How do i insert glue stick in to my emhardt electric glue gun

I do not believe there is a manual. there are instructions on the package. Insert the glue stick and turn on the gun. When the glue melts and the trigger moves glue will come out the front tip. This model has 2 temperatures so if it delivers too fast or runny you can lower the temperature. You pull the trigger to push the glue stick into the heating element to melt the glue. It is pretty straight forward. As the glue stick is consumed you stick in another glue stick. I suggest testing on something before using on your project. Do be careful of the hot end. It will definitely burn you if you touch it and the glue coming out is nearly as hot as the metal.

Pretty basic to use. Insert glue stick from the rear, push it as far as it will go without forcing it, if there is room put another one behind it. turn on gun and wait til it gets hot. stand it on something that will not get damaged from the glue, a piece of cardboard for example, you should see glue start to drip through the tip. now press trigger (gently at first until glue is really hot) and glue will flow, the longer the gun is on the glue will be easier to get flowing. release trigger and glue will stop, (although a little will still come out) When there is room always place a glue stick behind one already in to help the continuous flow of glue. That's pretty much it really.

Is the light on? The problem may be electrical, you can try plugging it into a different outlet. Try one that you are sure is working (ie unplug something that is already working and try the glue gun there). If it is getting power, there must be a problem with the interior heating coil, in which case you will have to unscrew the casing and replace some parts

im not sure what model rubbermaid glue gun you have, for most there is a hole in the back and you just slide the glue stick in

i would let the glue set for at least a few hours before inserting the screw. use an industrial strength (contractors) glue stick

with some glue guns the sitting with a stick in them wile hot the stick will get hot enough to where the gripper that advances the glue slips try to bush it through some to where you can add a new stick in or when sitting for longer periods unplug to allow to cool then re heat when needed.
hope this helps

No need for concern. Just leave it there and then the next time you use it push a new one in as needed.
I haven't met a glue gun yet where you can take out the last remnants of glue stick.
If you prefer to remove it try this:
take a paper clip and straighten it (any thin,metal object will work) Heat the glue gun,unplug it,and then heat the end of the paper clip with a lighter/candle.
Insert it into the end that you load from,sticking it into the glue stick. Wait a short time and then pull the paper clip out. The glue stick should come out with it.
I find it easier to leave the glue stick in as I said,but it's your choice.

Gather the materials needed and place them on a flat surface near an electrical outlet. Examine the glue gun. Locate the metal rest. This is usually attached to the barrel of the gun and is shaped like a "W." Make sure it folds out and locks into place. Locate the trigger. This is just behind the barrel on the underneath side of the gun. It should be a solid piece of plastic shaped like a slice of pie. Just above the trigger, is the barrel loader. This is where the glue sticks go into the gun. Inside the barrel loader there is a smaller round piece of plastic. This is what actually pushes the glue stick through the barrel. Pull the trigger and watch the piece of plastic move with it. Pick up the electrical cord and examine it. Make sure the prongs are secure and not bent. Make sure the cord has no breaks in the outer lining and there are no frays at the base of the gun where the cord attaches. Plug the glue gun into the electrical outlet. Allow the gun to heat at least 15 minutes so it reaches operating temperature. When the gun has heated at least 15 minutes, insert a glue stick as far as it will go without forcing it. Now pull the trigger until a small drop of hot glue forms on the tip of the gun. Practice gluing on the paper plate. Pull the trigger until a ball of glue forms on the plate. Release the trigger and quickly press the tip of the gun down onto the surface of the plate and pull it to the side. This will break the glue and stop it from stringing out when you pull it away. Continue practicing until you get the right amount of glue you want for the object you imagine using. When you pull the gun away, there may be a small string but this will break off easily. When you have the perfect amount of glue and only a tiny string forming when you pull away, you are ready for your project.

Plug the glue gun into an electrical outlet. Make sure it is placed in a secure place, away from flammable items. As the glue gun heats up, a little bit of glue might drip from the end so you won’t want to leave it on a wood table or on carpet. Insert a glue stick into the back of the glue gun. If the glue gun already has a glue stick in the chamber, keep a second one in reserve nearby. Gather the materials you want to glue together. Hot glue works exceptionally well on thick fabrics, dried flowers, Styrofoam, wood and plastics. Since it leaves a thicker residue, it is not the best choice for thin papers, fabrics and ceramics. Check to see if the glue in the gun has melted by squeezing the trigger slightly and touching the tip to a test piece of paper. If the glue comes out easily, the glue gun has heated up fully. If the trigger is hard to pull, wait a minute more for the gun to heat more completely. Pick up the glue gun and squeeze the trigger slightly while you draw a thin line on one side of the item to be glued. Immediately place the other object to be glued on the glue line, pressing firmly. Hold the two pieces together for about 15 seconds. Test to see if the item still holds when you remove one hand. Let the item set for a few minutes in order to “cure.” Once the glue has dried fully, use a fingernail to scrape away any of the excess glue.