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generator storage

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Posted by jack on July 27, 2009, 7:22 pm
question on 3 year old generator (self-starter, battery equipped) stored unused
for 3

if unit was stored drained from fuel, is there anything detrimental to the
assuming it was brand new, used for 60 to 90 minutes and then fuel was drained
item stored ? the battery is totally dead of course, but what about the
mechanical or
electronic parts?

oil sat for 3 years but is not colored dark, likely it would contain some
moisture but
would it deteriorate just sitting?

anything else that I am not asking, but should ask ?

Posted by Steve Stone on July 27, 2009, 7:58 pm
jack wrote:

Depending on the storage location mice can wreak havoc.
You might have to re flash the field...


Field flashing is used when the exciter poles of generator lose their
magnetism and will not allow gen set to build voltage.. This sometimes
happens if a machine has not been run for long periods of time. To
rectify this problem we use a 12vdc battery to repolarize the exciter
poles by applying voltage to the exciter circuit directly. The gen-set
must be offline and proper polarity must be observed.. The gen-set or
voltage regulator manufacturer usually has procedure for this in manual..

Posted by vaughn on July 27, 2009, 8:09 pm

   Steve gave you a good lineup of the most common issues.  Mild cylinder
pitting is possible depending on the storage location, and a stuck valve is
also a tiny possibility.  In general, I would be optimistic that the thing
is just as good as new.


Posted by Hustlin' Hank on July 27, 2009, 8:24 pm
Depending on where it was stored, some problems you might want to
check for:

Rust in Gas tank if it is not plastic. Oil leaks from dried up seals.
The carb could have developed some moisture and be clogged. Corroded
electrical terminals.

Basically, check everything.


Posted by Van Chocstraw on July 27, 2009, 9:03 pm
 jack wrote:

I gas mine up yearly. I drain the old gas and use it in my lawn tractors
and refill the tank again. I start it and run it until it warms up good
twice a year. No problems  when I need it.

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