YAMAHA IGNITION COIL 6E5-85570-10 REC6E5-85570-11

Function and technical context

The ignition coil is the fundamental component of the ignition system that generates the high voltage necessary to produce the spark at the engine spark plugs. In four-cylinder Yamaha engines, this part works in precise synchronization with the distributor and ignition circuit to ensure controlled combustion of the petrol-air mixture in each cylinder. 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, irregular operation and, in advanced cases, complete stoppage of the engine.

When to replace this part?

Symptoms of coil aging include misfiring under load, progressive loss of acceleration, unstable idle, and difficulty starting cold, especially after prolonged periods of inactivity. In marine navigation, where humidity and salinity accelerate the corrosion of electrical components, it is recommended to check the condition of the coil at least once a year during seasonal maintenance and replace it preventively every 5-7 years of regular use or at the first symptoms of malfunction. Changing the coil preventively avoids running out of power in the water and reduces the risk of breakdown at sea.

Equivalent manufacturer part numbers