would imagine the pump O ring is a bit on the brittle side and needs replaced. Should be able to find one locally. If not then Old Coleman Parts should have some. You can open the NRV with a little pointy tool pushed in from the pump side and you will see a little tiny valve on the end of the pump tube that goes in the the fuel. It looks like a small engine valve. These things can leak, can leak a lot, can leak a whole lot. Some people roll little tiny O rings on them. Last one I worked on was from a Polon stove and there is no room on that for an O ring so I took my tooth brush and brushed the seating areas and now that pump works just dandy.
The thermos are a good stove. Biggest pain beside the pump is the wind wings.
I just ran into something on the Coleman forum. they take a #112 O ring. And one guys says no oil on it also. You will probably also need the O ring for where the pump tube seals to the fount.
Randy
"these guys must be afraid of the dark"