Tools and Supplies Needed:
1. Carburetor rebuilding kit (specific to 1986 Mazda B2000)
2. Socket set
3. Screwdriver set
4. Pliers
5. Fuel line wrench
6. Throttle shaft wrench
7. Carburetor cleaner spray
Step 1: Preparation
1. Disconnect the negative terminal from the car's battery to ensure safety.
2. Remove the air filter assembly to gain full access to the carburetor.
Step 2: Fuel System Disconnection
1. Disconnect all fuel lines from the carburetor. Carefully catch any residual fuel in a container to avoid spills.
2. Disconnect any linkage (such as choke or throttle) connected to the carburetor.
Step 3: Remove the Carburetor
1. Locate and remove the bolts securing the carburetor to the intake manifold.
2. Gently lift the carburetor off the manifold. Be cautious as there may residual fuel inside that could spill out.
Step 4: Disassembly and Cleaning
1. Place the disassembled parts in an appropriate container to keep them organized and prevent loss.
2. Clean all components thoroughly using carburetor cleaner spray. Pay close attention to jets and passages to ensure they are clear of debris. Take care to not spray in sensitive diaphragm areas to prevent damage.
Step 5: Carburetor Reassembly
1. Start with the gaskets and seals. Ensure that all gasket surfaces are clean before installation to prevent leaks and air leaks.
2. Proceed to install the carburetor body components as per the specifications in the rebuilding kit. Tighten any screws or bolts to the specified torque.
Step 6: Jets and Needles
1. Carefully install the jets and needles following the instructions in the rebuilding kit. Ensure proper seating and alignment to allow for proper fuel mixture flow.
Step 7: Float Adjustment
1. Install the float bowl and ensure that the carburetor float level is set correctly per the specifications. This will help maintain proper fuel levels within the carburetor.
Step 8: Linkage Re-installation
1. Attach the necessary linkages (choke, throttle, etc.) back to the carburetor.
Step 9: Carburetor Installation
1. Carefully reposition the rebuilt carburetor onto the intake manifold and secure it using the bolts. Tighten the bolts to the specified torque.
Step 10: Re-connect Fuel Lines and Wiring
1. Reconnect all the fuel lines and any electrical connections. Double-check for leaks and secure connections.
Step 11: Air Filter Assembly
1. Reinstall the air filter assembly.
Step 12: Engine Start and Adjustment
1. Reconnect the battery's negative terminal.
2. Start the engine and let it warm up.
3. Perform any necessary adjustments to the idle mixture and speed using the adjusting screws on the carburetor.
Remember, while these steps provide a general overview, it's essential to refer to the specific manufacturer's service manual for your 1986 Mazda B2000 for detailed and accurate instructions.
