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

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6.5KW Onan generator. wont run when the start button is released

Generator runs fine as long as the start button is released, but shuts off immediately as soon as the button is released. Big dollars to get service is there a simple solution and where does one get service manuals

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  • rajones2 Mar 21, 2009

    6.5KW Onan generator. wont run when the start button is released
    Low oil press switch is ok, 2 brushe look good, clean 2 rings for the brushes, check all connections, How can I test the 2 cards?


    rajones2@verizon.net


  • Thomas F. Schneider May 11, 2010

    Her the download site to get the manual from.


    http://www.cumminsonan.com/cm/support/ma...

  • Anonymous Mar 31, 2014

    generator starts easy but then stopd, It will run if you plug something in. but will not idle. overload button is always on.

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Flight systems can test the onan circuit boards. google them they will come up. First class operation my board was was checked out and back to me in about a week, They also sell new boards and deduct the 20 dollar bench fee if yours is bad and you buy a replacement from them.

Posted on Mar 23, 2009

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