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

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ONAN GENERATOR STARTS THEN ONLY RUNS WITH CHOKE ON

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  • 1,036 Answers

Hi,
This sounds like a problem with fuel settings or dirt in the jet.
If you can find the carb adjustment screws, with it runing on full choke - screw it in fully untill it stalls, then back out to original position, then restart.
Take off choke and adjust setting untill it runs well when warm with choke fully out.
You can then try and make it run leaner without stalling.

Posted on Feb 07, 2010

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Posted on Jan 02, 2017

  • 1 Answer

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

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

erickg
  • 116 Answers

SOURCE: Oil type for Onan 4000 generator

SAE 15W-40 is what i used to use
synthetic? not sure about that one there may be oil pres switch that could give you a problem.

Posted on Apr 17, 2009

mamicheddy
  • 79 Answers

SOURCE: Onan 20K Generator runs constantly in stand by mode

Your remote start wires going into your transfer switch are closed, which means you transfer switch is the problem.

Posted on May 09, 2009

mamicheddy
  • 79 Answers

SOURCE: Only runs if I hold the start switch

The problem is that you are not creating voltage. Remove front cover. Place a volt meter on the breaker. Start genset and you will see no voltage present. The problem could be with the brushes, rings, rotor, stator, voltage regulator, or control board.

Posted on May 09, 2009

  • 134 Answers

SOURCE: Onan generator: Pro 6000e: engine runs, no

Are you getting any kind of voltage output at all?

Posted on Nov 11, 2010

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