Did some more tests today using a filtered power strip and a Craftsman Professional Digital Multi-meter with hz function.
No load volts 112 at 296 hz,
watt load 107.8 volts at 137hz
Using a analog clock:
No load, watch elapsed time 60 minutes - analog clock 72 minutes
watt load, watch elapsed time 60 minutes - analog clock 72 minutes.
I then realized a had "Kill A Watt Meter that also read hz. These reading did not have any distortion.
No load 69.8 hz
1500 watt load 68.6 hz
My questions now are:
do I slow down the engine to obtain 60 hz? (per the manual that is what you have to do to lower hz).
Will it lower the output voltage since the manual states to increase output voltage you need to increase speed even though it did not on this generator.
Could the voltage regulator be defective being the cause for having a output voltage of only 110/112 vs the normal 120, or are there any suggestions for increasing the voltage.
Thanks for any input.