I Onan 5000 genset plus won't start. When I push

Could be vapor locked. Prime the line and try again.

Do you have an air filter on that thing? Sounds like it's straving for air.

red and black are power or hot wires white is netrual and green ground need a little more input ,good luck

Have you replaced the solinoid too? If not, maybe the solinoid is staying engaged, which keeps your starter, well starting. If the starter stays energised the flywheel WILL tear up the starter gear.


hope this helps

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Either you have a kill wire ( if I remember it is the brown wire) that is disconnected on one end or the other Or your in coach switch is bad.
Check the switch this way

Remove the switch from the dash/ mounting surface unplug the brown wire - start the genset - ground the brown wire - it should kill the motor
If it kills the motor your switch is bad

Governor is "hunting. An adjustment should take care of it. nothing more. Take it to camping world and they know what to do.

You MAY have blown the rotating diodes on the rotor.

This would require servicing.

a 10 year old genset with only 45hrs on it...sound like the carb may need replace. working with these rv units for 6+ years has taught me that you cannot clean one well enough to fix it. you will need a new carb. your local onan dealer can help. when new the warrenty makes known that 1hr per month under load will keep the carb clean and problem free. evaporating gas leaves deposits and eventualy plug fuel jets. no replacement parts are recommended. i've personaly worked on rv's with 200+ hous and no issues at all. hope this helps, good luck...

i think your talking about the reed valve thats in the valve sping cover housing. if so it should only go together one way and the reed valve should open up. hope this helps...good luck...

1. Does the generator stay running when you start it the first time?

2. What color is the housing on this generator? Try to get the model number and serial number.

If the genset is shutting down on the first try, then your probably not creating voltage. However, if this is an older unit then the genset may stay running although no voltage is created. Place a volt meter on the genset to check for output voltage.