my 1985 satoh 35hp approx stallion won't start. the battery is strong, glow plugs heat up, all dash and headlights are very bright, but when you turn the key nothing happens. when you put the shifter in the start position is it a mechanical switch or an electric switch? is it possible the shifter switch is the problem. or should i look for a problem in the ignition key switch? don't know where to start the diagnosis. any ideas? thanks for your help. rich w.