6BX-W006A-00 Maintenance Kit for Yamaha F4 F4LMHA F4SMHA F6 F6LMHA F6SMHA F4B F5A F6C | JLM Marine

Maintenance Kit for Yamaha F4 F4LMHA F4SMHA F6 F6LMHA F6SMHA F4B F5A F6C

This comprehensive maintenance kit is designed for Yamaha 4HP and 6HP four-stroke outboard engines, including F4, F4LMHA, F4SMHA, F6, F6LMHA, F6SMHA models (2009 and up), as well as international models F4B, F5A, and F6C (2010 and up). It provides all essential components for routine service, ensuring your engine runs efficiently and reliably.

This kit directly replaces Yamaha OEM part number 6BX-W006A-00, delivering a complete solution for water pump service, fuel system maintenance, cooling system components, and corrosion protection in one package.

• Complete Service Package: Includes impeller, water pump housing, fuel filter, thermostat, anode, gear oil pump, and all necessary gaskets and hardware
• Water Pump Overhaul: Features full water pump assembly components including housing, impeller, wear plate, gaskets, and damper
• Cooling & Fuel System: Provides thermostat and fuel filter for comprehensive engine maintenance

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.

Technical Specifications

Package Contents

This maintenance kit includes 14 components with all necessary parts for complete engine service:

• 6E0-44352-00 - Impeller × 1
• 6EE-G4311-00 - Housing, Water Pump × 1
• 6EE-G4315-00 - Gasket × 1
• 6EE-G4322-00 - Cup, Insert × 1
• 6EE-G4323-00 - Plate, Wear × 1
• 6EE-G4366-01 - Damper, Water Seal × 1
• 93604-18080 - Pin, Dowel × 2
• 97D95-06045 - Bolt × 4
• 68T-24251-00 - Fuel Filter × 1
• 66M-12411-01 - Thermostat × 1
• 68D-E2414-A0 - Gasket × 1
• 90430-08020 - Drain Gasket × 4
• 6L5-45251-02 - Anode × 1
• 24OP149 - Gear Oil Pump × 1

Installation Guide

1. Preparation: Ensure the engine is off and cool. Gather necessary tools including screwdrivers, socket wrenches, and a clean workspace.
2. Remove Lower Unit: Drain the lower unit gear oil and disconnect the shift linkage. Remove the mounting bolts and carefully separate the lower unit from the engine.
3. Access Water Pump: Locate the water pump housing on the lower unit. Remove the bolts securing the pump housing using the appropriate socket.
4. Remove Old Components: Carefully extract the old impeller, wear plate, insert cup, and water seal damper. Inspect the pump housing for damage or excessive wear.
5. Clean Surfaces: Thoroughly clean all mating surfaces, removing old gasket material and debris. Ensure the impeller chamber is free of sand or corrosion.
6. Install New Components: Place the new gasket on the pump housing. Install the insert cup, new impeller (lubricate with glycerin or soapy water), wear plate, and water seal damper in order.
7. Install Dowel Pins: Insert the two dowel pins into their respective holes to ensure proper alignment during reassembly.
8. Reassemble Water Pump: Position the pump housing and secure it with the four new bolts. Tighten in a cross pattern to the manufacturer's torque specifications.
9. Replace Fuel Filter: Locate the fuel filter in the engine compartment. Disconnect fuel lines carefully and replace with the new filter, ensuring proper flow direction.
10. Install Thermostat: Remove the thermostat cover, replace the old thermostat and gasket with new components, and reinstall the cover securely.
11. Replace Anode and Gaskets: Install the new anode to prevent corrosion. Replace all four drain gaskets to ensure proper sealing.
12. Final Assembly: Reattach the lower unit to the engine, reconnect the shift linkage, and refill the lower unit with fresh gear oil using the provided pump. Test run the engine and check for proper water flow from the telltale indicator.

Troubleshooting & FAQ

Q: How do I know if my water pump needs replacement?
A: Signs include weak or no water stream from the telltale indicator, engine overheating, reduced cooling system performance, or visible damage to the impeller during inspection. Yamaha recommends replacing the water pump impeller every 2-3 years or 200-300 hours of operation.

Q: Can I install this kit myself or do I need a professional?
A: If you have basic mechanical skills and the proper tools, you can install this kit following the instructions. However, if you're unfamiliar with outboard maintenance or uncomfortable working with cooling and fuel systems, professional installation is recommended for safety and optimal performance.

Q: How often should I perform this maintenance service?
A: For optimal engine performance, perform this comprehensive maintenance annually or every 100-200 operating hours, whichever comes first. The fuel filter and impeller should be inspected more frequently if operating in sandy or debris-laden water.

Q: Will this kit fit international models like F4B, F5A, and F6C?
A: Yes, this maintenance kit is specifically designed to fit both standard Yamaha models (F4, F6 series from 2009-up) and international variants (F4B, F5A, F6C from 2010-up). Always verify your engine model and year against the compatibility table.

Q: What's the difference between OEM and this aftermarket kit?
A: 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.

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.