no dirt or water I cleaned the points and yhe float is working good plenty of gas in bowl but I even sprayed sterting fluid in carb and still want start do u think that the saftey thing u hold down to start is bad I tried pushing it more but still nothing im lost there has not been a mower I could not fix until no I need help
Lawn Mower With Toro Power Tools

Experienced gardeners share their insights in answering this question :
First, the deadman switch actuated by the bail on the handle is not likely at fault. Why? Because it is a critical safety feature so would be designed to not fail, or fail in a safe way. But you made no mention of release of the bail when the engine died the first time. So eliminate that. You mentioned that ignition secondary (fire) and fuel delivery checked out. So that could point to compression–as in a faulty breather, but breather fault is typically accompanied by oil clogging in air filter and throttle intake. Sometimes when an engine is not stored properly (that is, has sat without running for many weeks, especially in warm/hot weather, you could get fuel clgging of carb passages essential for starting–but not visible as per you fuel testing. Finally, an otherwise inexplicable start/run failure is often the result of a failed ignition module. Those modules are worrisome for trouble shooting because there is not practical test that will isolate them…other than verifying that all else is working okay.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.
Q. Why is my lawn mower turning over but not starting? The most likely reason is bad gas. Gas that sits for many months during the off-season will eventually break down, gumming up the fuel line and carburetor in the engine and preventing it from starting.
As the fuel level drops, a vacuum begins to form in the fuel tank because air can get in to fill the space the consumed fuel occupied. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die.
A Dirty Carburetor Can Cause a Lawnmower To Start Then Die

By far, the most common issue that causes a stalled motor is a dirty carburetor. The carburetor on your engine is the thing that draws in air and mixes it with the fuel. Contrary to what the movies might make you think, gasoline itself is not very flammable.

If you find that your lawnmower keeps dying, or keeps stalling while cutting grass, then inspect the spark plugs. Look for signs of damage or wear. Something as simple as a cracked porcelain insulator can mean an electrode has been damaged or burned away.
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.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
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.

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My toro push mower has a 6.75 Briggs and Stratton it was running great and it died iI checked for fire and it has fire I cleanded the carb bowl no dirt or water I cleaned the points and yhe float is working good plenty of gas in bowl but I even sprayed sterting fluid in carb and still want start do u think that the saftey thing u hold down to start is bad I tried pushing it more but still nothing im lost there has not been a mower I could not fix until no I need help
ANSWER : First, the deadman switch actuated by the bail on the handle is not likely at fault. Why? Because it is a critical safety feature so would be designed to not fail, or fail in a safe way. But you made no mention of release of the bail when the engine died the first time. So eliminate that. You mentioned that ignition secondary (fire) and fuel delivery checked out. So that could point to compression–as in a faulty breather, but breather fault is typically accompanied by oil clogging in air filter and throttle intake. Sometimes when an engine is not stored properly (that is, has sat without running for many weeks, especially in warm/hot weather, you could get fuel clgging of carb passages essential for starting–but not visible as per you fuel testing. Finally, an otherwise inexplicable start/run failure is often the result of a failed ignition module. Those modules are worrisome for trouble shooting because there is not practical test that will isolate them…other than verifying that all else is working okay.

Mower won’t start. Toro mower..engine won’t turn over. Cleaned sparkplug…checked air filter..weather cool. Followed instructions for cold engine…prime witrh three pushes of the bulb..wnon’t even hint at a start..
ANSWER : Something everyone over looks is oil. Did you check the oil? You seemed to mention everything else but. If you have a low oil switch with low oil it will not start

My Toro mower with a Briggs & Stratton engine starts and then cuts off after a few seconds. How do I fix this?
ANSWER : If it starts on choke and then stops may need to clean out carby and fuel tank

I have a 2 year old Toro push lawn mower that will not start. Everything has been tried: new plug, new gas, new air filter, even tried starter fluid. There is not even a sputter.
ANSWER : Try an few of these :http://www.fixya.com/support/r8406168-top_10_lawn_mower_problems_solutionsgood luck Joe

Lawn mower will start and run for 5 seconds and shut down
ANSWER : Will it stay running with your choke on? if so then clean your carb. if not then look for a blockage from tank to carb. ie fuel shut off, deteriorated fuel line. plugged filter etc

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

My toro 6.5 hp push mower (2010), has no fire to the plug. I have not abused it. i have a small yard and it just gets normal use. Now it won’t fire. I first changed the fuel and cleaned the carb thinking it was that crappy ethanol again. but i grounded out the spark plug and cranked it…no spark. I think it has to do with the lever you pull back to start it . they have some stupid complicated safety contraption that rides along the fly wheel when you pull back on the handle for starting and shutting off the engine. …it looks worn out already…like a mini brake pad. any ideas?…do i really have to replace this garbage every year or am i on the wrong path here?
ANSWER : Unhook your wire from the coil that goes to shut off mechanism, and see if you have spark then. the wire may be grounded out, or your coil might have took a ****

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!!!