Mercury 4C Instruction Manual page 64

3. Attach the fuel connector to the engine connector.
4. The arrow mark on the primer bulb should be facing the
engine (separate fuel tank).
5. Open the fuel valve (internal fuel tank).
6. Feed fuel to the carburetor by squeezing the primer bulb
until it is firm (separate fuel tank).
a
OPERATION
a
a -
b -
b
41834
b
c
37714
19748
Air vent screw
Fuel valve
a - To fuel tank
b - To engine
c - Fuel flow direction
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eng