Concealment Plug Removal

Removing Idle Needle Concealment Plugs:

1. Remove the carburetor from engine following normal service procedures, to gain access to the plugs covering the idle mixture needles.
2. Invert carburetor and drain fuel into a suitable container.
3. Place carburetor on a suitable holding fixture, with manifold side up. Use care to avoid damaging linkage, tubes, and parts protruding from air horn.
4. Make two parallel cuts in the throttle body, one on each side of the locator points beneath the idle mixture needle plug (manifold side), with a hacksaw.
5. The cuts should reach down to the steel plug, but should not extend more than 1/8" beyond the locator points. The distance between the saw cuts depends on the size of the punch to be used.
6. Place a flat punch near the ends of the saw marks in the throttle body. Hold the punch at a 45° angle and drive it into the throttle body until the casting breaks away, exposing the steel plug. The hardened plug will break, rather than remaining intact. It is not necessary to remove the plug in one piece, but remove the loose pieces.
7. Repeat this procedure with the other mixture needle.