Mercury 4 SERIES

FUEL PUMP & INTREGAL FUEL TANK
90-857138R1 MAY 2000 Page 3A-5
Fuel Pump Disassembly
1. Remove screws and separate the pump cover from the pump body.
b
c
d
a
a-Pump Cover
b-Gasket
c-Pump Body
d-Screw (4)
2. Remove diaphragm by pushing in the plunger while turning the diaphragm 90° clock-
wise or counterclockwise.
a
b
c
d
e
f
a-Diaphragm
b-Spring
c-Pump Body
d-Spring
e-Plunger
f-Unlock Diaphragm - Rotate 90°