Yamaha - Carburetor assy 1 - 7CR-E4101-41-00Yamaha Carburetor Assembly 1 Fuel System Component 7CR E4101 41 00 Overview When a carb starts to fall off, youll feel it right awayrough idle, sluggish throttle, or hard starts. Ive worked on plenty where cleaning only got it halfway back, and replacing the full assembly fixed it for good. A fresh carb brings the engine back into balance so it runs smooth and predictable again. Once its in, you can feel the difference every time you throttle up. Key