2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 113Get this manual
FUEL SYSTEM FUEL PUMP Turn the piston until the pin comes out through the cutaway of the pump bodyRemove the pin, the piston, the diaphragm rod, and the two springsInspect the check valves in the valve body for damage3
4 2Valve body
2Check valves
Assembly
_- Install the two springs, the diaphragm rod, and the piston in the pump bodyConnect the diaphragm rod to the piston with the pin After connecting the diaphragm rod to the piston, align the six bolt holes in the diaphragm rod with the bolt holes in the pump body by turning the piston and diaphragm rod togetherThis prevents the pin from coming out through the cutaway in the pump body