Question about Craftsman 20 Hp 42" Deck Lawn Tractor

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My craftsman lawn tractor seemed to overheat and struggle with hesitation. I replaced the spark plugs, cleaned the filter and added oil, however, it still seeems a little sluggish with hesitation. Do you think its the muffler (tractor 9 years old)

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Check the oil, if it is a milky color then it has water in it and will cause it to over heat. Also smell it for gas that will also cause it to over heat. Has any other work been done recently?

Posted on Aug 19, 2010

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Posted on Jan 02, 2017

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I had possibly the same problem with my lawn tractor about a month ago... I tried removing the carburetor and cleaning it, but I always ended up pushing debris into another area and creating new problems. Eventually I just bought a new carburetor, changed the oil (some gas had gotten into my oil thanks to the problems I had with my carburetor), cleaned the spark plug, emptied the oil filter and replaced it, checked the air filter ((no oil there, phew)... and it seems to be running fine after 3 engine hours (knock on wood).

My backstory is the lawn tractor was sitting in the garage with our car for two years and not used. I prepped it for long term storage, but failed to drain the carburetor of old gas, so the old gas gummed up the works (even with fuel stabilizer). When I did get it running (after changing everything listed above) a lot of smelly white smoke kept coming out, but as I let it idle in fast speed the engine strokes became more regular and the bouts of white smoke became fewer and shorter until the smoke stopped altogether.

Hopefully this helps!

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1 Answer

Help!


on the murry try the batt earth lead and on the push mower if the mower has been tipped up oilcan go into the air filter if the filter is fome wash it out in some fuel to clean dry and put back on engine if mower starts it will take 5 min for oil to burn out of the exhaust muffler allso clean the s plug when tipping a mower allways keep the s plug up words and all will be good

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This sounds too easy of a solution but I had a like ptroblem with my Craftsman. I loosed the gas cap a bit and the rough running and stalling stopped. he vent on the gas cap that contains a turn over interrupt valve was plugged causing the gas not to flow. I took the cap apart and cleaned out the vent hole though cleaning the holewith a paper clip would have worked as well. Anyway..it fixed my problem. I think my dirty hands of deris deposited the matera in the vent hole when filling with gas.

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The starter bendix is not engaging properly the bendix pushes the starter gear into the flywheel gear when the starter spools up, it may need minor lubrication.
It sounds like the engine is not getting fuel as it should, the main jet may be restricted from varnish if she stumbles under a load especially if the plug tips are white after running for 1/2 an hour.
Remove the float bowl and clean the jet, make sure the fuel is still good, gas that smells like a library is more like varnish and less like fuel.

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Does the engine turn at all? If it does, the you probably need to replace your fuel filter, air filter, and spark plug.

On small engines, when they get turned over like that, oil tends to go places it shouldn't. Usually that means that your filters, and carburetor, and from there into your cylinder, fouling your spark plug.

Check those items, and replace any that have traces of oil in/on them.

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