Your mower engine has to have these things WORKING to run: 1. Compression (engine in good shape) 2. Strong Spark (magneto air gap has to be correct for strong spark) 3. Clean air ( good, clean air filter w/no air leaks) 4. Clean, fresh fuel supply (gas less than 30 days olds with an inline filter installed in mower's fuel line). These things are assuming the mower hasn't struck an immovable object such as concrete, tree stump etc. recently. This will shear the flywheel key and timing may be off so far that engine won't start. So, where would you like to start my friend? Try checking these things. In the meanwhile....we can try to "coax" the engine into running. Remove the spark plug. Get an aerosol can of carb/choke cleaner spray. Spray a couple of shots into the engine. Reinstall plug. Choke the carb and attempt to start. This may or may not work, according to the conditions listed earlier. If this doesn't get it running, remove the plug and try it again.
We are trying to get it to run on its own, so it will start (or attempt to start) drawing fuel from the carburetor. Sometimes the brass bolt that holds the carburetor float bowl on gets clogged. You drain the gas, remove the bolt and clean all the small hole in the bottom and along the sides of it. This bolt is also the main jet of the carb. Cleaning this with carb cleaner can only help. If you do this, use NO metal objects to poke or scrape the bolt. The holes are metered and have to stay that way. Check for spark, check your air filter, see if the plug gets wet after you attempt to start. If it doesn't get wet or even smell like gas, then likely you have a fuel flow problem. Try ALL these things and post back; and again, if you have hit something solid recently with the mower, you will have the replace the flywheel shear key. It is a small aluminum $1.00 part so don't worry. Post back as needed. We wish to help.
SOURCE: I have a 2006 Toro 6.75 hp GTS lawn mower. I am
Your carburetor needs cleaned,you had gas in it that you drained out and replaced with new ? What engine do you have tecumseh,briggs,? Anyway remove carburetor and take apart get acan of carburetor cleaner and spray though jets in carburetor and blow out jets be carefull not to blow out needle seat !
SOURCE: I have a GTS 6.5HP Toro lawn mower it start good
Does the fuel line have a filter? It sounds like the float in the carburetor is running out of gas. Sludge builds up and the deposits on the needle seat will not let the flow of fuel to be metered correctly.Drop the bowl down off the carb and check for junk in the bowl. Check to se if the float is set at the right setting. Little pieces or rust in the bowl will be sucked up into a jet and plug it up and stop it from running. Do not leave gas in your mower over extended periods of time, this is the cause of sludge and rust build up in gas drawing moisture.
Testimonial: "Icleaned the bowl it works good now"
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