I just purchased a Generac Model XG8000E Portable Generator. The engine continues to 'surge' after warmup and the choke is pushed all the way in. The main issue however is that it is only producing about 95 Volts @57Hz on both legs and does not vary much even with the engine surging. I checked the Volts/Hz using a KILL-A-WATT meter. This seems to be a common problem with this generator. What steps can I take to get it working properly?
The manuals below will help with this question. PG 122 of the service manual will start the flow charts for this problem. www.arcolawn.com is who I use for parts. They ship fast and are super helpful. Material Number Manual (PDF) 0H4099 EV C/PNL 410 XG PORTABLE 6.5KW0H5145 WD SD 8.0KW XG ES 0J1587A EV XG8000ES 49ST 0J2873 EV XG8E 410CC 0J4651 MANUAL LOWES XG8000E 0J3335A WARRANTY STATEMENT EMSN E1 P3
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SOURCE: Coleman generator OHV3000
The carburetor is probably clogged up. Mix a bottle of carburetor cleaner with the gas to see if that would help. Also check/replace the fuel filter.
SOURCE: 20KW Guardian Generac does not produce 12 volts to run engine
The problem is that the printed circuit board inside the generator draws a little current from the battery even when the generator is not running. Over the course of a few days this can make the battery weak enough to be unable to get recharged by the built in running charger which results in not enough power to run the electronic governor on the generator. Usually the spark plugs will work even with a fairly low battery.
Most of the Generac generators come with a built in trickle charger that runs off of the transfer switch load terminals. If your built in charger isn't doing the job it's either broken or you have the wrong sort of battery installed in the generator.
Regards,
Carl
SOURCE: I have a Generac portable generator 5000 watts, won't start!
I am assuming the generator worked fine before the oil change. Now that you have done the oil change the genset does not start. These generators have a safety switch, which is basically an oil pressure switch that keeps the engine from running when there is not enough oil in the engine. Make sure that there is enough oil and if there is, look for a wire that runs along side of the engine to a round component. disconnect that wire and try starting. If it does not start then try to ground out the wire to the engine block. If this does not work, then there is other engine problems.
SOURCE: Generac portable generator doesn't produce power
Remove front cover on the genset and you will see the brushes and rings. Clean the rings if black with emory cloth and inspect brushes. Flash the fields by apply a 12V battery to the brushes. the brush closest to you or the bearing is connected to the positive side of battery and the back brush is negative. You have to do this with genset running. You should notice your voltage climb up to over 50Vac maybe even over 100Vac. Make sure to use rubber gloves when flashing fields and keep hands away from rotating parts. if voltage does increase when flashing the the voltage regulator is shot. If voltage does not climb then you will need a new genset or generator end.
SOURCE: black max 7kw generator high voltage output
Those voltage readings MAY be normal.
The AC waveform may cause your meter to read inaccurately. You would need to use a TRUE RMS meter to accurately read the voltage.
The siple meters actually read the AVERAGE voltage and then are calibrated to mulltiply it by the "form factor" for a sine wave. OFTEN these generators don't produce a clean sine wave. A square-ish wave will read higher on the garden variety meters.
Compare the brightness of a lamp comparing to when run on your utility.
The frequency depends on engine speed ... yours is running a bit fast...check it under at least half load and if off, adjust the govenor slightly.
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