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Lawn mower wont start possibly flooded the engine
Experienced gardeners share their insights in answering this question :
Make sure you have a good clean and dry spark plug

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Often your nose can make the diagnosis: Flooded engines reek of unburned fuel. Park the mower on level ground, and wait about 15 minutes for the gas to evaporate. Then try starting it again, with the choke off.
Too Much Fuel

Most commonly a result of improper starting, “flooding” results from various causes, including over-priming, closed choke, stuck valve, gummed carburetor, or immediately trying to restart an automatic choke engine. The easiest way to tell if your engine is flooded with gas is to remove the spark plug.

To fix a flooded engine, you basically want to get the air to fuel ratio back to its usual balance. You can first try to simply let the excess fuel evaporate. Open your hood and wait a couple minutes before you try to start your car again. And when you do start it back up, make sure you aren`t pushing on the gas pedal.
In worst cases, the excess fuel can foul spark plugs, sometimes necessitating their cleaning or replacement before the engine will start.
If the car doesn`t start after 15 seconds, stop and wait a couple of minutes, to let the starter motor cool down, and crank again. If you just continue cranking past 15 seconds until the engine starts or the battery dies, you may overheat or damage the starter.
When your engine is flooded it means that there`s too much petrol and not enough oxygen in the engine. This makes the spark plugs wet and they won`t ignite the fuel. If you`ve only just moved your car a few metres, it`s very common that it won`t start immediately.
Your lawn mower turning over but not starting due to several reasons, such as a faulty or disconnected plug, a disconnected spark plug wire, a clogged air filter, or a contaminated fuel tank. A faulty carburetor, a dirty cutting deck, or a dysfunctional flywheel brake can also cause this.
When trying to start a flooded engine, the end goal is to re-establish the fuel-air balance in your vehicle. To do so, simply open the hood of the car and let the excess of fuel evaporate. After waiting for some minutes, try starting your car again, keeping your foot away from the gas pedal.
If your engine is flooded with too much fuel and not enough air, your engine`s spark plugs may no longer be able to ignite the mixture, causing you to lose power. Fortunately, fixing a flooded engine is a pretty simple process, but it can be an irksome inconvenience—one that`s easily avoided with the proper know-how.
Carburetor flooding is a common problem faced by many car owners. When too much gasoline enters the carburetor, it overflows and leaks out, causing a dangerous situation where a simple spark can ignite a fire. In this article, we`ll explore the causes of carburetor flooding and how to prevent it from happening.
Your lawn mower turning over but not starting due to several reasons, such as a faulty or disconnected plug, a disconnected spark plug wire, a clogged air filter, or a contaminated fuel tank. A faulty carburetor, a dirty cutting deck, or a dysfunctional flywheel brake can also cause this.
Repair for flooding

As soon as the lawn is dry underfoot (this could take several weeks), aerate it by going over it several times with a core-type aerifier. Repeat the process in early September and again the following spring. Overseed after aerating, or delay seeding until mid-August through mid-September.

Your lawn mower turning over but not starting due to several reasons, such as a faulty or disconnected plug, a disconnected spark plug wire, a clogged air filter, or a contaminated fuel tank. A faulty carburetor, a dirty cutting deck, or a dysfunctional flywheel brake can also cause this.
Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas. If this doesn`t work, you might need a new fuel filter.

Discover Relevant Questions and Answers for Your Specific Issue

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I have trouble starting a toro walk behind mower
ANSWER : All, I thought my carb was shot, so I replaced it. Still, start but no run (and had to use starting fluid). THEN!!! I noticed the spring to the “rev limiter” (just below and towards rear of carb) was not “tight”. The stupid bracket that holds the end of that spring had been bent down ~1/16″ and that caused all this heartache. CHECK YOUR REV LIMITER!!!

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Why wont my mower start and gas comes out of muffler
ANSWER : Carb is flooding out ether bad plug or your carberator needs rebuilt

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<!– from fixya rte –>Rj19lm plug gap for a 195cc 4cyl lawnboy – Lawn-Boy lawnboy" Mower Blade 21"
ANSWER : As a starting point in my shop i always use 0.30 in. For all my mowers

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Wont start no ignition put new plug in and fuel filter
ANSWER : Flush gas tank, fill with fresh gas and Stabil. Replace air filter. Remove bowl from carb clean bowl and holes in bowl screw.

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Lawn mower cranck but wont start…
ANSWER : Since you already checked for spark and air I would drain all the fuel out of it and check that fuel for water. Over time some lawn mowers end up with contaminated fuel. You can see the water sitting on the bottom of the fuel if you let it stand for a bit in a small plastic bowl.

Be sure to empty and dry out you fuel can as well. Especially if the mower stopped running right after a refuel. Which is a good sign your gas can is contaminated too.

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MY POULAN PRO 6.5 WONT START….nEED TO REPLACE SPARL PLUG BUT DO NOT KNOW ‘right one”..
ANSWER : Take the old plug out, any auto store should be able to match it up.

Gary

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Bosch electric lawn mower wont start, how do I fix it?
ANSWER : Cable damaged …renew cable . ..if does not work try condenser.

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Brand new electric power Weed Eater lawn Mower, started up like a champ, started vibrating and was loud, shut it down, now it won’t start. Checked the extension the outlet all seems fine. Didn’t even use it yet. Why will it not start?
ANSWER : Battery no good from factory bad battery connection maybe put together on a Monday or maybe battery internal charger no good

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