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72 amps X 240 volts = 17,280 watts = 170% of rating. Are your lamps running on 240V? If they're running on 120, you'll need one on each of the two 120V legs to provide the load at 240. Also, you need to check the load with some kind of ammeter of known accuracy to verify it. Just because the...

All good points, except I don't think you'd want to try an impact wrench. It would overtighten the blower nut because of the impacts, rather than turn the engine much.

Excellent, I'm glad you got it going.

The oil pressure has to be high enough to make the low pressure shutoff switch close, and the high temperature shutoff switch has to be functioning correctly (closed) and the wiring to these switches has to be intact. Then when you do as Jerry above said and hold the switch in the start...

What viscosity oil is in it?

Looking around the web a little, I guess the hard part is finding a pump while retaining all one's body parts.

Deleted - already covered.

No, I worded that poorly. I meant it is definitely an Onan, and so I figure it's some sort of variant of the MEP-003A engine.

Nice new starter, but on the blower end. I see "Onan" on the block, so it must be a variant, but not an MEP-003A engine.

It appears that your generator is configured for 240/416, since within a small tolerance, that's what you're getting. It needs to be reconfigured for 120/208, but sewerzuk or someone else who has experience with that unit will have to explain. After that, you'll be getting 120 from each leg to...

I like to put a layer of grease in the joint when reassembling after cleaning. It keeps water and acid fumes out and makes the connection more reliable.

As I understand it, the MEP-004A can be configured for 120/208 3 phase operation. When it is, each leg is 120V to neutral, and it's 208V between legs. If you connect two legs to your two 120V house inputs, and neutral to your house neutral, you'll have 120V at all your 120V outlets, and 208 on...

Well, close to 10k anyway. :-D

I came across a thread on Smokstak about US Motors, with some clues about the current status of the company: http://www.smokstak.com/forum/showthread.php?t=14900 Also, there appears to be a German manual on it...

This looks like an actual motor-generator set, maybe to make a lot of 120V single phase current from 3-phase service.

If it makes you feel better, I don't leave tools on my MEP-003A while it's running for the same reason, and four cylinder engines are inherently smoother running than two cylinder engines.

I don't know that particular clip, but if it's just a Jesus clip, you should be able to match it up to something McMaster-Carr stocks.

Frequency can't change if the RPM does not change, because they're tied together. The four-pole alternator is directly coupled to the engine, so you get exactly 60 Hz AC when the engine is running at 1800 RPM. If the AC frequency is changing, then the engine speed is changing.

Just a shot in the dark, but starting with the simple things, a bad ignition condenser could cause very weak spark. Dirty or pitted points could also. I don't know how many models of Wico mags there are, but I've gotten them cheaply for my Gravely mower from eBay. Maybe if something in there...

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