Starter Relay – Fits Yamaha 25HP & 30–40HP (1998+), Mercury/Mariner 75–225HP (1988–1998) & Force 90/140HP (1995–1997)

Product Details

This Starter Relay is an aftermarket replacement relay for selected Yamaha, Mercury/Mariner, and Force outboard applications. It is listed for Yamaha 25HP and 30–40HP outboards from 1998 and later; Mercury/Mariner outboards with 3-cylinder 75–90HP, 4-cylinder 90–120HP, and V6 150–225HP engines from 1988–1998; and Force 3-cylinder 90HP and 4-cylinder 140HP outboards from 1995–1997.

Confirm the engine brand, cylinder configuration, horsepower, year range, and the number on your original relay before ordering. The reference numbers below are provided for identification and application matching.

• Starter relay replacement for selected marine outboard electrical systems
• Applications covering specified Yamaha, Mercury/Mariner, and Force outboards
• Aftermarket replacement for the listed OEM and cross-reference numbers
• Sold as one individual relay; no additional hardware or wiring is included

Part Number Matrix

Use these OEM and aftermarket references to compare with the relay currently installed on your engine.

Engine & Model Compatibility

Fitment is based on the application ranges listed for this relay. Keep the engine brand, cylinder configuration, horsepower, and year together when checking compatibility.

Technical Information

Product type

Starter relay

Part format

Individual aftermarket replacement component

Included quantity

One relay

What's in the Box

• 1 × Starter Relay

Installation Notes

1. Turn off the engine and disconnect the negative battery cable before beginning work.
2. Locate the existing starter relay and photograph or label each wire before removal.
3. Check the replacement relay against the original for matching terminal arrangement, mounting style, and connector orientation.
4. Remove the electrical connections from the old relay and remove it from its mount.
5. Install the replacement relay in the same position and reconnect each wire to the corresponding terminal.
6. Make sure all connections are clean, tight, and protected from moisture or corrosion.
7. Reconnect the negative battery cable and test the starting system before returning the outboard to service.

Troubleshooting & FAQ

What symptoms can indicate a failed starter relay?

Possible symptoms include a clicking sound without starter engagement, intermittent cranking, or no response when the starting switch is activated. Inspect the battery, cables, grounds, wiring, and starter motor as well, because these components can produce similar symptoms.

Will this relay fit every Yamaha, Mercury, Mariner, or Force outboard?

No. This relay is intended only for the application ranges listed above. Verify the brand, cylinder configuration, horsepower, model year, original relay number, and terminal arrangement before ordering.

Is this an OEM relay?

No. This is an aftermarket replacement relay intended to correspond with the listed OEM and aftermarket reference numbers.

Can I install the relay myself?

Installation may be suitable for someone familiar with marine electrical work. Always disconnect the battery before servicing the relay and follow the engine manufacturer's service procedures. Professional installation is recommended if the wiring or terminal identification is unclear.

How can I help prevent relay problems?

Inspect the relay and its connections periodically for looseness, corrosion, water intrusion, or heat damage. Keep battery terminals and cable connections clean and tight, and correct any charging or starting-system problem that could overload the relay.

Safety & Important Info

• Confirm the engine brand, cylinder configuration, horsepower, year, original part number, and terminal arrangement before purchase.
• Do not rely on horsepower alone to determine fitment.
• Disconnect the battery before installation or electrical testing.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended when the original wiring or application cannot be positively identified.