1985 90HP stalling problem

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the motor runs great up to 1,500 RPM and jumps a 3/8 spark on all (3) cylinders, carbs been cleaned with the same problem, engine will run for hours so I think the fuel pump is good, what else can cause this may be a bad switch box,or trigger Thanks Bob

 

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Re: 1985 90HP stalling problem

It was in protection mode with out the system gauges and horns hooked up I disconected the pink wire and now the engine runs perfect without the warnning lights hooked up Thanks Bob