Installation & Testing Series Videos of NGH GF60i2 Engine(Ⅲ)

Aug. 29, 2023

Installation & Testing Series Videos of NGH GF60i2 Engine

----Engine Testing


Welcome to the teaching video series on installation and testing of the NGH GF60i2 engine. In this episode, we will introduce engine testing.

This series of videos is suitable for NGH GF60i2 Engine, support custom service, welcome to contact us.

Test bench placement requirements


The test bench needs to be horizontally fixed and can be fixed on the iron platform or ground using fixtures and bolts. If tested off site, counterweights or weights need to be fixed.


Preparation before start the engine


The red emergency switch is the ignition switch, and when pressed, it is in the "ignition off" state. At this time, the igniter is powered off. When it pops up, it is in the "ignition on" state, and the igniter is powered on. Before starting the engine, it is first necessary to confirm that the ignition switch of the engine is turned off.


Note: In case of emergency during the test, press the red button to shut down the engine.


Open the fuel tank cap, pour the mixture of gasoline and engine oil at a ratio of 35:1 into the fuel tank, and close the fuel tank cap.


Attention: Before engine testing, it is important to ensure that no person are near the testing area, especially in the propeller area!


Start Engine Test


Before ignition, it is required to inspect the electric starting and oil circuit.


Confirm again that the ignition switch is in the 'off' state.


Close the choke.

Using a handheld starter, quickly move the propeller to suck fuel from the fuel tank into the carburetor.


Attention: It is not advisable to inhale too much fuel, as excessive fuel can submerge the spark plug and cause difficulty in starting the engine.


Open the choke valve of the carburetor.

In the software, click the TT button to clear the thrust and torque, and click "Unlock" , adjust the throttle to 20%, with a throttle opening up to 20%, and click "Record"


Rotate the ignition switch to eject, and it will be in the "ignition on" state.

Start the engine using a handheld starter, and the engine will start working. The personnel who start the engine should leave the testing area as soon as possible.

At this time, the carburetor can be adjusted according to your own needs.


Adjusting the carburetor


Let’s introduce the carburetor briefly.

On the engine carburetor, the oil needle labeled "H" is a high-speed oil needle while the oil needle labeled "L" is a low-speed oil needle.


First, adjust the high-speed oil needle: turn the throttle to the maximum position, adjust the high-speed oil needle, watch the change of the Tachometer, adjust the engine speed to the maximum value per minute, and make the engine work at a stable high-speed state.


Note: Do not let the engine run lean for a long time, as it will cause significant damage to the engine.


Then adjust the idle oil needle: return the throttle to the idle position, adjust the idle oil needle, watch the change of the Tachometer, and let the engine run at a stable idle speed of 1300rpm. If necessary, make joint adjustment with the idle mixture adjusting screw to ensure that the engine idle speed is stable and the acceleration is smooth.


Data Testing of the Engine


After the engine runs smoothly, the engine speed can be controlled by increasing or decreasing the throttle.


For instance, gradually increase the throttle from the idle position until the speed approaches 3000 rpm, maintain the throttle, and the software will continuously record the test data under the 3000 rpm. We can test the test data of the engine at different stable RPM speed states.


Complete the test, stop and turn off the engine


After the test is completed, please adjust the throttle to the "idle" position, that is, gradually reduce the throttle to 0%.

Press the ignition switch to set it to the "ignition off" state and turn off the engine.


Attention: If the engine undergoes long-term grinding, it is necessary to put the throttle in the "idle" position and run for a few minutes. After the engine cools down, turn off the ignition switch. Disconnect the power supply of the starting motor to ensure the safety of the testing area.


Preliminary testing of the NGH GF60i2 has been completed.


Thank you for watching the engine testing video!


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