Yamaha 73A-81811-00-00 – Brush 1

Yamaha 73A-81811-00-00 – Brush 1

Maintain smooth electrical contact in your Yamaha outboard’s starter motor or alternator with the Yamaha 73A-81811-00-00 – Brush 1. This OEM replacement brush is designed to provide consistent conductivity and wear resistance, helping ensure reliable starts and steady power output. If you're experiencing electrical hiccups, this small but essential component could be the fix.

Key Features

Genuine Yamaha OEM Part – Built to meet exact Yamaha electrical specs

Reliable Electrical Contact – Ensures stable current flow in key systems

Long-Wearing Carbon Material – Engineered for durability under repeated use

Essential for Starter and Alternator Function – Keeps your motor powered and dependable

Ideal Use Cases

Replace this brush during electrical service, especially when addressing issues like weak starts, inconsistent charging, or worn motor brushes. It’s also commonly installed during routine maintenance of the starter or alternator to preserve system performance and prevent future failures.

Why Electrical Brushes Matter

Worn brushes can interrupt power delivery, cause sparking, or reduce the efficiency of starter and alternator components. The Yamaha 73A-81811-00-00 – Brush 1 helps maintain steady electrical flow and extends the lifespan of your marine electrical systems—making it a key part of long-term reliability.

Frequently Asked Questions

What does the Yamaha 73A-81811-00-00 – Brush 1 do?

It conducts electricity between stationary wires and moving parts in systems like the starter motor, helping your outboard start and charge efficiently.

How can I tell if my starter brush is worn out?

Look for symptoms such as slow or failed starts, sparking, or visible wear on the brush. Electrical testing may also reveal a loss of continuity.

Should I replace both brushes at once?

Yes, it’s typically recommended to replace both brushes together to ensure balanced performance and even wear in the system.