How do you troubleshoot the voltage flickering of FG WILSON diesel generator?

Answer 1

If you can see the lights flickering then there is a good chance that the frequency of the generator is low. To increase the frequency just increase the speed of the generator. On bigger diesel engines there is a knurled knob, located on the fuel rack, that can be turned up to increase the speed. If the unit has a frequency meter check to see if it is on 60 or 50 Hz depending on what country you live in. Don't depend on the frequency meter as they are not always accurate. Use a test meter that has a frequency scale and set the generator with the meters reading.