My fishing/ hunting partner has an 80's 115 yammer, it starts every time the first time it is started, after fishing for a while,when he tries to start it, it won't hit a lick,(not every time) when this happens he can remove the motor cover ,disconnect the white wire at the engine terminal strip and it will start every time with out fail. he has spent a lot of money and this still happens. I sure hope some ha an idea what to look foe. thanks many times in advance