RoadKing Carburetor Instruction Manual

1. Introduction

This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of your RoadKing Carburetor, Model CB-17564-47. This carburetor is specifically designed for EZGO 1989-1993 2-Cycle Marathon golf cart models. Please read this manual thoroughly before installation and use to ensure proper function and longevity of the product.

2. Safety Information

Always prioritize safety when working with fuel systems. Failure to follow these safety guidelines may result in personal injury or damage to equipment.

• Ensure the golf cart's engine is off and cool before beginning any work.
• Disconnect the battery to prevent accidental starting.
• Work in a well-ventilated area to avoid inhaling fuel fumes.
• Wear appropriate personal protective equipment, including safety glasses and gloves.
• Keep fire extinguishers or other fire suppression equipment readily available.
• Handle fuel with extreme care; it is highly flammable.
• Dispose of old fuel and parts according to local regulations.

3. Product Overview

The RoadKing Carburetor (Model CB-17564-47) is a replacement component for EZGO 1989-1993 2-Cycle Marathon golf carts. It is designed to mix air and fuel in the correct ratio for combustion, ensuring optimal engine performance. This unit features a bolt-on flange type for straightforward installation.

Figure 1: RoadKing Carburetor, Model CB-17564-47. This image displays the complete carburetor assembly, including the main body, fuel bowl, and throttle linkage components.

4. Installation

4.1 Tools Required (Typical)

• Socket wrench set
• Screwdriver set
• Pliers
• Fuel line clamp
• Clean rags
• New carburetor gasket (Note: Gasket is typically sold separately and is essential for a proper seal.)

4.2 Installation Steps

1. Preparation: Ensure the golf cart is on a level surface, the engine is off and cool, and the battery is disconnected. Place a drip pan under the carburetor area to catch any spilled fuel.
2. Remove Air Filter Assembly: Carefully detach the air filter housing and any associated ducting to gain access to the carburetor.
3. Disconnect Fuel Line: Using a fuel line clamp, pinch the fuel line leading to the carburetor. Disconnect the fuel line from the old carburetor. Be prepared for a small amount of fuel spillage.
4. Disconnect Linkages: Detach the throttle cable and choke cable (if applicable) from the old carburetor. Note their original positions for correct reattachment.
5. Remove Old Carburetor: Unscrew the mounting bolts that secure the carburetor to the engine manifold. Carefully remove the old carburetor and discard the old gasket.
6. Install New Gasket: Place a new carburetor gasket onto the manifold studs. Ensure it is correctly aligned.
7. Mount New Carburetor: Position the new RoadKing Carburetor onto the manifold studs, aligning it with the gasket. Secure it with the mounting bolts, tightening them evenly to prevent leaks.
8. Reconnect Linkages: Reattach the throttle cable and choke cable to the new carburetor in their original positions. Verify smooth operation of the throttle and choke mechanisms.
9. Reconnect Fuel Line: Remove the fuel line clamp and securely reattach the fuel line to the new carburetor. Check for any leaks.
10. Reinstall Air Filter Assembly: Reattach the air filter housing and ducting.
11. Final Checks: Double-check all connections, ensuring they are secure. Wipe away any spilled fuel.

5. Operating and Adjustments

5.1 Initial Startup

After installation, reconnect the battery. Before starting the engine, prime the fuel system by allowing the fuel pump to fill the carburetor bowl. Start the engine and allow it to warm up. The engine may run rough initially until the fuel system is fully pressurized and the carburetor is properly adjusted.

5.2 Carburetor Adjustments

Your RoadKing Carburetor is pre-set from the factory for general operation. However, minor adjustments may be necessary for optimal performance based on your specific golf cart and environmental conditions. Common adjustments include the idle speed screw and the air/fuel mixture screw.

• Idle Speed Adjustment: Locate the idle speed screw (often with a spring). Turn it clockwise to increase idle speed or counter-clockwise to decrease it. Adjust until the engine idles smoothly at the manufacturer's recommended RPM.
• Air/Fuel Mixture Adjustment: Locate the air/fuel mixture screw. This screw controls the ratio of air to fuel. Adjust in small increments (e.g., 1/8 to 1/4 turn) while listening to the engine's response. Turning clockwise typically leans the mixture (less fuel), and counter-clockwise enriches it (more fuel). Aim for the highest, smoothest idle. Once the optimal setting is found, re-adjust the idle speed if necessary.

Caution: Improper carburetor adjustments can lead to poor engine performance, increased fuel consumption, or engine damage. If you are unsure, consult a qualified mechanic.

6. Maintenance

Regular maintenance of your carburetor ensures reliable performance and extends its lifespan.

• Fuel Filter: Regularly inspect and replace the fuel filter to prevent contaminants from reaching the carburetor.
• Air Filter: Ensure the air filter is clean and free of debris. A dirty air filter can restrict airflow and affect the air/fuel mixture.
• Fuel Quality: Use fresh, clean fuel. Stale or contaminated fuel can cause deposits and blockages within the carburetor.
• Carburetor Cleaning: If performance issues arise, the carburetor may need cleaning. This typically involves disassembling the carburetor, cleaning jets and passages with carburetor cleaner, and replacing gaskets. This procedure should only be performed by individuals with mechanical experience.
• Linkage Inspection: Periodically check throttle and choke linkages for proper movement and ensure they are not sticking or binding.

7. Troubleshooting

This section addresses common issues you might encounter with your carburetor.

If troubleshooting steps do not resolve the issue, it is recommended to consult a qualified golf cart technician.

8. Specifications

9. Warranty Information

RoadKing products are manufactured to high-quality standards. This carburetor is covered by the manufacturer's standard limited warranty against defects in materials and workmanship. For specific warranty terms, conditions, and duration, please refer to the warranty documentation included with your purchase or contact RoadKing customer support. Keep your proof of purchase for warranty claims.

10. Customer Support

If you have any questions regarding the installation, operation, or maintenance of your RoadKing Carburetor, or if you require technical assistance, please contact our customer support team. Refer to the contact information provided with your product packaging or visit the official RoadKing website for support details.

Online Resources: RoadKing Store on Amazon