5/16 IN 6.5 FT Fuel Line with Primer Bulb – Fits Yamaha Outboard Motors 4-350 HP (Replaces 6Y1-24306-55)

5/16 IN 6.5 FT Fuel Line with Primer Bulb – Fits Yamaha Outboard Motors 4-350 HP (Replaces 6Y1-24306-55)

This fuel line assembly is designed for a wide range of Yamaha outboard engines from 4 HP to 350 HP, including both 2-stroke and 4-stroke models. It serves as a direct replacement for Yamaha outboards requiring a 5/16" (8mm) fuel line connection.

This part is a direct replacement for Yamaha OEM part number 6Y1-24306-55 and JLM Marine part number 5/16-IN-6.5FT-FL. It ensures reliable fuel delivery from the tank to the engine.

• Complete Assembly: Includes a 6.5 ft fuel line, primer bulb, and pre-installed snap-on connectors.
• Fuel Compatibility: Designed for use with gasoline and modern ethanol-blended fuels.
• Installation Method: Portable quick-connect design for easy attachment between the fuel tank and engine.

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

• 1 x Fuel Line Assembly with Primer Bulb (Replaces Yamaha 6Y1-24306-55)
• 2 x Snap-on Connectors (pre-installed)

Installation Guide

1. Safety First: Work in a well-ventilated area away from open flames, sparks, or heat sources. Ensure the engine is off and cool.
2. Disconnect Battery: Disconnect the battery as a safety precaution.
3. Locate Old Fuel Line: Identify and access the existing fuel line connections at the engine and the fuel tank.
4. Remove Old Line: Carefully disconnect the old fuel line from both the engine and the tank. Have a rag ready to catch any minor fuel spillage.
5. Orient New Line: Take the new fuel line assembly and note the directional arrow on the primer bulb. This arrow must point in the direction of fuel flow (from the tank to the engine).
6. Connect to Tank: Attach the appropriate snap-on connector to the fuel tank outlet. Ensure it clicks into place securely.
7. Connect to Engine: Attach the other end of the fuel line to the engine's fuel inlet port. Ensure a secure, snug fit.
8. Prime the System: Squeeze the primer bulb repeatedly until it feels firm. This fills the fuel line and carburetor with fuel.
9. Inspect for Leaks: Visually inspect all connection points for any signs of fuel leakage. If you see or smell gas, do not attempt to start the engine. Rectify the leak first.
10. Test Engine: Reconnect the battery, start the engine, and let it run for a few minutes while continuing to check for any leaks.

Troubleshooting & FAQ

Q: How do I confirm this fuel line fits my engine?
A: This fuel line assembly is designed for most Yamaha outboards from 4 HP to 350 HP (both 2-stroke and 4-stroke models) that require a 5/16" (8mm) fuel connection. It is a direct aftermarket replacement for OEM part 6Y1-24306-55. Always verify the part number and connection size from your engine’s service manual or the existing part before ordering.

Q: What is the arrow on the primer bulb for?
A: The arrow indicates the correct direction of fuel flow. During installation, you must ensure the arrow points from the fuel tank towards the outboard motor for the fuel system to function properly.

Q: Is this assembly compatible with ethanol-blended fuels like E10?
A: Yes. The fuel line is constructed from a modern, low-permeation rubber material that is fully compatible with today's gasoline and ethanol-blended fuels, preventing it from degrading or becoming brittle over time.

Q: What are the signs that my old fuel line needs replacement?
A: Common signs of a failing fuel line include visible cracks, brittleness, a collapsed primer bulb that won't regain its shape, or the smell of fuel, which indicates a leak. Failure to prime the engine or stalling can also point to a fuel delivery issue.

Q: OEM vs. Aftermarket?
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.