1983 Yamaha 30EN Outboards Service Manual, Page 38Get this manual
I nstall the gasket, diaphragm and gasket on the cover on the opposite side, place the cover on the pump body, and secure it with three screws 1 Cover
2Gasket
3 Diaphragm
Place the gasket on the crankcase, place the fuel pump on it, and secure with two boltsNext, connect the pipe (coming from the fuel filter) to IN, and OUT, then lock them with clips