89-817109A1 Solenoid Relay for Mercury Force | JLM Marine

89-817109A1 Solenoid Relay for Mercury Force | JLM Marine

This high-quality solenoid relay is designed to fit a wide range of Mercury and Force outboard engines from 40 HP to 250 HP, covering 3-cylinder, 4-cylinder, and V6 configurations across 2-stroke, 4-stroke, Optimax, EFI, and DFI models. Engineered as a direct replacement for OEM part numbers 89-817109A1, 89-817109A2, and 89-817109A3, this solenoid ensures reliable starting performance for engines manufactured from 1996 onward.

This aftermarket solenoid replaces multiple OEM and aftermarket part numbers including Sierra 18-5834, Arco SW109, Arrowhead SMR6010, J&N 240-22131, and WAI 67-731, providing broad compatibility across Mercury Marine and Force outboard applications. Built to OEM specifications, it delivers dependable electrical relay function for your engine's starting system.

• Direct replacement for Mercury Marine and Force outboard solenoid assemblies
• Compatible with engines equipped with 5/16-18 starter terminals and rubber mount solenoid configurations
• Suitable for 3-cylinder, 4-cylinder, V6, Jet, Optimax, EFI, DFI, and 4-stroke applications

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 × Solenoid Relay (89-817109A1)

Installation Guide

1. Disconnect the negative battery cable to ensure safe working conditions. Wait a few minutes for any residual charge to dissipate.
2. Locate the existing solenoid relay on your Mercury or Force outboard, typically mounted near the starter motor or on the engine block. Take a photo of the wiring configuration for reference.
3. Carefully disconnect all electrical terminals from the old solenoid, noting which wires connect to which posts. Label wires if necessary to avoid confusion during reassembly.
4. Remove the mounting bolts or screws securing the old solenoid to the engine bracket. Keep hardware if it is in good condition and fits the new unit.
5. Position the new solenoid relay in the same location and orientation as the original. Align mounting holes with the bracket.
6. Secure the new solenoid using the original mounting hardware or new bolts as needed. Tighten evenly but do not over-torque.
7. Reconnect electrical terminals to the corresponding posts on the new solenoid, ensuring tight and corrosion-free connections. Verify that battery and starter cables are on the correct terminals.
8. Double-check all connections against your reference photo to confirm proper wiring. Ensure no bare wires or terminals are exposed.
9. Reconnect the negative battery cable and test engine starting function. Listen for a firm click from the solenoid when the ignition key is turned.
10. If the engine cranks normally, installation is complete. If not, recheck all wiring connections and terminal tightness before further troubleshooting.

Troubleshooting & FAQ

How do I confirm this solenoid fits my Mercury or Force engine?
Cross-reference your engine's model, horsepower, and serial number with the compatibility table above. You can also verify fitment using the Mercury serial number guide and parts diagrams linked in the Compatible Engine Models section.

What are the signs that my solenoid relay is failing?
Common symptoms include a clicking sound when turning the key with no engine cranking, intermittent starting issues, or complete failure to engage the starter motor. Corrosion or burnt terminals on the solenoid are also indicators of failure.

Can I use this solenoid on engines with 5/16-18 starter terminals?
Yes, this solenoid is compatible with Mercury 100 HP and 115 HP 4-cylinder engines equipped with 5/16-18 starter terminals within the specified serial number ranges. Always verify terminal size and mounting configuration before installation.

How often should I inspect or replace the solenoid relay?
Inspect the solenoid and its electrical connections annually or whenever you experience starting issues. Replace the solenoid if you notice corrosion, damaged terminals, or if the relay fails to click when the ignition is engaged.

Will this aftermarket solenoid perform the same as the OEM part?
This is an aftermarket replacement part built to OEM specifications using comparable materials. While it is not an OEM component, it is designed to deliver equivalent performance and reliability for your Mercury or Force outboard.

What is the difference between OEM and aftermarket parts?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.