Coleman 425 Classic White Gas (Naphtha) Stove

Filling:

  1. Only fill outdoors.
  2. Ensure the area is clear of open flames.
  3. Close fuel valve.
  4. Close pump knob.
  5. Remove fuel cap. If the stove has been used recently, open fuel cap slowly.
  6. Place tank on a level surface.
  7. Tip tank on an angle. Generator tube should be at a 45 degree angle.
  8. Use a funnel and pour in fuel.
  9. Fill to the bottom of the filler neck (3/4 full).
  10. Replace fuel cap.

Pumping:

  1. Close fuel valve.
  2. Close pump knob.
  3. Turn pump knob one full turn counter clockwise.
  4. Use the thumb to cover hole in pump knob.
  5. Pump 35 full straight strokes. Do not twist or bend while pumping.
  6. Close pump knob.

Lighting:

  1. Stove is to only be used outdoors.
  2. Close secondary burner control.
  3. Close fuel valve.
  4. Follow pumping instructions.
  5. Turn the lighting lever to the up position.
  6. Place lit match or lighter at edge of primary burner.
  7. Turn the fuel valve 2 full turns counter clockwise.
  8. The primary burner should light with a yellow-orange flame.
  9. After about 1 minute the flame should become blue. Turn lighting lever down.
  10. Open pump knob and pump a few more times if the flame loses intensity.

Shutting Down:

  1. Turn secondary control off
  2. Turn fuel valve off (clockwise). Theremay be a residual flame. Let it burn out.
  3. Let stove cool.
  4. Remove tank from stove base.
  5. Ensure area is clear of open flames.
  6. Slowly open fuel cap. Should hear hissing as gas escapes.
  7. Clean surfaces of tank and stove base.
  8. Put tank into stove.
  9. Close stove.

Important Notes:

Liquid white gas (naphtha) burns yellow-orange. It is very sooty and will make pot bottoms dirty. It is not very hot.

Gaseous white gas burns blue. It is clean. It is very hot. This is what you should be cooking on.

Do not over pump the tank. Too much pressure will cause the stove to flood. Evidence of flooding is a constant yellow-orange flame or fuel leaking around fuel valve. If the stove is flooded, turn off stove. Allow the flames to burn out, remove tank, tip stove base upside down and allow excess fuel to drain. Wipe off excess fuel. If there is fuel leaking around the fuel valve, turn off the stove and release the pressure in the tank. Wipe off excess fuel.

The tank is made of steel as well as the stove base. Do not store stove in damp environments. Do not leave water or damp food on the tank or base. Moisture will rust and perforate the tank. As moisture will rust the outside, moisture will rust the tank from the inside as well. Do not get water into the tank or into your fuel supply.

Theory of operation:

Pressurizing the tank causes liquid naphtha to flow through the generator tube into the mixing chamber and into the burners. Lighting the burner burns the liquid naphtha. You will see the yellow orange flame. This heats the generator tube. Once the generator tube gets hot enough the liquid naphtha vaporizes (turns into a gas) and mixes with air in the mixing chamber. You will see the blue flame. As long as the tank is pressurized naphtha will continue moving to the burner.