When disassembling the pump, unscrew the cover bolt 5 (see fig. 14), Remove the cover and take out the fuel filter 2 pumps. Then the screws securing the upper housing 3 of the pump and the lower housing 13 are unscrewed and separated. Turning the diaphragm assembly 90°, remove the assembly and spring.
If necessary, the axle is pressed out and the balancer 11, the lever 12 and the balancer spring are removed. Unscrew the stem nut 7 and remove the pump diaphragms.
The pump is assembled in the reverse order. When installing diaphragms, pay attention to the correct location of the holes relative to the holes in the lower pump housing.