Fuel Pump Assembly for Mercury/Mariner 4-stroke 25 HP to 60 HP (826398A1, 826398A3, 826398T3)

Fuel Pump Assembly – Fits Yamaha 4-Stroke 25-60 HP (Replaces 62Y-24410-00-00 through 62Y-24410-04-00)

This fuel pump assembly is designed for a wide range of Yamaha and Mercury/Mariner 4-stroke outboard motors, from 25 HP to 60 HP. It provides a reliable, direct-fit replacement for original equipment manufacturer (OEM) parts, ensuring your engine receives a steady and consistent fuel supply for optimal performance.

This component directly replaces Yamaha part numbers in the 62Y-24410 series and equivalent Mercury and Sierra part numbers. Please verify your specific engine model and original part number to ensure compatibility before purchasing.

• Installation: Engine-mounted mechanical pump
• Fuel Compatibility: Designed for gasoline (87+ octane)
• Durable Construction: Features a die-cast aluminum housing for corrosion resistance

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 Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

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.

Yamaha 4-Stroke Outboards

Mercury/Mariner 4-Stroke Outboards

Technical Specifications

Package Contents

• 1 × Fuel Pump Assembly (replaces 62Y-24410-04-00)
• 1 × Hose Clamp (replaces 90467-10M04-00)
• 1 × O-Ring (replaces 93210-24235-00)
• 2 × Warehouse Number 3030 (unknown purpose)

Explosion Diagram

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Work in a well-ventilated area away from any open flames or sparks.
2. Relieve Fuel Pressure: Safely relieve the pressure from the fuel system according to your engine's service manual.
3. Disconnect Fuel Lines: Place a rag under the fuel pump to catch any residual fuel. Carefully disconnect the inlet and outlet fuel lines from the pump.
4. Remove Old Pump: Unbolt and remove the old fuel pump from the engine block.
5. Clean Mounting Surface: Thoroughly clean the mounting surface on the engine to ensure a proper seal with the new pump.
6. Install New Pump: Position the new fuel pump and gasket (if applicable) and secure it with the mounting bolts. Torque the bolts to the manufacturer's specification.
7. Reconnect Fuel Lines: Securely reattach the inlet and outlet fuel lines to the new pump. Ensure all connections are tight to prevent leaks.
8. Final Check: Reconnect the battery, prime the fuel system if necessary, and start the engine. Carefully inspect the pump and all connections for any signs of fuel leaks.

Troubleshooting & FAQ

Q: How do I confirm this fuel pump fits my specific engine?

A: The best way is to check the part number stamped on your original fuel pump. Compare it with the numbers in our "Part Number Cross-Reference" table. You should also verify your engine's model and year against our "Compatible Engine Models" list. For assistance, use the linked Yamaha and Mercury serial number guides.

Q: What causes a mechanical fuel pump to fail?

A: Common causes of failure include a ruptured diaphragm from age or contaminated fuel, worn internal components, or a leak in the pump housing. Symptoms often include engine hesitation, sputtering, difficulty starting, or a noticeable drop in power.

Q: Is this a genuine Yamaha or Mercury part?

A: This is a high-quality aftermarket part, not an OEM component. It is manufactured to meet or exceed original equipment specifications for fit, form, and function, providing a reliable and cost-effective alternative.

Q: How fast do you ship and how much does it cost?

A: 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.

Q: What is your warranty and return policy?

A: 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.