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Date: Sun, 07 Oct 2012 14:44:13 -0700
From: Bob Hatch <bob.ha...@ymail.com>
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Subject: Re: I have a Onan 4000 GenSet problem.
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On 10/7/2012 9:45 AM, Albert wrote:
> I have a Onan Microlite™ 4000 Series that I've had a problem with.
> When I first bought my 2003 Holiday Rambler I chose not to have it
> generator prepped because I got to figuring if I put a generator
> onboard I would lose quite a bit of storage space. So I decided to go
> another direction when I bought the generator. Which is shown below (
> http://www.lasonwebpage.com/Camping_Stuff.html ). As an added feature
> of this configuration I can use the generator for auxiliary power
> anywhere I can take to pick up by rigging up a battery hookup
> receptacle on the pickup.
>
> Every six months I start and run it for about an hour and then put it
> back in storage.

I don't think that's what Onan says to do. What does your manual say? 
Mine says 2 hours per month under 1/2 load.


  About a week ago I pulled it out and it wouldn't run.
> I was getting a fault that indicated I should check my fuel level in
> the tank (in other words out of fuel). I knew I had fuel and the
> generator would start but only run about 30 seconds and then I would
> get a shutdown fault indicating I wasn't getting any fuel.
>
> So I pulled the fuel line off the carburetor and hit the primer
> pre-start on the switch and had plenty of fuel. I change the spark
> plug and fuel pump that didn't help. Out of frustration I took it down
> to Cummins to have it checked out and they had to put a new carburetor
> on it and they told me that the carburetor was varnished up. I brought
> back the old carburetor and sure enough it was.
>
> Now, it was explained to me that when I winterized the generator that
> I should have run all of the fuel out of the carburetor which
> unfortunately I did not so from now on I will disconnect the fuel line
> from now on and do just that.
>
> Because I'm using an outboard motor fuel tank it's easy for me to
> disconnect the fuel. But if this generator were mounted say in a
> motorhome it would probably have to have a fuel tank shut-off valve,
> I'm just guessing. The generator itself does not have one.
>
> Anyway, I just thought I would pass this along so maybe someone else
> will not make the same mistake I did to the tune of $455 :-(. On the
> bright side I did clean the varnish from the old carburetor so I now
> have a spare carburetor and fuel pump.
>
> Albert
>


-- 
I do not carry a gun hoping that
I'll be able to shoot someone, anymore than
I carry a jack hoping I'll have a flat
tire.
    Me.