The TNT switch located on the throttle lever works only in the "down" position and will not answer to the "up" position. I strongly suspect that I have a dirty switch or compromised wiring in the throttle lever. The TNT works fine both directions from two other posts in the boat. I am asking for assistance in locating an electrical schematic and or a mechanical diagram that will help in taking the throttle lever apart to see what the problem is. Thank you!! Terry
