Yamaha - Diaphragm Assembly 2 - Fuel System Component - 62Y-14369-30-00

Overview

Small part, big impact—especially when it comes to fuel delivery. I’ve seen engines run rough or struggle to stay consistent just because a diaphragm started to wear out or stiffen up. When this piece isn’t flexing the way it should, fuel flow gets uneven fast. Swap it out, and you usually get that smooth, steady performance back without chasing bigger issues.

Key Features

• Responsive Fuel Control – Regulates fuel movement through the system for consistent engine operation.
• Genuine Yamaha Fitment – Built to match factory specs for proper sealing and function.
• Flexible, Durable Material – Designed to maintain performance under constant movement and fuel exposure.
• Prevents Fuel Irregularities – Helps eliminate surging, hesitation, and inconsistent delivery.
• Direct Replacement Design – Fits cleanly into the existing assembly with no modifications needed.

Engine & Boat Compatibility

Compatible with select Yamaha outboards using this diaphragm assembly. Verify fitment based on your specific engine model.

FAQ

Q: What are signs of a failing diaphragm?
A: Hesitation, inconsistent fuel delivery, rough idle, or difficulty maintaining speed.

Q: Can a worn diaphragm affect fuel efficiency?
A: Yes, it can cause improper fuel flow, leading to higher fuel consumption.

Q: Is this a common maintenance item?
A: It can wear over time, especially with regular use or exposure to ethanol fuels.

Q: Is installation difficult?
A: It’s generally straightforward, but proper placement and sealing are important.

Q: Should I replace other parts at the same time?
A: It’s a good idea to inspect surrounding gaskets and components while servicing the system.