What is the reason for the motorcycle throttle tachometer not working?

[SanJourney]

Motorcycle tachometer not working is due to a faulty speed sensor. Below is relevant information about the tachometer: 1. Purpose: The tachometer is one of the essential instruments in the mechanical industry, used to measure the speed, linear velocity, or frequency of motors. It is commonly used in manufacturing industries such as motors, fans, papermaking, plastics, chemical fibers, washing machines, automobiles, aircraft, and ships. Most commonly used are handheld centrifugal tachometers. Speed measurement is indispensable in various sectors of the national economy. 2. Working Principle: The tachometer receives digital pulse signals, processes them, and directly reads them into the CPU's counting port. The software calculates the speed and the corresponding position of the pointer, then through the CPU's control port, amplifies and drives the stepper motor to rotate in positive or negative directions, indicating the corresponding speed value (the pointer is directly installed on the rotating shaft of the stepper motor). Each step of the stepper motor is only 1/3 degree.