Briggs & Stratton 270962, 271172 Disassemble Carburetor, Inspect and Clean Carburetor Components

the governor link from the grommet on top of the throttle shaft lever (B). Discard gasket.

Disassemble Carburetor

1.Remove the fixed main jet (bowl nut) and fiber washer, then remove the fuel bowl and the bowl gasket from the carburetor body. Discard the fiber washer and the gasket.

2.Remove the float hinge pin (C, Figure 27), float (A), and inlet needle (B). If the needle has a metal tip, also remove the soft needle seat in the carburetor body. Discard the hinge pin, inlet needle, and seat.

Figure 27

3.Remove idle speed screw with spring (B, Figure 28), if equipped.

4.Rotate throttle shaft (C) to the closed position. Remove throttle valve screws (F), then remove the throttle valve.Slide out the throttle shaft with the foam seal. Discard the seal.

5.Grasp choke valve and remove from choke shaft (A). Slide out choke shaft with the foam seal. Discard the seal.

6.With a modified pin punch (E), remove Welch plug(s) from carburetor body.

Figure 28

Inspect and Clean Carburetor Components

1.Inspect openings in the carburetor body for evidence of wear or damage. If found, replace the entire carburetor assembly.

2.Inspect the choke shaft, choke valve, throttle shaft, and throttle valve for evidence of wear or damage. Replace parts as necessary.

3.Using Carb/Choke Cleaner #100041 or #100042, thoroughly clean the following components, then follow with compressed air to dry:

•Passages in the fixed main jet (bowl nut)

•Inside and outside of the fuel bowl

•Float

•Choke shaft and choke valve

•Throttle shaft and throttle valve

•All passages, openings, and the inside and outside of the carburetor body

NOTE: Do not soak non-metallic components, such as floats, o-rings, seals, or diaphragms, in carb/choke cleaner or they will be damaged.

4.If any passages remain plugged after cleaning, replace the component or the entire carburetor assembly.

Assemble Carburetor

Consult the Illustrated Parts List to obtain the appropriate carburetor overhaul kit before reassembling the carburetor.

1.Install new Welch plug (A, Figure 29) with a pin punch (B) of slightly smaller diameter than the plug. Press against the plug until it is flat in the carburetor opening. Do not cave in the plug. Seal the

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