I have a mercury 850 4cyl, 196x model. I put it in the water the first time yesterday. It is in forward when it cranks (thinks it is on neutral).<br />that me be a cable adjustment.<br /><br />I have to crank it at full high idle and it will only run at full ahead. slow either down and the motor dies.<br /><br />I have replaced the plugs, changed frayed wires, changed foot oil, impeller.<br /><br />What next carbs?