Service manual for marvel-schebler

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It may not display this or other websites correctly. You should upgrade or use an alternative browser. Thread starter TractorDom Start date Nov 11, Place a rag underneath the fuel line to catch drippings. Pull the heat tube free if it has one attached to the carburetor.

Use a socket to remove the two carburetor base bolts. Gently pry the carburetor free from the intake manifold and take it to a work bench. Use a large flat-head screwdriver to remove the four air horn top case plate screws, and separate the two halves of the carburetor body. Flip the the air horn over and examine the float.

Gently tap it to make sure it has no fuel inside it. You will have to replace the float if fuel has entered inside it. Make note of the pivot rod the float sits on and the gap underneath the bottom of the float and the case plate.

The float should not swivel upward upon pushing the drill bit underneath it, nor should it have a gap wider than the diameter of the drill bit.

To adjust the float height, use needle-nose pliers to bend the small tang arm that attaches to the float and the pivot assembly. Bend the tang either up or down. Turn the air horn over and place it back on the carburetor base. Insert the screws and tighten them with a screwdriver. Place the carburetor back on the intake manifold and tighten the mounting bolts with a socket.

Snap the throttle cable ball back onto its socket. Replace the heat tube in its socket. Use a large flat-head screwdriver to remove the four air horn top case plate screws, and separate the two halves of the carburetor body. Flip the the air horn over and examine the float. Gently tap it to make sure it has no fuel inside it. You will have to replace the float if fuel has entered inside it.

Make note of the pivot rod the float sits on and the gap underneath the bottom of the float and the case plate. The float should not swivel upward upon pushing the drill bit underneath it, nor should it have a gap wider than the diameter of the drill bit. To adjust the float height, use needle-nose pliers to bend the small tang arm that attaches to the float and the pivot assembly.

Bend the tang either up or down. Turn the air horn over and place it back on the carburetor base. Insert the screws and tighten them with a screwdriver. Place the carburetor back on the intake manifold and tighten the mounting bolts with a socket.

Snap the throttle cable ball back onto its socket. Replace the heat tube in its socket. Reconnect the linkages arms, and secure the retaining clips or cotter pins. Thread the fuel line into the carburetor by hand and tighten it with a fuel line wrench. Replace the air cleaner assembly, and tighten the bolts with a socket or screwdriver. Replace the draft tube if removed.