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Backup generator maintenance question anthonymmfalcone 01-08-2007
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Posted by on January 8, 2007, 9:15 pm


Hi Readers,

I live in New York State and just bought a brand new Briggs&Stratton
5500W generator to be used in the rare event of emergency backup (i.e.
ice storm and no power for days). I've yet to add oil or gasoline,
but I have the containers ready and am comfortable doing it by
flashlight if needed. I would like to do as little maintenance as
possible on the generator (within reason) without jeapordizing it.
What's better for the engine: leave it dry and empty until needed
(maybe months or years!), or add oil and gas (and gas stabilizer) and
run every couple of months? It's kept under a tarp in the garage, but
the garage does get humid during wet weather.

All advice greatly appreciated.

Regards,
-Tony


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Posted by Bewildered on January 8, 2007, 11:29 pm



> Hi Readers,
>
> I live in New York State and just bought a brand new Briggs&Stratton
> 5500W generator to be used in the rare event of emergency backup (i.e.
> ice storm and no power for days). I've yet to add oil or gasoline,
> but I have the containers ready and am comfortable doing it by
> flashlight if needed. I would like to do as little maintenance as
> possible on the generator (within reason) without jeapordizing it.
> What's better for the engine: leave it dry and empty until needed
> (maybe months or years!), or add oil and gas (and gas stabilizer) and
> run every couple of months? It's kept under a tarp in the garage, but
> the garage does get humid during wet weather.
>
I keep mine full of gas and stabilizer and run it for 10 minutes every
month. Every 6 months I change the gas. That is optional, but the longer
you keep the gas the harder it gets to start. It has seen me through 3
major outages over 6 years.

But, I also hedge. I found a nice used generator for about a third of what
it was worth, and keep that dry with oil in the cylinder. I could make a
nice little profit by selling it, but the moment I do...



Posted by Pete C. on January 9, 2007, 8:58 am


anthonymmfalcone@yahoo.com wrote:
>
> Hi Readers,
>
> I live in New York State and just bought a brand new Briggs&Stratton
> 5500W generator to be used in the rare event of emergency backup (i.e.
> ice storm and no power for days). I've yet to add oil or gasoline,
> but I have the containers ready and am comfortable doing it by
> flashlight if needed. I would like to do as little maintenance as
> possible on the generator (within reason) without jeapordizing it.
> What's better for the engine: leave it dry and empty until needed
> (maybe months or years!), or add oil and gas (and gas stabilizer) and
> run every couple of months? It's kept under a tarp in the garage, but
> the garage does get humid during wet weather.
>
> All advice greatly appreciated.
>
> Regards,
> -Tony

Put oil in it, preferably Mobile 1 synthetic or equiv.

Hang a tag and a pencil on a string on the generator where you can note
the fuel fill date and each test run date.

Fill the fuel tank full (minimize air space for condensation) with gas
with Sta-Bil added.

Run the generator under load (a portable 1,500W heater is sufficient)
for about 30 min each month. At the end of the 30 min unplug the load
and after a couple minutes turn off the fuel valve. Let the generator
run the remaining few minutes with no load to cool off and then run the
carb. dry so it won't gum up. Top off the fuel as needed to keep the
tank full. Note the test date on the service tag.

Every 12 months, drain the generator tank into a gas can and put the gas
in your car to use it up (the Sta-Bil insures it's perfectly fine).
Refill the generator tank with fresh gas and Sta-Bil. Note the fuel
change date on your service tag.

Unless you have reliable gas sources during an outage (you'll use 3/4-1
gal per hour of run time) you should keep a couple 5 gal gas cans full
of gas with Sta-Bil as well and keep them on the same annual rotation
schedule as the generators tank.

Yes, it sounds like a lot of work, but it really isn't, and it helps
insure the generator will be ready to go when you need it.

Pete C.

Posted by HugeBob on January 13, 2007, 4:42 pm


Hi Pete,

Which generator did you go with? I've had several estimates that swung
at the extremes: low and high.
Pete C. wrote:
> anthonymmfalcone@yahoo.com wrote:
> >
> > Hi Readers,
> >
> > I live in New York State and just bought a brand new Briggs&Stratton
> > 5500W generator to be used in the rare event of emergency backup (i.e.
> > ice storm and no power for days). I've yet to add oil or gasoline,
> > but I have the containers ready and am comfortable doing it by
> > flashlight if needed. I would like to do as little maintenance as
> > possible on the generator (within reason) without jeapordizing it.
> > What's better for the engine: leave it dry and empty until needed
> > (maybe months or years!), or add oil and gas (and gas stabilizer) and
> > run every couple of months? It's kept under a tarp in the garage, but
> > the garage does get humid during wet weather.
> >
> > All advice greatly appreciated.
> >
> > Regards,
> > -Tony
>
> Put oil in it, preferably Mobile 1 synthetic or equiv.
>
> Hang a tag and a pencil on a string on the generator where you can note
> the fuel fill date and each test run date.
>
> Fill the fuel tank full (minimize air space for condensation) with gas
> with Sta-Bil added.
>
> Run the generator under load (a portable 1,500W heater is sufficient)
> for about 30 min each month. At the end of the 30 min unplug the load
> and after a couple minutes turn off the fuel valve. Let the generator
> run the remaining few minutes with no load to cool off and then run the
> carb. dry so it won't gum up. Top off the fuel as needed to keep the
> tank full. Note the test date on the service tag.
>
> Every 12 months, drain the generator tank into a gas can and put the gas
> in your car to use it up (the Sta-Bil insures it's perfectly fine).
> Refill the generator tank with fresh gas and Sta-Bil. Note the fuel
> change date on your service tag.
>
> Unless you have reliable gas sources during an outage (you'll use 3/4-1
> gal per hour of run time) you should keep a couple 5 gal gas cans full
> of gas with Sta-Bil as well and keep them on the same annual rotation
> schedule as the generators tank.
>
> Yes, it sounds like a lot of work, but it really isn't, and it helps
> insure the generator will be ready to go when you need it.
>
> Pete C.


Posted by volts500 on January 9, 2007, 8:46 pm


anthonymmfalcone@yahoo.com wrote:
> Hi Readers,
>
> I live in New York State and just bought a brand new Briggs&Stratton
> 5500W generator to be used in the rare event of emergency backup (i.e.
> ice storm and no power for days). I've yet to add oil or gasoline,
> but I have the containers ready and am comfortable doing it by
> flashlight if needed. I would like to do as little maintenance as
> possible on the generator (within reason) without jeapordizing it.
> What's better for the engine: leave it dry and empty until needed
> (maybe months or years!), or add oil and gas (and gas stabilizer) and
> run every couple of months? It's kept under a tarp in the garage, but
> the garage does get humid during wet weather.
>
> All advice greatly appreciated.
>
> Regards,
> -Tony

There is no choice in the matter! As Pete C. said, if you don't run it
occasionally _under_ load, it will eventually lose its' residual
magnetism. If that happens, when you really need the generator, it
won't put out any power (even though the engine starts and runs), then
you'll be back in here trying to find out how to flash the generator
field winding. Just starting the generator and running it without a
load it is _not_ sufficient.


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