The throttle on my Johnson 50hp won't work from the control box. It works in reverse, but not forward.<br /><br />I can work the throttle manually, and the engine runs great.<br /><br />I think the cable is stuck, but it works in reverse. Is reverse control by an electric motor or something?<br /><br />Can someone give me the correct part number? The model number is 50ESL71S.<br /><br />If I can't get a throttle cable before this weekend, is there any danger running the boat throttle manually?<br /><br />Thanks for any help.