Yamaha - Diaphragm - Fuel Pump System - 6E0-24471-00-00

Overview

This is one of those small parts that quietly keeps your engine running right until it doesn’t. The diaphragm is constantly working inside the fuel pump, and once it starts to wear out, fuel delivery gets uneven fast. I’ve seen engines that hesitate or won’t idle properly, and it all comes back to this piece losing its flexibility. Replacing it is a simple fix that helps bring everything back to smooth, steady performance.

Key Features

• Steady Fuel Delivery – Maintains consistent fuel flow through the pump for reliable engine operation.
• Flexible Rubber Construction – Designed to handle constant pulsing without cracking or stiffening too quickly.
• Fuel-Resistant Material – Built to withstand long-term exposure to gasoline and additives.
• OEM Precision Fit – Matches original specifications for proper sealing and easy installation.

Engine & Boat Compatibility

Designed for Yamaha 2-stroke outboard engines with diaphragm-style fuel pump systems. Commonly used on smaller horsepower motors found on skiffs, jon boats, and lightweight fishing setups.

FAQ

Q: What are common signs of a worn diaphragm?
A: Rough idle, hesitation, or inconsistent fuel delivery are typical signs.

Q: Can this cause the engine to lose power?
A: Yes, especially under load when the engine needs steady fuel flow.

Q: Should I replace this during fuel pump maintenance?
A: It’s a good idea, especially if the engine has a lot of hours on it.

Q: Does old fuel affect this part?
A: Definitely—stale fuel can cause it to stiffen and wear out faster.

Q: Is installation difficult?
A: It’s manageable if you’re comfortable opening and reassembling the fuel pump carefully.