Generator is stalling
Not knowing your model # and how old your generator really is - as
related to TOTAL RUN HOURS - I can only give you several possibilities
of what the problem might be even though I don't know the make &
model and what the rated WATTAGE output is.
I also don't know what LOAD you are putting on the Genset or at what
RPM you are running the engine at as to half throttle or full throttle
setting?? I take it that it's a Briggs & Stratton 4-stroke single
cyl, or is it a Honda 4-stroke single/twin cyl engine?
Since it runs good for 30 mins, and then starts to cut out - I doubt
that the OIL is a problem even though you ran straight 30 weight -
seeings most small engines run 10-30 weight oil as a rule.
I seriously doubt you did any damage to the engine at all unless it was
ran low on oil - in which case it should have a LOW OIL cutoff switch
mounted in the lower engine case close to the CHECK OIL port.
If the LOW OIL switch is working properly and adjusted properly then
you shouldn't be getting cutout unless this switch is mis-adjusted.
(ie: mechanically set too low as then when the oil level is indeed at
it's proper level the switch would be already shorting out to ground)
(See your operators manual for proper setting)
A way to check for proper operation is to temporarily disconnect the
(usually) BLACK wire from the LOW OIL switch when the engine starts to
cut out. If the problem goes away completely then the LOW OIL switch is
either mis-adjusted or else it is going bad from vibration. (Again see
your operators manual for proper adjustment and/or check out procedure)
Electronically this LOW OIL switch should be the only thing that would
protect the engine from damage should the oil level fall below
recommended level. Other then that it may have an electronic REV
LIMITER if it's a bigger and more expensive model, but usually not.
I doubt the Maintenance-free Magnetron® electronic ignition is at
fault, but could be weak and going bad. Always a possibility, but I
would 1st rule out everything else first. Since the Genset runs for 30
mins and then starts to cut out I would look more for like a fuel vapor
lock (partially closed or clogged gas cap vent), a possible dirty fuel
filter, possible water moisture in the gas tank or in the carb bowl,
possibly dirty carb in general along with it's dirty Float Bowl, Float Pin, Float and Needle Valve, and any Adjustment Screws that go Into the Carb Body. That covers everything from a fuel standpoint.
You do know that all Gensets should be started and run for at least 10
mins every 30 days - right? If you didn't know this - now you do! Every
good operators manual should state this.
It just doesn't sound like it's starving for gas unless it's building up a (vacuum) or vapor lock in the gas tank.
Having covered everything from an Electronics/electrical standpoint
engine wise - there is only one other thing left Genset wise.
What it really sounds like to me (and I personally HAVE SEEN this
happen myself firsthand) is that the generator brushes are nearly shot
- as in almost worn out. They may be getting too too hot - as from
excessive current draw at point of contact, and thus the generator
sensing circuitry itself is doing an electrical CUTOUT!!
An added protective Genset circuit feature in that the generator itself
may indeed be linked to the engine as a type of REV LIMITER on the Maintenance-free Magnetron® electronic ignition.
Again - your operators or service manual should have a pretty good
troubleshooting section in it unless you don't have that anymore or
never got one if you bought it used to begin with.
It has to be one of the scenarios listed above.
Please post me a reply as to the found problem there, and the resolve
to it by following my recommendations above. Also please rate my
troubleshooting fix as well.
Best regards and thanks,
Sep 01, 2008 |
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