Mercury 9.9 EH Manual page 79

Without sufficient cooling water, the engine, the water pump,
and other components will overheat and suffer damage.
Provide a sufficient supply of water to the water inlets during
operation.
2. Loosen the air vent screw on the tank cap.
3. Feed fuel to the carburetor by squeezing the primer bulb until
it is firm.
a - To fuel tank
b - To engine
4. Make sure the cooling water intake is submerged.
OPERATION
NOTICE
a
69
37518
b
c
37714
c - Fuel flow direction
27029