How do you make a four wheeler run after it has sat for 5 years?

First check to see if you have fire at the spark plug . You will probably have to remove the gas tank and clean out the old gas and flush with good gas . Remove and cleen carb cleaning the jets is high priority . You will probably have to replace the float valve as they will normally be bad . Check and see if you have compression by holding your finger over the sparkplug hole and turning over the engine . See if it will blow your finger off .If it wont you might need to adjust the valves , to gain compression . Hopefully that will get you going .