Abstract: An operation device includes a lever, a holder rotatably supporting the lever, a rotation restriction mechanism restricting a rotation range of the lever to the rotation range including a forward movement operation range, a backward movement operation range, and a neutral position, and a lever holding mechanism holding the lever at the neutral position. The lever includes a base portion rotatable supported by the holder, and an operation portion being movably connected to the base portion with respect to the base portion in an extending direction of the operation portion. The lever holding mechanism holds the lever at the neutral position so as not to be rotatable when the operation portion moves toward one side in the extending direction, and brings the lever into a rotatable state from the neutral position when the operation portion moves toward the other side in the extending direction.

Abstract: A ship propulsion system includes authentication devices that respectively stores different authentication codes. Each of the authentication devices corresponds to one or more ship propulsion devices. Two or more authentication devices among the plurality of authentication devices do not simultaneously correspond to one ship propulsion device. Each of the authentication devices operates as a master authentication device when an authentication code transmitted from a communication device matches an authentication code stored in the authentication devices. The master authentication device recognizes whether a malfunction occurs in the authentication devices; and to select a ship propulsion device disposed in a manner of being bilaterally symmetrical about the center of the ship in the left-right direction from ship propulsion devices corresponding to an authentication device in which no malfunction occurs.

Abstract: An operation device includes a lever, a holder rotatably supporting the lever, a rotation restriction mechanism restricting a rotation range of the lever to the rotation range including a forward movement operation range, a backward movement operation range, and a neutral position, and a lever holding mechanism holding the lever at the neutral position. The lever includes a base portion rotatable supported by the holder, and an operation portion being movably connected to the base portion with respect to the base portion in an extending direction of the operation portion. The lever holding mechanism holds the lever at the neutral position so as not to be rotatable when the operation portion moves toward one side in the extending direction, and brings the lever into a rotatable state from the neutral position when the operation portion moves toward the other side in the extending direction.

Abstract: A ship propulsion system includes authentication devices that respectively stores different authentication codes. Each of the authentication devices corresponds to one or more ship propulsion devices. Two or more authentication devices among the plurality of authentication devices do not simultaneously correspond to one ship propulsion device. Each of the authentication devices operates as a master authentication device when an authentication code transmitted from a communication device matches an authentication code stored in the authentication devices. The master authentication device recognizes whether a malfunction occurs in the authentication devices; and to select a ship propulsion device disposed in a manner of being bilaterally symmetrical about the center of the ship in the left-right direction from ship propulsion devices corresponding to an authentication device in which no malfunction occurs.

Abstract: An outboard motor includes a swivel bracket supporting a drive shaft housing such that the drive shaft housing is pivotable about an axis thereof and is movable in an axial direction thereof, a steering adjuster attached to the swivel bracket and configured to increase or reduce a rotational resistance force of the drive shaft housing against the swivel bracket, and at least one spacer mounted to the drive shaft housing at a position adjacent to at least one of both ends of the swivel bracket in the axial direction. In a state in which the spacer is mounted to the drive shaft housing, the drive shaft housing is restricted from moving in the axial direction with respect to the swivel bracket. A dimension from the swivel bracket to a rotation shaft of the propeller is changed by changing a mounting position of the spacer.

Abstract: A display device for an outboard motor includes a storage device storing unique information of the outboard motor. The display device for the outboard motor has a gauge mode and a service tool mode as display modes. By mounting the display device for the outboard motor to a specific boat, both an operating state of the outboard motor and the unique information of the outboard motor are displayable in the gauge mode. Only the unique information of the outboard motor is displayable in the service tool mode. The display modes are configured to be switched between the gauge mode and the service tool mode.

Abstract: To display a multidimensional code representing unique information of an outboard motor, a display device ensures switchably displaying the multidimensional code representing identical information by a plurality of display patterns where ease of reading is mutually different. A multidimensional code creating unit converts the unique information of the outboard motor into the multidimensional code and creates the multidimensional codes by two patterns. That is, a first multidimensional code creating unit creates a multidimensional code for a display pattern that represents the unique information of the outboard motor by the predetermined count of N (one or plural) multidimensional codes.

Abstract: To display a multidimensional code representing unique information of an outboard motor, a display device ensures switchably displaying the multidimensional code representing identical information by a plurality of display patterns where ease of reading is mutually different. A multidimensional code creating unit converts the unique information of the outboard motor into the multidimensional code and creates the multidimensional codes by two patterns. That is, a first multidimensional code creating unit creates a multidimensional code for a display pattern that represents the unique information of the outboard motor by the predetermined count of N (one or plural) multidimensional codes.

Abstract: A display device for an outboard motor includes a storage device storing unique information of the outboard motor. The display device for the outboard motor has a gauge mode and a service tool mode as display modes. By mounting the display device for the outboard motor to a specific boat, both an operating state of the outboard motor and the unique information of the outboard motor are displayable in the gauge mode. Only the unique information of the outboard motor is displayable in the service tool mode. The display modes are configured to be switched between the gauge mode and the service tool mode.

Abstract: A switch device includes an ENT switch for allowing a keyless controller to perform an authentication process, a S/S switch for manipulating start and stop of an engine, and a single common manipulating member for allowing a user to manipulate ON/OFF switching operations of the ENT switch and the S/S switch. The ENT switch and the S/S switch are switched between ON and OFF depending on a motion of the single common manipulating member.

Abstract: There is provided an identification number setting apparatus of a plurality of outboard motors attached to a ship body. A plurality of engine control modules are provided in the plurality of outboard motors. A keyless controller is configured to perform an authentication process for keyless control between the keyless controller and the plurality of engine control modules. During initial registration of authentication information for the authentication process, the keyless controller sets identification numbers in the plurality of engine control modules.

Abstract: A switch device includes an ENT switch for allowing a keyless controller to perform an authentication process, a S/S switch for manipulating start and stop of an engine, and a single common manipulating member for allowing a user to manipulate ON/OFF switching operations of the ENT switch and the S/S switch. The ENT switch and the S/S switch are switched between ON and OFF depending on a motion of the single common manipulating member.

Abstract: There is provided a keyless entry control system for a plurality of outboard motors attached to a body of a ship. A plurality of engine control modules are provided in the plurality of outboard motors. A detector is connected to all of the plurality of engine control modules. In response to a detection result of the detector, use permission authentication on the plurality of engine control modules is performed.

Abstract: There is provided a keyless entry control system for a plurality of outboard motors attached to a body of a ship. A plurality of engine control modules are provided in the plurality of outboard motors. A detector is connected to all of the plurality of engine control modules. In response to a detection result of the detector, use permission authentication on the plurality of engine control modules is performed.

Abstract: There is provided an identification number setting apparatus of a plurality of outboard motors attached to a ship body. A plurality of engine control modules are provided in the plurality of outboard motors. A keyless controller is configured to perform an authentication process for keyless control between the keyless controller and the plurality of engine control modules. During initial registration of authentication information for the authentication process, the keyless controller sets identification numbers in the plurality of engine control modules.

Abstract: A method and apparatus for separating and analyzing using liquid chromatography, wherein an eluate from a chromatographic column is treated by dialysis using an amphoteric ion exchange membrane.

Abstract: An ignition apparatus has an electrically controlled spark advance mechanism.