My brother just replaced the plugs, wires, rebuilt the Carbs and fuel pump because the motor would not keep it's prime and would die at idle and low speed. This did not fix the problem completely. I found a couple of air leakes around the fuel pump and fixed them myself. Now the motor will idle fine, appears to be keeping it's prime good enough and runs great at full speed. However, it still dies at low speeds just past idle. I got to looking at the spark adv and throttle screws and noticed they don't touch anything in nuetral or when the throttle is all the way open. Come to find out my dad tinkered with these screws (backing them out) at the poor advice of a local mechanic in an attempt to fix the previous problems. My question is how do I set the spark advance and throttle screws appropriately? I suspect the spark advance is causing the motor to die at low speeds, and fear not having it set correct could damage the engine. I have a repair manual but it only refers to the idle adjustment screw. I can't find any information on the Spark Advance or Throttle screws. Any information would be appreciated. Thank you!
Aaron
Aaron
