I recently bought 1987 cavalier and I am unfamiliar with the throttle box. It is a hi lex model with trim and tilt botton on the arm. I am wondering how you put it in mode to pump and prime carb as well as keep it in neutral and be able to rev engine. There looks like there is a square box right in center of arm almost like you have to push that for something. I currently have it locked in hear and I can't turn over. There is alot of resistance to the throttle and I don't want to just try and muscle if forward or back and break something. Please help .
