The oil pressure cut off circuit and the engine will run only if the button is pressed in. When the start button is pressed it bypasses Before doing anything, verify your model number and specifications)Īlso, check the oil level first - There is an oil pressure sensor that shuts down the genset if the oil pressure drops. Therefor this article is intended for general information Have different specifications and wiring connections. (WEBMASTER COMMENT: this information is specific to the model listed - your particular model may The problem was engine would start but quit as soon as the start button was released. Try and use this information to assess your problem.)
The information below will only make sense and or apply to my specific case so don't let that confuse you if you (The following is a compilation of several e-mails between myself and Alan regarding my genset problem. The following information was provided by Alan Robinson a Cert. Onan BGM, NHM Series Owner's Manual Onan Generator Troubleshooting - contributed by Mickey Mathias. This section will add to that list so you have plenty of areas to look at to figure out what caused the problem.Diagnose Onan Generator Problems Onan Manuals (.pdf files) The previous section only lists some of the problems that can cause your generator to malfunction. Onan 4000 Generator Will Not Stay Running In the end, if these simple fixes do not work, contact an Onan technician to have him help you diagnose the problem. Lessen the load and you should be able to use your unit with ease. Many modern generators are now designed to shut down if they are overloaded. If neither has been changed in a while, they may be the source for your inability to keep the generator running.įinally, check to see if the generator is overloaded. Or you can replace the fuel filter or clean it.Īfter these two areas check out or are fixed and you still have the problem, check the air filter and the spark plug.
Both of these sources are easy fixes as you can plug the holes with duct tape or replace the fuel line.
While you are at it, check the fuel line to see if it has sprung a leak. This can get dirty and cut down the flow of fuel to the motor. Fill the oil tank to remedy this problem. Onan generators are supposed to have a low oil shut-off mechanism that will turn the engine off when it detects that the oil levels are too low. One source may be that the oil tank is low. Space won’t allow us to present every issue that will create this situation.
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