Lincoln Weldanpower 225 G7 Onan engine

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Hello,I have a Lincoln Weldanpower 225 G7 with the Onan twin cylinder engine. I have used this and other similar welders for years and love them for portable jobsites here in Oregon. I have very weak to no fire. I had the coil and condensor checked, they are fine. I have changed coils and still no fire. I have an inline spark plug tester and the only spark I see is when I first hit the start switch and when I let off. Does this machine have points? Where are they? Does it have a Magnito? Where is it?  The only thing I can find behind the flywheel is a plastic coated box with two wires. the only points I see are attached behind the front panel. I could use any and all help I can get. Thanks,  Mike
Reply:There should be only 1 coil and 1 trigger, the trigger is under the flywheel and senses the position of the crankshaft . Very popular problem on these units.
Reply:Here's the troubleshooting procedure for the ignition system and module beyond your spark plug test:4. Connect a jumper lead directly from the positive battery terminal to the positive (+) coil terminal (smaller diameter of the two threaded posts). Crank engine over while watching for spark. If spark occurs, the problem is in the low oil pressure cut out switch (if equipped) or related wiring, the lubricating system (low oil pressure), or in the other circuitry bringing voltage to the coil. If no spark occurs, go to step 5.5. Connect positive side of voltmeter to negative (-) coil terminal (larger diameter of the two threaded posts) and negative side of voltmeter to engine ground. Turn key on and rotate flywheel slowly by hand while observing voltmeter. Voltage should switch between battery voltage and 1-1.5 for each revolution. If voltage does not switch properly, replace ignition module.CAUTION - Never put B+ lead to the coil negative terminal. This will cause failure of the electronic ignition module.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!