Model 20043 Serial 210005249 Fuel - good Air - good Spark - no good. I've replaced the fouled plug but no spark. What's next? Ignition?
Yes the coil
SOURCE: my toro mower won't start.
The Toros have a Tecumseh engine and are famous for this. I'd suggest you do a thorough cleaning of the carburetor, but there is a little known secret that I've learned about this particular carb. Pull the bolt from the bottom of the float bowl on the carb (1/2 inch wrench; the "main jet"). Be sure that all the little holes in that jet are clean and you can stick a wire thru them. There is a microscopic hole at the very top of the threads on that brass bolt that often gets clogged and your mower will not start. I use the wire from the needle valve inside the carburetor to stick thru it, as it's about the only thing that'll fit. (note: if you have 50 year old eyes like me, you can't even see this hole w/out specs). Hope this helps and best of luck to you. (also, be sure you put the float bowl back on the right way; there's a bevel in the back that needs to go toward the hinge in the float or the float won't work. Learned that one the hard way as well. )
James
SOURCE: Toro, 21" inch push mower
If the engine compression is too low, it will have problems starting or not start at all, and these seem to be the symptoms you are describing. An easy test is to pour some oil into the cylinder and see if that increases the compression. If this makes a difference, you will need to replace the piston rings and at least hone the cylinder, depending on the wear in the cylinder bore.
You can also try spraying some easy start into the intake and seeing if that makes the machine run for just a short spurt. If it does, you could have a problem with the carb not supplying fuel due to something like a blocked jet or irt in passages etc.
SOURCE: toro model 20070 doesn't start. It sounds
If you have confirmed "no spark",and spark plugs replaced but still make no difference, then maybe you have a bent switch arm . It is the arm the brake cable attaches to on the engine. If it appears bent away from the engine- bend it back. If not, it is either the coil or possibly the kill switch . If you have an ohmmeter- with the bail pulled, the little spade terminal that hooks to the coil should not be grounded.Also check the kill switch wire and voltage.If its loose, its confirm kill switch issue.Wiggle the kill switch wires and reconnect properly.If its not the problem, then it sounds like the coil has gone bad. Try cleaning the ends of coil where it meets the fly wheel. Any rust or corrosion will dampen the spark.Check for an ignition spark presence by first removing the spark plug with a spark plug wrench, then grounding (allowing to touch) the hexagonal metal part of the spark plug with a bare metal part of the engine (such as the metal cooling fins just adjacent to the spark plug).Also check if air filter is blocked, remove air filter then try to start with out filter.
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This will help.Thanks.Helpmech.
SOURCE: Toro GTS 20332 (bought it 12 months ago) won't run
I believe that Toro Guarantees to start 1 Pull, was gas left in it all winter?, If so this is'nt covered under warranty, cause gas is to be ran out or dumped out at end of season this will prevent any gumming up of carb . did you completely disassemble carb? does it have a primer on it, those gskts need replacing, clean out the jet in bottum of float bowl,small holes,sometimes missed and remove and check your needle/seat to make sure that when float drops gas runs out then lift float up and gas should stop. hope this helped you,another thing spray carb cleaner in carb and pull over and see if it will start that way enough to keep running with choke to see if it will **** gas into it
SOURCE: toro recycler self propelled 6.5hp, 22" (gts)
Hi steve16092...
You may have MAJOR damage to your motor because of overfilling the oil.
Sometimes you can bend or break a piston rod when the engine is overfilled.
Meanwhile you can check a few other things.
Take your plug out and ground it against the head of the engine with the spark wire attached to it.
You should get a bright blue spark, if not then check your ignition module, it may be faulty.
If you have spark, then try putting a little bit of lighter fluid/or gasoline in the cylinder and reinstall the plug and try to crank it...if it cranks, then you may need to clean/rebuild your carburetor.
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