Small Engine Troubleshooting Problems? Ask a Mechanic Now.
How long it will run depends on many factors. There is no set time.
If the unit has been well maintained, and the engine is tight, it could run for weeks.
If the unit has not been well maintained, and the engine is worn out, it might need to be topped off with oil every day.
I recommend shutting it down and checking the oil at least every day, if not every 12 hours.
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