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I did measure the wires coming out of the MPU. I made sure the meter was working as well by testing the house mains voltage and it showed 120v. Not sure why these are both showing no voltage. I will pull and inspect just to see. Then it is a wrap for today's session.

So neither the non-starting PU or the working PU show voltage at the MPU when controlled by S1. The working unit fired up when testing and it still showed no voltage while running. I'm confused. Just making sure, this is the MPU, correct?

Yes sir I am. I will give that a go and see what it turns up.

I looked in the -24 for the MPU. Before I was going to undo it from the flywheel, I want to make sure I got a Voltage reading at the terminals 3 and 6 of the disconnect switch in the control panel. I'm 99% positive that I found the right location (see pic) , but I don't get the voltage...

Thanks for the suggestions. Yes, the fuel solenoid does move the full length when in the Start position and stays when moved to Run. It then moves when turned to Off. I will look for the L4/MPU and see what I discover there.

Hi SS, I have purchased a PU with dual 803's. The first I did oil/fuel/filters/hoses/batteries and it started right up. This unit started and ran in the auction. The second unit was "non-running" as the fuel lines were too rotted. I replaced the lines/oil/filters/batteries and tried to...