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Get the wide open throttle set at 65 hz, lock it down with jam nut. Load it up with everything you have as long as possible. Change fuel filter first. After good load test change oil and filter. Check coolant for sca/dca. Add stabilization to fuel tank, keep tank full to mitigate moisture. Check...

https://youtu.be/dCZhFFdPovg i dont know if the sound comes thru the same but here is mine running for a test for another ss member

https://www.steelsoldiers.com/showthread.php?178809-MEP-805B-no-power-to-the-ADC100-Electric-Actuator/page2 sorry for so many post. i can type easier with one hand on my phone

The rheostats look about right. I think i would open up the wide open throttle skrew first then test the magnetic pickup. MPU control lots of things, its the tachometer for the computer, so if the mpu is off it throws everything off. Search 805b mpu

wide open throttle should be 65hz

dont trust hour meters, i edited previous posts, reread.

Looks like wide open throttle skrew has been dinked with, might check that also please ground genny while working or operating and test magnetic pickup while in there

go Ez when adjusting, rheostat only goes from 7 thru noon to 5.

Did you read the thread i posted starting at post 43?

805b wont throttle up, it will sound the same at 1kw as it does at 33kw. engine speed only adjusts hertz,

start at post 43

read that link, i dropped a pickup on my hand so i cant type.

https://www.steelsoldiers.com/showthread.php?164332-2-MEP-805B-oh-the-joys&highlight=