What does the pulsar coil provide for the ignition system?

The pulsar coil is an essential component in the ignition system of many Yamaha engines, as it serves to determine the position of the crankshaft. This information is critical for the ignition timing, allowing the engine control unit to know precisely when to fire the spark plugs for optimal combustion. By generating an AC voltage signal that correlates with the crankshaft's position, the pulsar coil helps ensure the engine runs efficiently and smoothly.

In contrast, voltage regulation is handled by other components within the electrical system, such as the voltage regulator. The fuel mixture ratio is managed by the fuel injection system or carburetors, which adjust the amount of fuel relative to the air entering the engine. Air pressure readings, typically provided by sensors like the manifold absolute pressure (MAP) sensor, are also separate from the function of the pulsar coil. Thus, the function of the pulsar coil is distinctively to signal the crankshaft’s position, making it fundamental to ignition system operation.