V boost not working

[Vfast]

I have a 1988 Yamaha VMAX my v boost quit working when i turn the key on servo motor does not cycle is the servo motor bad ?

 

[dannymax]

I have a 1988 Yamaha VMAX my v boost quit working when i turn the key on servo motor does not cycle is the servo motor bad ?

Chances are it's the controller box under the left scoop.....twist it a little back & forth and see if the boost starts working.