YAMAHA SPRING 90467-13M13

Function and technical context

This spring is part of the engine's ignition system, working on the distribution of the spark in the cylinders. Its function is to maintain the necessary voltage in the ignition circuit, ensuring that the current correctly reaches the spark plugs at the right time. A defective or weakened spring compromises ignition stability, which can cause misfires, loss of engine power and irregular fuel consumption. On Yamaha engines, this part is critical to ensuring smooth and efficient operation, especially under sustained load or acceleration conditions.

When to replace this part?

After thousands of ignition cycles, the springs lose elasticity and responsiveness, manifesting themselves with difficulties when starting, jerks in acceleration or irregular operation at idle. It is advisable to check the condition of this component during each seasonal maintenance, especially after prolonged winters or if the engine has been stopped. A preventive replacement prevents unexpected navigation breakdowns and ensures that the ignition maintains its precision throughout the entire season of use.

Equivalent manufacturer part numbers