Ignition Key Switch Panel – Fits Yamaha Outboard 2-stroke 4-stroke (Replaces 704-82570-08-00, 704-82570-12-00, 704-82570-01-00)

Product Details

This Ignition Key Switch Panel is an aftermarket replacement designed for Yamaha 2-stroke and 4-stroke mechanical shift outboard motors equipped with a 10-pin wiring harness. Engineered to match OEM specifications, it provides reliable engine start and stop control for single-engine outboard applications.

This switch assembly directly replaces Yamaha OEM part numbers 704-82570-12-00, 704-82570-08-00, and 704-82570-01-00.

• Simple plug-and-play installation with no wire splicing required
• Constructed from durable metal and plastic materials for long-term reliability
• Includes lanyard with emergency stop function for operator safety

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Condition

100% Brand New

Material

Metal + Plastic

Color

Black + Red

Panel Size

116mm × 70mm (4.57" × 2.8")

Lanyard Length (Extended)

Approx. 135cm (53.2")

Package Weight

Approx. 370g

Engine Position

Outboard

Wiring Harness

10-pin connector

Engine Type Compatibility

2-stroke and 4-stroke mechanical shift

What's in the Box

• 1× Key Switch Panel
• 1× Lanyard
• 2× Keys
• 4× Mounting Screws

Installation Notes

1. Disconnect the battery and ensure the engine is completely off before beginning installation.
2. Remove the existing ignition switch panel by unscrewing the mounting hardware and carefully disconnecting the 10-pin wiring harness.
3. Align the new switch panel in the mounting location and verify that the 10-pin connector is accessible.
4. Plug the 10-pin connector from the engine harness into the back of the new switch panel until it clicks securely into place.
5. Use the four included mounting screws to secure the panel to the mounting surface, ensuring a snug fit.
6. Attach the lanyard to the kill switch clip on the panel and test the emergency stop function by gently pulling the lanyard.
7. Reconnect the battery and insert the key to test the ignition function in all positions (Off, On, Start).
8. Confirm that the engine starts smoothly and the emergency stop lanyard activates the kill switch when pulled.

Troubleshooting & FAQ

How do I know if my outboard has a 10-pin wiring harness?

Check the connector on your existing ignition switch or consult your engine's service manual. Yamaha mechanical shift outboards typically use a 10-pin connector for the key switch. If you're uncertain, contact us with your engine model and serial number for confirmation.

Will this work on remote control boxes?

Yes, this switch panel is designed for installation on remote control boxes or dash-mounted applications for single-engine Yamaha outboards with mechanical shift and a 10-pin harness.

The key turns but the engine won't start—what should I check?

First, ensure the 10-pin connector is fully seated and locked. Verify that the lanyard is attached and the kill switch is not activated. Check battery connections and fuses. If the problem persists, inspect the wiring harness for corrosion or damage.

Can I use this on a 2-stroke and a 4-stroke motor?

Yes, this switch panel is compatible with both Yamaha 2-stroke and 4-stroke mechanical shift outboard motors equipped with the appropriate 10-pin wiring harness.

What is the difference between the three OEM part numbers listed?

704-82570-12-00, 704-82570-08-00, and 704-82570-01-00 are superseded equivalents used across different production years. All are functionally identical and interchange with each other.

How often should the ignition switch be replaced?

Ignition switches typically last many years under normal use. Replace if you experience intermittent starting, difficulty turning the key, corrosion inside the switch housing, or failure to engage the starter or kill switch.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.