". I was playing around with a screw where the bar meet the chainsaw"
That screw adjusts the tension on the chain most likely.
"People said it would seize up."
It will, keep running it with straight gas and you will be out your $145 CD and not have to worry about the oiler working properly. It's important to use a good two cycle oil mixed at probably a 40:1 ratio for your saw.
Most oilers are run by a pump in the bar oil tank. Yours may be shot or plugged.
Before I go any further I will welcome you to Arboristsite. It's always great to have new members, inexperienced or well seasoned.
Having said that, I have read your first 6 posts. You are either pulling our legs or if you questions are genuine you are in very real danger of damaging your equipment, yourself or your neighbors house. This is not meant to belittle but as a friendly warning. Nobody here likes to see anybody get hurt or killed.(even if we disagree with their politics ) Chainsaws are great tools and can be a lot of fun but are extremely dangerous.