| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 1 Year |
|
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| 1. Precision Fuel Control: The needle valve is finely tapered to allow accurate control over the fuel flow, ensuring that the carburetor gets just the right amount of fuel to mix with air, especially at varying engine speeds. |
| 2. High Durability: Yamaha's needle valve assemblies are made to withstand constant exposure to gasoline and engine vibrations, reducing the chances of wear and providing long-lasting, reliable performance. |
| 3. Fuel Economy Enhancement: By controlling the precise amount of fuel entering the carburetor, the needle valve assembly contributes to fuel efficiency, helping avoid flooding or fuel wastage. |
| 4. Simple Adjustment: Many Yamaha needle valves are designed to be adjustable, allowing fine-tuning for optimal performance and responsiveness. |
| 1. Regulating Fuel Flow: The needle valve assembly acts as a gatekeeper, opening and closing to allow fuel into the carburetor bowl as needed. When fuel is low, the valve opens to refill the bowl, and when it reaches a certain level, the valve closes to prevent overflow. |
| 2. Ensuring Optimal Fuel-Air Mixture: The needle valve's regulation of fuel flow helps achieve the ideal fuel-to-air ratio, which is crucial for efficient combustion. This balance prevents both lean and rich conditions that could affect performance or damage the engine. |
| 3. Preventing Carburetor Flooding: By controlling fuel entry, the needle valve assembly helps prevent excess fuel from flooding the carburetor, a common cause of rough idling, hard starts, and power loss. |
| 1. Regular Inspection: Regularly inspect the needle valve and its components for signs of wear or damage, particularly the rubber tip. A worn tip can cause improper sealing, leading to fuel leaks or flooding. |
| 2. Clean the Carburetor: Keeping the carburetor clean is essential for the needle valve to function correctly. Residual fuel, dirt, and debris can accumulate over time, potentially clogging the valve. Periodically clean the carburetor and the needle valve to ensure optimal fuel flow. |
| 3. Check for Leaks: Inspect the area around the needle valve for any fuel leaks, which can indicate wear or improper seating. Replace the needle valve or seat if you notice fuel leakage. |
| 4. Avoid Ethanol-Based Fuels: Ethanol in fuel can cause rubber and plastic parts in the fuel system to degrade more quickly. If possible, use non-ethanol fuel, or regularly check and replace the needle valve tip if you use ethanol-blended fuel. |
| 5. Replace Worn Parts Promptly: A worn or damaged needle valve or seat can lead to a poor fuel-to-air mixture, affecting engine performance. If you notice issues like flooding, erratic idling, or hard starts, inspect and replace the needle valve assembly as needed. |
| 6. Seasonal Maintenance: Before storing your outboard motor for an extended period, drain the fuel system or use a fuel stabilizer. This helps prevent fuel residue buildup around the needle valve, which could impact its function the next time the motor is used. |
| 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 |
| 6F6-14301-04 | CARBURETOR ASSY 1 CARBURADOR COMPLETO 1 |
| 6F6-14301-12 | CARBURETOR ASSY 1 CARBURADOR COMPLETO 1 |
| 6F5-14384-00 | GASKET, FLOAT CHAMBER EMPAQUE DE CAMARA DE BOIA |
| 6F6-14381-00 | BODY, FLOAT CHAMBER CUERPO DE CAMARA DE BOIA |
| 6F6-14341-00 | NOZZLE, MAIN BOQUILLA PRINCIPAL |
| 1J2-14398-00 | GASKET EMPAQUE |
| 677-14343-75 | JET, MAIN (#150) INYECTOR PRINCIPAL (#150) |
| 6F6-14385-00 | FLOAT BOIA |
| 98980-04006 | SCREW, BIND TORNILLO DE LIGAR |
| 6E5-14386-01 | PIN, FLOAT PASADOR DE BOIA |
| 6F5-14390-21 | NEEDLE VALVE ASSY VALVULA DE AGUJA COMPLETA |
| 367-14195-00 | GASKET ARANDELA DE VALVULA DE AGUJA |
| 647-14342-42 | JET, PILOT (# 84) ESPREA DE PILOTO (# 84) |
| 6F6-14383-00 | PLATE TORNILLO DE DRENAJE |
| 6F5-14398-00 | GASKET EMPAQUE |
| 97890-05010 | SCREW, PAN HEAD TORNILLO |
| 92990-05100 | WASHER, SPRING ARANDELA PLANA |
| 92990-05600 | WASHER, PLATE ARANDELA PLANA |
| 97980-04110 | SCREW, WITH WASHER TORNILLO, CON ARANDELA |
| 650-14321-01 | SCREW, THROTTLE TORNILLO DE OBTURADOR |
| 647-14334-00 | SPRING RESORTE DE AJUSTADOR DE AIRE |
| 97603-05117 | SCREW, PAN HEAD WITH WASHER TORNILLO |
| 6F5-14383-10 | SCREW, DRAIN TORNILLO DE DRENAJE |
| 6E5-14398-00 | GASKET EMPAQUE |
| 6F5-14323-01 | SCREW, AIR ADJUSTING TORNILLO DE AJUSTE DE AIRE |
| 6F5-14334-01 | SPRING, AIR ADJUSTING RESORTE DE AJUSTADOR DE AIRE |
| 6F5-14397-00 | O-RING ANILLO EN O |
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