3AC-77454-0 Tohatsu SPRING SEAT

Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
Ensure that all adjustments and repairs are performed by authorized personnel that have had the correct training.
Illustration 1 g01397288
View of the left side of a C9 Petroleum Engine
(1) Air purge fitting
(2) Fuel priming pump (if equipped) Using the Engine to Prime the Fuel System
Turn the ignition switch to the OFF position.
Unlock the fuel priming pump (if equipped) by turning the cap counterclockwise.
Purging air from the fuel system requires the air purge fitting to be opened. Turn the air purge fitting counterclockwise by three full turns. Do not remove the fitting.
Do not crank the engine continuously for more than 30 seconds. Allow the starting motor to cool for two minutes before cranking the engine again.
Crank the engine for 30 seconds. Use a suitable container to catch the fuel while you crank the engine. Allow the starting motor to cool for two minutes. Note: Most of the air should be purged from the system after four or five cranking cycles.
Repeat Step 4 until the engine starts and runs. If the engine runs rough, continue to operate the engine at low idle until the engine runs smoothly.
Observe the air purge fitting. When a small drop of fuel appears at the threads of the air purge fitting, close the air purge fitting. After the air purge fitting is closed, tighten the air purge fitting. Refer to Specifications, SENR3130 for the correct torque. Note: Failure to tighten all fittings could result in serious fuel leaks.
After the engine has operated smoothly for 30 seconds, turn the priming valve to the LOCK position. Note: The life of the injectors may be shortened if the priming valve is left in the unlocked position.
Clean any residual fuel from the engine components.
Once the engine runs smoothly, stop the engine. Turn the ignition switch to the OFF position. Using the Fuel Priming Pump (If Equipped) to Prime the Fuel System
Turn the ignition to the OFF position.
Unlock the priming pump by turning the cap counterclockwise.
Purging air from the fuel system requires the air purge fitting to be opened three full turns. Open the air purge fitting. Do not remove the fitting.
Continue to operate the fuel priming pump until a strong resistance is felt. Listen for an audible click from the fuel manifold. The click will indicate that the valve has opened and the fuel system is pressurized. Lock the fuel priming pump. Note: The life of the injectors may be shortened if the priming valve is left in the unlocked position.
Do not crank the engine for more than 30 seconds. Allow the starting motor to cool for two minutes before cranking again.
Crank the engine. If the engine starts but the engine runs rough, continue to operate the engine at low idle until the engine runs smoothly. Note: If the engine will not start, further priming is necessary. If the engine starts but the engine continues to misfire, further priming is necessary.
Observe the air purge fitting. When a small drop of fuel appears at the threads of the air purge fitting, close the air purge fitting . After the air purge fitting is closed, tighten the air purge fitting. Refer to Specifications, SENR3130 for the correct torque. Note: Failure to tighten all fittings could result in serious fuel leaks.
Clean any residual fuel from the engine components.
Once the engine runs smoothly, stop the engine. Turn the ignition switch to the OFF position.