RE: no pressure nipple on muffler
It is a enya 60X probably very old. I purchased it probably 20-25 years ago. I think it had less than a tank of gas. Lost the muffler someplace. It does not have a pump. I don't know what carb it has on it. Other than it says enya and has a adjustment on the top right (looking down at the carb) that has a slide control marked off in increments. Negative towards the back and positive towards the prop.