We were on the water fishing (engine worked fine on the way out) and when we decided to head in, I pulled the chock knob out to choke it and the whole knob came out completely in my hand! The end of it had a grooved head that seemed like it would screw back onto/into something but I couldn't get the piece to go back in and the motor wouldn't start, didn't even seem to fire at all. I have a SELOC manual but frankly it doesn't show squat for installing/replacing this knob. Any help greatly appreciated!!