CDI YAMAHA REC6F6-85540-01

Function and technical context

The CDI (Capacitor Discharge Ignition) is the module responsible for generating and controlling the ignition system in Yamaha two-stroke engines. This component stores electrical energy and discharges it precisely to the spark plug, ensuring a powerful spark synchronized with the engine cycle. Its correct operation is essential to ensure efficient combustion, reliable starting and optimal engine performance in all navigation conditions. A faulty CDI causes misfires, loss of power, starting difficulties and excessive fuel consumption.

When to replace this part?

The CDI should be inspected if you experience intermittent misfires, difficulty starting the engine even with a good battery, unexplained loss of revs under load, or involuntary shutdowns while cruising. Although there is no fixed replacement interval as with filters or anodes, marine corrosion, extreme thermal cycles and exposure to humidity gradually degrade the module; Therefore, it is advisable to check its condition at each seasonal inspection and replace it preventively after 8-10 years of intense use. Changing the CDI early prevents unexpected strandings in the water and costly emergency repairs.

Engine Compatibility

Equivalent manufacturer part numbers