The starting circuit Yamaha XS650 consists of the starter motor, starter relay, starter cut-out relay, and the starting-circuit cut-off relay. If the engine stop switch and the main switch are both on, the starter motor can operates only if: The transmission is in neutral (the neutral switch is on); Or if the clutch lever is pulled to the handle-bar (the clutch switch is on) and the sidestand is up (the sidestand is on). The following schematic illustrates the Yamaha XS650 and . (click image to enlarge)

yamaha xs650 starting system circuit wiring diagram

The starting circuit cut-off relay prevents the starter from operating when neither of these conditions has been met. In this instance, the starting circuit cut-off relay is off so current can not reach the starter motor. When on or both the above conditions have been met, however, the starting-circuit cut-off relay is on, and the engine can be started by pressing the starter switch.

The starting system also has a starter cut-out relay which protects the starter motor during engine operation. After the engine has started, the tachometer control unit sends current to the starter cut-out relay. The relay switches off, interrupts the current flow to the starter motor, and the starter ceases to operate.



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