I pull the cord on my mower and it turns on but shuts of 15 seconds later. It has gas and oil. Could it be the spark plugs??
SOURCE: My Mower won't start.
the problem is that your carbeurator is gummed from from sitting idle all winter with gas in it. Get an aerosol can of carbeurator cleaner, remove the air filter and give the air intake two squirts of carb. cleaner. Then start the mower. When it stalls again let it sit for an hour while the carbeurator cleaner works at dissolving some of that gum. Repeat the process until the mower runs again. Sometimes there is so much junk in the carb. that you have to remove it and soak it in cleaner for about three hours, and then rebuild the carb. with the proper little kit. hopefully you won't have to take this step.
Next fall let the mower run out of gas and stall then you won't have the gum in the carbeurator in the spring.
SOURCE: craftsman 6.75hp self propelled mower starts and turns off
I think that this is a 4stroke engine and runs on neat petrol.Have you been putting oil in with the petrol like a 2 stroke engine needs because this would account for the smoking.If not the check that you havn't overfilled the gearbox oil.
SOURCE: my toro 6.5 self propelled mulching mower with
IF THERE IS A PRIMER BULB ON THE CARB CHECK AND SEE IF IT IS HOLDING GAS IF NOT THE CHECK VALVE UNDER THE PRIMER IS BAD AND SUCKING AIR
SOURCE: Mower won't start, pull cord now locked up
when you say it's full of oil you don't mean it's all the way to the top of the dipstick. because if that is the caes you will have to drain most of the oil out until the oil o nly goes to the full mark on the dipstick.that would explain why you can't pull on the starter rope there is no where for the internal parts to move to it's being blocked by all the oil...good luck
SOURCE: craftsman briggs and stratton 6.50 190cc lawn
Sounds like you will need to clean your carburetor.
Sometimes you can get by with priming it a few times, and letting it
run a few times like that and it will flush the gunk out of the jets,
but most of the time you will need to rebuild the carburetor.
If the mower is over a couple years old, then I also recommend that you
buy and install a new carburetor repair kit, because the diaphragm will
get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, count the
number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns
they were in/out.
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Good Luck, I hope this helped
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