Diesel Data: Automotive Repair

F. Reinstall Carburetor

1. Inspect the carburetor to determine if the concealment plug at the idle mixture adjusting screw (MAS) was previously removed and not reinstalled. If the plug is missing, skip steps 2 through 4. If the plug is present, proceed to step 2.

2. Clamp the carburetor in a vise with the idle mixture adjusting screw (MAS) facing up. (Make sure to protect the gasket surface from the vise jaws).





3. Drill a 5/64 in. (2 mm) pilot hole in the bottom area of the casting surrounding the idle mixture adjusting screw (MAS), then redrill the hole to 1/8 in. (3 mm), (Figure 10).

4. Insert a blunt pin punch into the hole and drive out the plug.

5. Reinstall the carburetor using the Service Manual procedure. Use a new carburetor gasket from the emissions service parts package.

6. Reinstall the throttle return spring.

7. Refill the radiator coolant.