Yamaha - Fuel Primer Pump Bulb for 8 Millimeter Fuel Lines - Fuel System Priming Component - 6YK-24360-73-00 / 6YK-24360-72-00

Overview

Anyone who runs an outboard knows how important a good primer bulb is when it’s time to start the engine. The Yamaha Fuel Primer Pump Bulb 6YK-24360-73-00 / 6YK-24360-72-00 helps move fuel quickly from the tank to the engine so you’re not cranking longer than you should. It’s especially helpful after the boat has been sitting or anytime the fuel system has been opened for service. With a solid primer bulb in the line, the engine gets fuel faster and starts more reliably.

Key Features

• Reliable Fuel System Priming – Moves fuel quickly through the line to help the engine start faster after storage or maintenance.

• Built for 8 Millimeter Fuel Lines – Designed to match common Yamaha fuel line sizes for secure installation and dependable operation.

• Marine Grade Rubber Construction – Durable rubber housing resists ethanol blended fuels, swelling, and cracking.

• One Way Internal Check Valves – Maintains forward fuel movement while preventing fuel from flowing back toward the tank.

• Textured Grip Surface – Designed for easy handling even with wet or oily hands during engine startup.

Engine & Boat Compatibility

Compatible with Yamaha outboard fuel systems that utilize an 8 millimeter primer bulb in the fuel line.

Refer to manufacturer fitment information to confirm compatibility with your specific Yamaha engine model.

FAQ

Q: What does a primer bulb do on an outboard engine?
A: It pushes fuel from the tank into the fuel system so the engine can start quickly and run smoothly.

Q: When should the primer bulb be used?
A: It’s commonly used before starting the engine, especially after the boat has been sitting or after fuel system service.

Q: How can I tell if a primer bulb needs replacing?
A: If the bulb feels hard, cracked, collapsed, or won’t stay firm after priming, it may need replacement.

Q: Why are check valves inside the primer bulb important?
A: They ensure fuel flows in one direction toward the engine and prevent fuel from draining back into the tank.

Q: Can ethanol fuel damage primer bulbs?
A: Lower quality bulbs can degrade from ethanol exposure, which is why marine grade materials are important.

• Supersessions
  6YK-24360-72-00, 6YK-24360-71-00, 6YK-24360-70-00, 6Y2-24360-70-00, 6Y2-24360-60-00, 6Y2-24360-52-00, 6Y2-24360-51-00, 6Y2-24360-02-00, 6Y2-24360-01-00, 6Y2-24360-00-00