| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 1 Year |
|
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| 1. Precision Design: The valve needle is typically designed with high precision to control fuel flow accurately, ensuring that the engine runs smoothly without flooding or fuel starvation. |
| 2. Tapered Tip: It often features a tapered tip that fits into the valve seat, allowing for precise control over the amount of fuel entering the engine. This helps with metering the fuel as per the engine's requirements. |
| 3. Spring Mechanism (in some cases): In some applications, the valve needle is connected to a spring-loaded mechanism to help control its movement, ensuring it opens and closes based on engine demand. |
| 1. Regulates Fuel Flow: The main function of the valve needle is to regulate the fuel flow into the engine's combustion chamber. It opens and closes based on the engine's throttle position, allowing the right amount of fuel to mix with air for combustion. |
| 2. Prevents Fuel Overflow: The needle works with the float in the carburetor to prevent excess fuel from entering the engine. When the fuel level reaches a certain point, the float rises, pushing the needle into the valve seat and stopping additional fuel flow. |
| 3. Optimizes Engine Performance: By controlling the fuel flow, the valve needle ensures efficient combustion, contributing to smoother engine operation, better fuel economy, and lower emissions. |
| 4. Prevents Engine Flooding: In case the needle fails to seat properly, it can cause flooding, leading to starting problems or poor engine performance. A well-functioning valve needle prevents such issues. |
| 1. Length: Typically ranges from 10 to 25 mm (0.4 to 1 inch), depending on the engine model. |
| 2. Diameter: The diameter of the needle is usually between 1 to 5 mm. |
| 3. Custom Fit: Each valve needle is specifically designed for the carburetor or fuel injection system of a particular Yamaha outboard motor model, ensuring a perfect fit for precise fuel control. |
| 1. Regular Inspection: Periodically inspect the valve needle for signs of wear, especially if the engine shows symptoms like flooding, poor fuel economy, or rough idling. A worn or damaged needle can affect fuel flow regulation. |
| 2. Check for Fuel Leaks: If you notice fuel leaking from the carburetor or fuel system, it may be due to a faulty valve needle or improper seating. Ensure that the needle and seat are clean and in good condition. |
| 3. Clean the Carburetor: Dirt, debris, or varnish buildup in the carburetor can affect the movement of the valve needle, causing it to stick or fail to seat properly. Cleaning the carburetor regularly will help maintain proper needle function. |
| 4. Replace When Worn: If the needle shows signs of wear, such as grooves or flattened tips, replace it. Worn needles can cause fuel leakage or improper fuel metering, leading to engine performance issues. |
| 5. Monitor Float Functionality: The valve needle works in conjunction with the carburetor float. If the float is damaged or not working correctly, it can prevent the needle from seating properly, leading to fuel overflow. Ensure both components are functioning well. |
| 6. Avoid Contaminated Fuel: Contaminated fuel can introduce particles that may interfere with the valve needle's ability to seat correctly, causing fuel flow issues. Use clean fuel and consider installing a fuel filter to prevent debris from entering the carburetor. |
| 1. Engine Flooding: If the engine is difficult to start or exhibits symptoms of flooding (excessive fuel), the valve needle may be sticking or failing to close properly. |
| 2. Poor Fuel Economy: A damaged or worn valve needle can cause fuel leakage or improper fuel delivery, leading to reduced fuel efficiency. |
| 3. Rough Idling or Poor Acceleration: Improper fuel regulation due to a malfunctioning valve needle can lead to rough idling, hesitation during acceleration, or uneven engine performance. |
| 4. Fuel Leaks: Visible fuel leaks around the carburetor could indicate that the needle is not sealing properly, allowing excess fuel to flow into the system. |
| PART NO | DESCRIPTION |
| 6K5-14301-03 | CARBURETOR ASSY 1 CARBURADOR COMPLETO 1 |
| 6K5-14302-03 | CARBURETOR ASSY 2 CARBURADOR COMPLETO 2 |
| 6K5-14303-03 | CARBURETOR ASSY 3 CARBURADOR COMPLETO 3 |
| 6H2-14947-02 | NOZZLE, MAIN INYECTOR DE AGUJA |
| 676-14943-34 | JET, MAIN (#135) INYECTOR PRINCIPAL (#135) |
| 6H4-14948-15 | JET, SLOW (#70) INYECTOR (#70) |
| 676-14966-00 | CAP TAPA |
| 6H3-14590-01 | NEEDLE VALVE ASSY VALVULA DE AGUJA COMPLETA |
| 663-14159-00 | CLIP PRESILLA |
| 676-14186-00 | PIN, FLOAT PASADOR DE LA BOYA |
| 98580-04008 | SCREW, PAN HEAD TORNILLO DE CABEZA CRUZADA |
| 6G1-14985-00 | FLOAT BOIA |
| 688-14548-00 | PIN, FLOAT ARM PASADOR DE BRAZO DE BOIA |
| 6G1-14984-00 | O-RING EMPAQUE CAMARA DE BOIA |
| 6H2-14980-00 | BODY, FLOAT CHAMBER CUERPO CAMARA DE BOIA |
| 97980-04114 | SCREW, WITH WASHER TORNILLO, CON ARANDELA |
| 6H3-14992-00 | SCREW, DRAIN TORNILLO,SEGURO |
| 93210-04230 | O-RING ANILLO O |
| 663-14126-00 | GASKET EMPAQUE |
| 663-14527-00 | PLATE PLACA |
| 688-14126-00 | GASKET EMPAQUE |
| 688-14527-00 | PLATE PLACA |
| 6H2-14527-01 | PLATE PLACA |
| 97980-05310 | SCREW, WITH WASHER TORNILLO, CON ARANDELA |
| 692-14923-00 | SCREW, PILOT TORNILLO DE AJUSTE |
| 679-14555-00 | SPRING RESORTE |
| 6K5-14592-00 | SCREW TORNILLO |
| 90201-05652 | WASHER, PLATE ARANDELA PLANA |
| 63V-14523-00 | SCREW, STOP TORNILLO DE TOPE |
| 90501-10326 | SPRING, COMPRESSION RESORTE DE COMPRESION |
| 6H2-14578-00 | COLLAR COLLAR |
| 6H3-14578-00 | PLATE COLLAR |
| 93210-15M52 | O-RING ANILLO O |
| 93210-04228 | O-RING ANILLO O |
| 6K5-14945-36 | JET, AIR MAIN (#145) INYECTOR (#145) |
| 6K5-14950-21 | JET, AIR SLOW (#85) ESPREA DE AIRE PILOTO (#85) |
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