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Old 05-28-2008, 12:28 PM   #1
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I have a Kohler 7CCKMR61 Generator and it is suffering from low AC voltage output. I am currently reading 95 AC Volts at 1800 RPM. I removed the panel for the circuit breakers at the generator and read the line voltage at the generator itself. These are the readings from the generator. I get the same voltage at the AC outlet when I throw the generator switch on.

Question: How does one go about increasing the AC voltage on this generator?

On Edit: Changed RPMs to AC Voltage
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Old 05-28-2008, 12:28 PM   #2
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I have a Kohler 7CCKMR61 Generator and it is suffering from low AC voltage output. I am currently reading 95 AC Volts at 1800 RPM. I removed the panel for the circuit breakers at the generator and read the line voltage at the generator itself. These are the readings from the generator. I get the same voltage at the AC outlet when I throw the generator switch on.

Question: How does one go about increasing the AC voltage on this generator?

On Edit: Changed RPMs to AC Voltage
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Old 05-28-2008, 04:28 PM   #3
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You may NOT have a 'speed' problem. You need to measure the frequency as well. The voltage adjustment on my kohler konfidant is located behind the 'visible' panel in the genset. You may have to remove the mounting screws to get to the pots(potentiometers) .

cheers.
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Old 05-28-2008, 05:03 PM   #4
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by hamdave:
You may NOT have a 'speed' problem. </div></BLOCKQUOTE>Sorry, I don't know why I put speed down - I meant to say Volts
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Old 05-29-2008, 04:36 AM   #5
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Unless that is an inverter type generator (unlikely in that vintage) both frequency and voltage are dependent on an exact speed (RPMs). Typically in a gas generator the speed will be 3600 RPMS, but you said yours is running at 1800 (but perhaps geared to drive the armature at 3600?).
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Old 05-29-2008, 03:51 PM   #6
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1800 rpm is one of the speeds generators use, they just double the number of poles. It is a much quieter genset than the 3600 rpm models, the only drawback is heavy loads fluctuate the voltage easier.
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Old 05-31-2008, 05:59 PM   #7
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Onan has some models whose engines run at 2400 RPM that belt drive the alternator at 3600.If the the subject genset is one of these,then the revs need to be increased to increase the voltage to a usable level.In any event,use an electric clock to check hertz(RPM)
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