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Introduction

Follow this guide to replace a worn or damaged carburetor on the Honda FC600 tiller.

  1. Before you begin, it's important that you completely cut power to the tiller by disconnecting the spark plug. This will prevent the engine from accidentally starting up while you're working on the tiller. Grab the spark plug cap and pull it straight out to disconnect the spark plug from the engine. Grab the spark plug cap and pull it straight out to disconnect the spark plug from the engine.
    • Before you begin, it's important that you completely cut power to the tiller by disconnecting the spark plug. This will prevent the engine from accidentally starting up while you're working on the tiller.

    • Grab the spark plug cap and pull it straight out to disconnect the spark plug from the engine.

  2. Use your fingers to unscrew and remove the wing nut securing the air filter cover to the air filter elbow.
    • Use your fingers to unscrew and remove the wing nut securing the air filter cover to the air filter elbow.

  3. Lift up and remove the air filter cover to reveal the air filter. The air filter cover will still be attached to the tiller by a flexible hose. You can push the cover to the side while you continue to work on the tiller, or follow the next two steps to completely remove the cover.
    • Lift up and remove the air filter cover to reveal the air filter.

    • The air filter cover will still be attached to the tiller by a flexible hose. You can push the cover to the side while you continue to work on the tiller, or follow the next two steps to completely remove the cover.

  4. The next two steps are optional, but they will make it easier to work on the tiller from here on out. Squeeze the metal clip on the inside of the air filter cover and remove it.
    • The next two steps are optional, but they will make it easier to work on the tiller from here on out.

    • Squeeze the metal clip on the inside of the air filter cover and remove it.

  5. Hold onto the air filter hose and pull on the air filter cover to remove it. Hold onto the air filter hose and pull on the air filter cover to remove it.
    • Hold onto the air filter hose and pull on the air filter cover to remove it.

  6. Use your fingers to unscrew and remove the wing nut securing the air filter to the air filter elbow.
    • Use your fingers to unscrew and remove the wing nut securing the air filter to the air filter elbow.

  7. Wear gloves or use a rag during this step, as the air filter is coated with oil. Lift the air filter straight up off the elbow, making sure it clears the threaded rod.
    • Wear gloves or use a rag during this step, as the air filter is coated with oil.

    • Lift the air filter straight up off the elbow, making sure it clears the threaded rod.

  8. Use a 10mm socket and socket wrench to remove the 25.5 mm-long bolt securing the air filter elbow to the tiller.
    • Use a 10mm socket and socket wrench to remove the 25.5 mm-long bolt securing the air filter elbow to the tiller.

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  10. Use a 10mm socket and socket wrench to remove the two nuts securing the air filter elbow to the carburetor's threaded rods.
    • Use a 10mm socket and socket wrench to remove the two nuts securing the air filter elbow to the carburetor's threaded rods.

  11. Use a pair of snap ring pliers to loosen the spring hose clamp on the breather tube, pulling it out 2-3 cm so it's not clamping onto the end of the tube. Use a pair of snap ring pliers to loosen the spring hose clamp on the breather tube, pulling it out 2-3 cm so it's not clamping onto the end of the tube. Use a pair of snap ring pliers to loosen the spring hose clamp on the breather tube, pulling it out 2-3 cm so it's not clamping onto the end of the tube.
    • Use a pair of snap ring pliers to loosen the spring hose clamp on the breather tube, pulling it out 2-3 cm so it's not clamping onto the end of the tube.

  12. Pull the air filter elbow straight off, making sure it clears the carburetor's threaded rods. As you remove the elbow, you may need to use your other hand to remove the breather tube from the engine's valve cover.
    • Pull the air filter elbow straight off, making sure it clears the carburetor's threaded rods.

    • As you remove the elbow, you may need to use your other hand to remove the breather tube from the engine's valve cover.

  13. Pull the carburetor spacer straight off, making sure it clears the threaded rods. Pull the carburetor spacer straight off, making sure it clears the threaded rods.
    • Pull the carburetor spacer straight off, making sure it clears the threaded rods.

  14. Pull the choke lever straight up to remove it from the carburetor. Pull the choke lever straight up to remove it from the carburetor.
    • Pull the choke lever straight up to remove it from the carburetor.

  15. The next two steps demonstrate how to empty gasoline out of the carburetor before removal. Press and hold down the fuel valve's safety lock button. Begin to turn the fuel valve knob counter-clockwise, continuing to hold down the safety lock button until the knob clears the button.
    • The next two steps demonstrate how to empty gasoline out of the carburetor before removal.

    • Press and hold down the fuel valve's safety lock button.

    • Begin to turn the fuel valve knob counter-clockwise, continuing to hold down the safety lock button until the knob clears the button.

  16. Place a small gasoline-safe container under the drain spout. Turn the fuel valve knob counter-clockwise until it faces downward to drain any gasoline that may be remaining in the carburetor.
    • Place a small gasoline-safe container under the drain spout.

    • Turn the fuel valve knob counter-clockwise until it faces downward to drain any gasoline that may be remaining in the carburetor.

  17. Use a pair of needle nose pliers to squeeze and loosen the spring hose clamp on the fuel supply hose. Move the clamp up 2-3 cm so it's not clamping down onto the end of the tube. Move the clamp up 2-3 cm so it's not clamping down onto the end of the tube.
    • Use a pair of needle nose pliers to squeeze and loosen the spring hose clamp on the fuel supply hose.

    • Move the clamp up 2-3 cm so it's not clamping down onto the end of the tube.

  18. Wear gloves or use a rag during this step, as gasoline will begin to drain out once you remove the hose. If you didn't completely drain the fuel tank beforehand, have a gasoline-safe container ready to catch the gasoline as it drains out of the hose.
    • Wear gloves or use a rag during this step, as gasoline will begin to drain out once you remove the hose.

    • If you didn't completely drain the fuel tank beforehand, have a gasoline-safe container ready to catch the gasoline as it drains out of the hose.

    • Grab onto the end of the fuel supply hose and pull it straight up to disconnect it from the carburetor.

  19. Pull the carburetor halfway out, but do not completely remove it yet. Pull the carburetor halfway out, but do not completely remove it yet.
    • Pull the carburetor halfway out, but do not completely remove it yet.

  20. Grab the throttle return spring and push it down to point the tip of the hook downward. Apply an upward motion to lift the tip of the hook out of its connector on the carburetor. Apply an upward motion to lift the tip of the hook out of its connector on the carburetor.
    • Grab the throttle return spring and push it down to point the tip of the hook downward.

    • Apply an upward motion to lift the tip of the hook out of its connector on the carburetor.

  21. Grab the governor rod and lift it straight up to remove it from the carburetor. Grab the governor rod and lift it straight up to remove it from the carburetor.
    • Grab the governor rod and lift it straight up to remove it from the carburetor.

  22. Pull the carburetor straight off of the threaded rods to remove it. Pull the carburetor straight off of the threaded rods to remove it.
    • Pull the carburetor straight off of the threaded rods to remove it.

  23. The outlet on the rear of the carburetor has a thin gasket. Inspect the gasket's condition and replace if needed.
    • The outlet on the rear of the carburetor has a thin gasket. Inspect the gasket's condition and replace if needed.

Conclusion

To reassemble your device, follow these instructions in reverse order.

Craig Lloyd

Member since: 02/10/2016

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