Yamaha - Diaphragm Assembly - Fuel Pump Component - 7CU-E1960-00-00

Overview

Diaphragms are one of those small parts that can cause big headaches when they start to wear out. I’ve seen engines struggle to stay running or lose power just because the fuel pump couldn’t keep up anymore. Once you swap in a fresh diaphragm, fuel delivery evens out and the engine runs steady again. It’s a simple fix that makes a noticeable difference on the water.

Key Features

• Consistent Fuel Pump Operation – Helps maintain steady fuel flow through the pump system.
• Flexible Diaphragm Material – Designed to move efficiently with engine pulses for proper fuel transfer.
• OEM Fit and Sealing – Matches factory specs to ensure proper fit and leak-free performance.
• Reliable Performance Support – Restores fuel delivery consistency for smooth engine operation.

Engine & Boat Compatibility

Designed for Yamaha outboard engines that utilize diaphragm-style fuel pumps. Commonly used across a range of Yamaha outboards where consistent fuel delivery is critical for proper engine performance.

FAQ

Q: What are signs a diaphragm is going bad?
A: Engine stalling, weak fuel delivery, or difficulty staying running at idle are common signs.

Q: Can a worn diaphragm affect high-speed performance?
A: Yes, it can limit fuel supply, causing the engine to lose power at higher throttle.

Q: How often should this be replaced?
A: It depends on usage, but it’s often replaced during fuel system maintenance or when issues appear.

Q: Does ethanol fuel impact diaphragm life?
A: Yes, ethanol can cause the material to wear faster over time.

Q: Any tips for installation?
A: Make sure surfaces are clean and properly aligned to ensure a good seal and proper operation.

• Supersessions
  7X6-11960-00-00