Carburetor — maintenance (Peugeot 305)

1. Keep in mind that the carburetor itself rarely requires adjustment, and the need for it usually arises when trying to compensate for the drop in efficiency of an old engine by changing the operating parameters of the carburetor. In countries where emission levels are regulated by law, carburetor adjustment should be carried out in parallel with emission level control (using special equipment).

2. The main cause of carburetor problems is wear of moving parts or clogged jets. The Solex carburetor has no constantly moving parts except for the float and throttle shaft, which makes it extremely reliable (unless dirt gets into it). If you lubricate the carburetor linkages and throttle shaft with engine oil from time to time, the carburetor can last for years and will not need to be rebuilt until the entire engine is rebuilt.

3. Routine maintenance of the carburetor consists only of periodic cleaning of the float chamber and jets and inspection of the mesh filters located at the carburetor inlet and the accelerator pump inlet. All these operations can be performed without removing the carburetor from the engine.

4. Before disconnecting the upper part of the carburetor from the lower one, it is necessary to thoroughly clean it from the outside with kerosene or a branded cleaner and a stiff brush, and then wipe it dry with a clean cloth. All this is necessary to prevent dirt from getting into the carburetor.

5. Remove the jets, wash them in clean gasoline and blow them out with compressed air. Do not clean the jets with wire, as this may disrupt their calibration.

6. Pull out the float axis and remove the float. Unscrew the needle valve and wash it in gasoline. Remove sediment from the float chamber by rinsing it with gasoline (it is forbidden to wipe the camera with rags). The mesh filters on the carburetor inlet and the accelerator pump inlet must be washed with clean gasoline and dried with compressed air (it is forbidden to wipe them with rags). After installing the float, check and, if necessary, adjust the upper position of the float (see section 8). Check the stroke of the accelerator pump and adjust it if necessary (see section 9).