I have a 1975 75 horse Christler outboard that has trouble staying in neutral. When running forward or reverse there is no problems at all but when I shift into neutral it will run ok for a few seconds and then shift into gear and die. I have to ove the throddle back and forth and get it back in neutal before I can start it again. Also sometimes I cant get it to start in high idol. I dont know if there is a neutral switch in the motor somewheres or anything. I know NOTHING about marine engines. Any help would be appreciated. Thanks.