Question about Watts Onan Portable Generator - 4000 , Model# 5500

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Have a onan 4000 ky series gen i pull a code 14. Wanted to see how to adjust the governor which screws to turn. Have a frequency and volt meter.

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: Onan MicroQuiet 4000 Generator

Remove the air cleaner and inside near the throat of the carb is two bolts holding the carb to the intake remove these. Unhook the fuel line and twist the carb to allow the linkages to remove.

Posted on Sep 28, 2009

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cmcduncand
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SOURCE: the onan generator will not start 4000 KY----looks

If it is clicking it may not be bad, Sight unseen. Your problem is a low battery.

R/
David

Posted on Jan 21, 2010

  • 1 Answer

SOURCE: I have an onan microquiet 4000 KY. It will not

Try dinosaur electronics for a cheaper board,
http://www.dinosaurelectronics.com/Onan_boards.htm

Posted on Jun 30, 2010

  • 16 Answers

SOURCE: By pbarker987 on Jun 02, 2010

Because it wont start does not indicate a control board problem It will start but it will shut down within a few seconds if it was. enail me and i will try to help you with the problem jbogilvie@hotmail.com

Posted on Jul 02, 2010

  • 5603 Answers

SOURCE: need to know what the volts should be on the

Typically near full battery voltage. During starting this may fall to around 10 volts due to the high current once the starter motor engages.

Posted on Nov 03, 2011

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1 Answer

I have a Kohler 7.3 ECD generator with error code UVunder frequency. Restarted gen and it ran for one hour so I shut it off. What's the problem?


check the operating rpms
the rpms determine the voltage and frequency and can be adjusted at the governor spring setting
adjust it until the voltmeter reads the required voltage
set slightly above to allow for rpms drop under load
for example if 240 volts set around 250 volts and that will drop back to 240 volts under load
if 110 set around 115 and that will drop back under full load
both frequency and volts are dependant on rpms

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My K450 onan tag along was doing this and an adjustment of the governor set screw ( voltage +/- )cleared it up.

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How to fix onan 4000 that will not stay running


Check the slips rings and brushes, check the stator and rotor windings for continuity and for shorts to ground. Check PCB plug connections. After that you need a new control board

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Need to know what the volts should be on the starter side of solinoid on a onan 4.0bfa r.v. gen.


Typically near full battery voltage. During starting this may fall to around 10 volts due to the high current once the starter motor engages.

Oct 31, 2011 | Watts Onan Portable Generator - 4000 ,...

1 Answer

Have Onan 3.6 KY propane gen that will not keep running. Runs only as long as start switch is pushed. Then stops immediately after release. Fault code is 15 (underfrequency) and suggests removing heavy...


I am not familiar with your peice of equipment but from your description of the fault being Under Frequency it appears that generator governor is out of adjustment or the governor spring has brcome weak or broken and not allowing the engine to run at the correct speed to produce an output frequency within the allowable tolerance. Governor linkage could also be binding and not moving smoothly to respond properly to engine load conditions. Thoroughly check governor and throttle linkage for free and smooth operation and full range of movement.
Another cause could be that the engine is not getting sufficient fuel causing the governor to have the throttle wide open to try to get engine to run at its correctly governed speed but unable to do so because the engine is not developing enough horse power.

Jan 10, 2011 | Watts Onan Portable Generator - 4000 ,...

1 Answer

By pbarker987 on Jun 02, 2010 " " I have an onan microquiet 4000 KY. It will not start, fault code on red light indicates (35) control card failure. Before I take it to authorized onan repair is their...


Because it wont start does not indicate a control board problem It will start but it will shut down within a few seconds if it was. enail me and i will try to help you with the problem jbogilvie@hotmail.com

Jun 23, 2010 | Watts Onan Portable Generator - 4000 ,...

1 Answer

The onan generator will not start 4000 KY----looks


If it is clicking it may not be bad, Sight unseen. Your problem is a low battery.

R/
David

Jan 04, 2010 | Watts Onan Portable Generator - 4000 ,...

1 Answer

Ginne stalls under load


Likely that your governor has creeped out of tolerance. Very common with Emerald line of generators. Try to borrow, if not already have one, a multimeter that is able to read frequency and voltage. At no load, frequency should be 62 or 63 hertz. At full load, frequency is going to be around 57-58 hertz. Voltage at no load should be 127 or so, full load should drop down to around 115 give or take. Adjust governor for faster engine operation for low voltage / frequency, slow down for too fast frequency or high voltage (though that is likely not the case here).

Problem with Emeralds is that the governor spring rubs on bracket, and also has a tendency to stretch. If this is the case, adjusting governor will be near impossible between full and no load.

Jun 10, 2009 | Watts Onan Portable Generator - 4000 ,...

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