I NEED TO CHANGE THE ORFICE IN THE OVEN FROM NATURAL GAS TO PROPAIN WHERE IS IT LOCATAED AND HOW DO I DO THIS??

You have to change to a natural gas orifice when going to natural gas.
The propane orifice has a much smaller hole for the the propane to feed through. You need a repair man to do this. if you don't know what you are doing you could have an explosion.

NEED TO CHANGE GAS ORIFICE. THEY ARE DIFF. BETWEEN NATURAL GAS AND PROPAIN THATS ALL YOU HAVE TO DO.

possibly the air shutters were not adjusted when new for propane use,most units come set-up to burl natural gas but need conversion to burn l.p. gas by changing the orfices on the top burners,then turning the orfice spuds down on the bake and broil orfices as to control the flow of a heavier gas and also opening the air shutters on these venturi gas feed tubes next to these orfices

If you haven't changed the stove regulator to natural gas this could be your problem. If you are not comfortable with making this adjustment pleaee check with your gas company or a licensed appliance service person to do the work it should take just a few minutes.

Yes you will need to change them. The flame will be large and eratic if not changed.

First thing you will need to do is find out from the manufacturer of the oven if there is a conversion kit available and if the appliance is convertable. If there is then you can order the kit and follow the installation instructions. Also check the back of the oven for an envelope that may contain the gas orfice replacement heads to convert the appliance to natural gas. If you find the replacement orfice then you will need to remove the lp orfice from the burner and install the natural one. Then the appliance gas regulator will need to have the pressure adjusted lower for natural gas. There is usually a removable cap on top of the regulator on the oven. When you remove this cap there is usually a small metal ring that you can remove and flip over. It will say "nat" on one side and "lp" on the other. You will need to turn this ring over and re-insert so it displays "nat". This will change the gas pressure from 13 inches W.C. to 4 inches W.C. Some appliances only require the orfice change and no regulator adjustment but make sure that is the case with your oven because if you feed 13 inches W.C. pressure to a burner with a natural gas orfice...YOU WILL GET A HUGE BURNER FLAME AND MAY BURN/FLASH YOURSELF...So use extreme caution when converting a gas appliance. And if the oven has a pilot you will need to adjust the pilot pressure or change it's orfice if it has one. If it is electronic ignition no adjustment to that will be needed. Also unplug the electrical power the the unit while working on it.

go to the pool store or supply house or call the manufacture if anyone there speaks good english. and tell them what you got and that you need the propane orfices and the propane gas valve and regulator for your pool heater. you'll need to change the orfices, gas valve and regulator.

how do I adjust my regulator on a gas range

depends on dryer the orifce is on the end gas valve inside dryer best to have it done by propaine man

need to change from natural to propain sr42 g