Preventing Your Lawn Mower from Getting Flooded?

Person pulling starter cord on a red lawn mower.
If you are having trouble starting your mower it best to not compound the issue by flooding the engine. It can be impossible to start your lawn mower if the engine becomes flooded. This is a page about how to prevent your lawn mower from getting flooded.

3 Questions

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March 25, 2015

My Bolens MTD 13.5 Briggs and Stratton engine starts, but floods out after about 2 minutes. I take it off choke after starting, but it floods out. I replaced the fuel filter, hoses, battery, and spark plug, and it has fresh fuel as well. It ran OK a week prior so I'm not sure what happened. It is a 2 year old machine BTW. Do I need to clean the carb, or replace? Thanks.

By G Hunter


Bronze Post Medal for All Time! 105 Posts
December 5, 20171 found this helpful

I would clean the carburetor on the mower. You are getting too much gas to the engine and the carburetor isn't allowing the gas to flow through. There has to be a blockage in there. You could have some dirt or sludge in there that is causing this problem.

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May 31, 20190 found this helpful

I have a bolens 15.5 Hp it w turn over but wont start get spark but nothing else get gas. But get nothing

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July 15, 2010

I just purchased a used Huskee riding lawn mower. First, it was not starting, I cleaned the gas line and filter and it started just fine, but now the carburetor floods everytime I trying to start. It seems it is sucking too much gas to the carburetor. What could be wrong? Any suggestions before I haul this machine to a repair shop?

By brij from Colorado Springs, CO


July 18, 20100 found this helpful

My husband suggested that the needle and seat are corrorded or dirty and stuck open.

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July 22, 2012

My lawn mower keeps flooding out on me. It runs fine when I unplug the hose coming from the crankcase to the bottom of the carburetor plate that the fuel line connects to. What is wrong with my mower?

By Dan

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