1999 yamaha 1200xl buzzing noise from servo motor assembly killing battery

yamaha1200xl

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I dont even know what this part does but there is an electronic servo motor (part number 66v-85820-00-00) which has two cables (similar to throttle cables) connected to it which travel to a shaft on the side of the cylinder crankcase. Anyways this servo motor is always powered and is buzzing causing my battery to die when not running. Can someone tell me what is the purpose of this motor and possibly a fix. I do not have electrical schematics does anyone know where I could download some. Thanks for any help
 

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