mercury outboard tachometer installation

• 2023-08-02

There are only four wires for the installation of the Tachometer on the mercury board: the yellow signal wire is connected to the igniter; Red power positive pole ; Black connected to the negative pole of the power supply ; Blue connected to headlights or small lights, the brightness of the display decreases when turned on at night ; To set the frequency division value , it is to calculate the number of crankshaft rotations based on the number of ignition cycles. The manual says that a three cylinder vehicle needs to be set to 3/2 , but the new Alto needs to be set to 1 to display it correctly.

The Mercury outboard engine speed sensor is generally installed on the blade flywheel . The Mercury outboard speed sensor on the engine is a Hall sensor, which operates on the signal teeth on the flywheel and converts magnetic signals into electrical signals through semiconductor components. This type of sensor can work without touching the measured object . The Mercury outboard speed sensor on the gearbox can directly convert mechanical signals into electrical signals. The sensor meshes with the main reduction gear of the gearbox through the gear , and the main reduction gear rotates to drive the sensor gear to rotate , thereby outputting a speed signal.

The instantaneous Mercury outboard engine speed is relatively high during startup, usually reaching 1200-1500/min, and may even be higher during cold weather. This is the case for all electric fuel injection vehicles , as the temperature is low and the on-board computer will command more fuel . Firstly , it is to ensure that the engine runs above idle speed to prevent stalling due to low speed , and also to heat up the vehicle as soon as possible to reach operating temperature. When the engine condition stabilizes slightly , the speed will decrease to around 800r/min.

The maximum speed of the Mercury outboard engine at full throttle is 4500-5500 rpm, and it can travel up to 50 kilometers per hour at the maximum speed . Therefore , the Mercury outboard engine can run 50 kilometers per hour. Outboard engine, as the name suggests , refers to a propulsion engine installed on the outer side of the ship's hull (hull), suspended on the outer side of the stern plate, also known as an outboard engine.