Notes:
- Wash the fuel pump parts in gasoline and blow them out with compressed air.
- The tightness of the valves is checked on the assembled pump. To check, pump the fuel pump with a lever, alternately closing the suction and discharge pipes with a finger. There should be a vacuum in the suction pipe, and pressure in the discharge pipe.
1. Inspect the upper and lower pump housings. Replace parts with cracks and chips.
2. If the suction and discharge pipes do not fit tightly in the pump housing, replace the housing.
3. Replace torn, frayed or hardened diaphragms.
6. Assemble the fuel pump in the reverse order of removal.
4. Replace a torn or warped mesh filter.
5. Replace leaky valves along with their seats.