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I have a John deere lx277 model and the other day it was running fine and I mowed the lawn no problem. I had the mower idling as I was weed trimming. The mower shut off. I out gas in it n i got it started but seems like it's not putting out full power when driving it . Not sure what it could be. Anyone know anything that I could try.

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    Try cleaning the fuel lines and carb - running out of fuel is the best way of bringing dirt into pipes and jets etc...
    – Solar Mike
    Aug 4 '19 at 21:52
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    And possibly condensed water, sitting at the bottom of the tank. You might try some "dry gas". Aug 4 '19 at 23:02
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    I’m voting to close this question because it's been abandoned
    – FreeMan
    Dec 28 '20 at 21:14
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You could have a bad gas cap. They are supposed to allow air to vent into the mower but they can warp from outside temperatures. I had a foot of snow on mine and then alpine direct sunlight when one day I had similar symptoms.

Next time when it starts to sputter unscrew you gas cap slightly and see if it runs great after that. If it does you know that is your problem. You should prob stop and get the gas cap at that point but I went ahead and mowed my lawn because my neighbors and landlord get cranky if I dont. I hope this is your fix ... I messed with a bunch of other expensive stuff before I found this fix.

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There are 4 things that the engine needs. Fuel, spark, oxygen, and compression.

First easy thing is to check the air filter to make sure it didn't suck up a bunch of dust. for example those dandelion seeds can really plug up a filter quickly.

Another quick thing to check is the spark plug. Get a new one. If you were idling, and a lot of oil was getting into your cylinder or you're running rich fuel mixture it could be fouled up and could make it impossible to rev up the engine.

It sounds like you added new gas too. If it ran dry like the comment said, there could have been sediment from the bottom of the tank that clogged up your carb or line or filter. That would take some disassembly, replacing fuel filter, and using carb cleaner on the carb, and might fix it.

Last and least likely is if it overheated or was low on oil, your piston rings are shot and you lost compression and have a weak engine now. Would need at a minimum new rings.

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