646-81326-20 – Condenser – Yamaha

The 646-81326-20 Yamaha condenser is an OEM ignition condenser used on older Yamaha outboard motors. This condenser acts as a capacitor in the ignition system. It stores and releases electrical energy to help spark timing remain smooth and consistent. By reducing electrical arcing and stabilizing the coil discharge, it supports healthy engine starts and steady idle behavior on two-stroke outboards.

A condenser plays a key role in the ignition circuit by preventing excessive wear on points or electronic switching parts. When the ignition condenser weakens, engines can misfire, run irregularly, or become difficult to start. The 646-81326-20 Yamaha condenser helps maintain correct spark timing under load and at various RPMs so the combustion process remains efficient. Because this condenser matches the original Yamaha specification, it fits correctly and works reliably with your ignition coil and contact points.

To install, first disconnect the battery and wiring harness. Then remove the old condenser from its mount. Next, secure the new 646-81326-20 Yamaha condenser in the same bracket and reconnect the wiring. Ensure all connections are tight and corrosion-free. Finally, test start the engine to verify smooth ignition and steady idle behavior.

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