YAMAHA IGNITION COIL 6F5-85570-13

Function and technical context

The ignition coil is the essential component of the ignition system that transforms the low voltage current from the battery into high voltage, necessary to generate the spark on the spark plugs. On Yamaha outboard engines, it works in direct coordination with the electronic control module to ensure precise ignition with each combustion cycle. Its correct operation is critical to maintain engine power, idle stability and fuel consumption within normal parameters; A failure in the coil causes loss of power, difficulty starting and irregular engine operation.

When to replace this part?

The most common symptoms of deterioration include difficulty starting, misfiring during acceleration, unstable idle and noticeable loss of revolutions under load. Although there is no set maintenance interval, it is advisable to check the condition of the coil each boating season, especially if the engine has been idle or exposed to wet conditions. Replacing the coil preventively when the first symptoms are detected avoids unexpected stays in the water and more expensive repairs in the future.

Equivalent manufacturer part numbers