Watts Onan Portable Generator - 4000 , Model# 5500 Logo
Posted on Feb 07, 2010
Answered by a Fixya Expert

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ONAN GENERATOR STARTS THEN ONLY RUNS WITH CHOKE ON

1 Answer

Anonymous

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  • Master 1,036 Answers
  • Posted on Feb 07, 2010
Anonymous
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Joined: Dec 15, 2007
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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.

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Mar 23, 2009

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.

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Anonymous

  • 116 Answers
  • Posted on Apr 17, 2009

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.

mamicheddy

mamicheddy

  • 79 Answers
  • Posted on May 09, 2009

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.

mamicheddy

mamicheddy

  • 79 Answers
  • Posted on May 09, 2009

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.

Anonymous

  • 134 Answers
  • Posted on Nov 11, 2010

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

Are you getting any kind of voltage output at all?

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