YAMAHA IGNITION COIL 63V-85533-00

Function and technical context

The ignition coil is the component responsible for generating the high voltage necessary to produce the spark at the outboard motor's spark plugs. Integrated into the ignition system, it transforms the low voltage current coming from the magneto into high voltage pulses that ignite the air-fuel mixture in the cylinders. Its correct operation is essential to maintain accurate ignition, ensure idle stability and ensure that the engine develops power evenly under all sailing conditions.

When to replace this part?

The most obvious symptoms of ignition coil failure include difficulty starting, intermittent misfires, noticeable loss of power, irregular revs or spontaneous blackouts while cruising. It is recommended that the coil be inspected during each seasonal maintenance, paying attention to possible damage from marine corrosion, cracks in the insulation, or loose connections. Replacing the coil preventively when these symptoms are detected avoids running out of propulsion in navigation conditions and extends the useful life of the spark plugs and other ignition components.

Engine Compatibility

Equivalent manufacturer part numbers