Yamaha - Carburetor Assembly 1 Fuel System Component 7CR-E4101-61-00. Overview. When a carb starts acting up, it doesn't take long before the whole engine feels off-rough idle, hesitation, or weak throttle response. I've worked on plenty where cleaning only got it halfway there, and replacing the full assembly made the real difference. A fresh carb brings everything back into balance so the motor runs smooth and predictable again. Once it's in, you'll notice cleaner starts and more consistent power.. Key Features. • Balanced Fuel-Air Mixture - Delivers the correct mix for smooth idle and steady acceleration.• Complete Assembly Design - Ready-to-install unit simplifies replacement and reduces downtime.• OEM Fit and Linkage Alignment - Matches factory setup for proper mounting and throttle control.• Restores Engine Performance - Helps eliminate hesitation, rough running, and uneven power delivery.. Engine & Boat Compatibility. Designed for Yamaha outboard engines equipped with carbureted