1985 Mercury Outboard V-300 V-3.4L Shop Service Manual, Page 84Get this manual
FUEL LINE and PRIMER BULB ASSEMBLY Fuel Line and Primer Bulb Components
1Fuel Line Connector (Fuel Tank End)
3 45678910 11 12 13 "0" Ring Spring Washer (Cupped) Fitting (Fuel line) Clamp Fuel Line Primer Bulb Check Va ve (Whi te or Blue) Check Va ve (Black) Fitting (Fuel Line) Fuel Line Connector (Engine End)