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Lawn mower problem

guns-n-painthorsesguns-n-painthorses Member Posts: 6,462 ✭✭✭
edited August 2017 in General Discussion
Ok, my rider w/15.5 Briggs engine ran fine the 1st use this year. Now it will start and run normally. But will die within a few minutes. Usually will not re-start until cooled off. I've cleaned the air filter. Drained/refilled gas tank w/fresh gas. No help. Spark plug looks good. I cleaned it and reinstalled. Still no good. What do you think, New spark plug? Any other ideas?
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Comments

  • guns-n-painthorsesguns-n-painthorses Member Posts: 6,462 ✭✭✭
    edited November -1
    15HP Briggs rider. Gas in the oil. Trashed or repairable at reasonable price?
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  • guns-n-painthorsesguns-n-painthorses Member Posts: 6,462 ✭✭✭
    edited November -1
    Picked up a yard machines 36 inch rider on a junk run yesterday. Looks like new, was new in 2009. Brought it home, filled it with gas and a jump start, runs like a top. Everything works, mows great but It will only run in full choke. Take it off choke and it dies. Mows like crazy even in full choke. Suggestions?
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  • HandLoadHandLoad Member Posts: 15,998 ✭
    edited November -1
    Carb jets are clogged by ethanol and junk from storage with cheap crap gas. Easiest is carb replacement entire.

    Might be able to fix with a remove carb bowl, blow out with air, clean and reassemble, followed by double strength Sea-Foam mix in gas tank.
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  • KnifecollectorKnifecollector Member Posts: 3,267 ✭✭✭
    edited November -1
    Yeah the carb is dirty. I'd take it off, disassemble it and soak the parts in Pinesol cleaner. It's better than carb cleaner as far as dissolving the gummy build up.
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  • Wild TurkeyWild Turkey Member Posts: 2,425 ✭✭✭✭
    edited November -1
    Clean the carb and quit grinning.

    I can feel that grin from here[:D]
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  • mlincolnmlincoln Member Posts: 5,039 ✭✭✭
    edited November -1
    I'd suggest watching a YouTube video on how to clean the carb, but the suggestion on simply replacing it is quite valid. I imagine you could get a new one off of ebay or Amazon for $20 shipped, maybe $25, and at that price it's easier simply to replace it.
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  • mlincolnmlincoln Member Posts: 5,039 ✭✭✭
    edited November -1
    Forgot: On ebay are rebuild kits, including the carb and a fuel filter and fuel lines and so forth. The kit generally costs $5 more than just the carb, but are well worth it.
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  • 11b6r11b6r Member Posts: 16,584 ✭✭✭
    edited November -1
    Replace fuel filter. Get a bottle of Mechanic in a Bottle (Wally World) and run a tank of gas with that in it. If that does not do it, rebuild/ clean carb. Seafoam also works.
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  • EVILDR235EVILDR235 Member Posts: 4,398 ✭✭
    edited November -1
    Quit fooling around and just have Juan and Jose to mow your lawn, but first hide all the female members of your family. Take pictures of everything you own for the insurance company and the police report.

    Kow Dung PI.
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  • buckglovesbuckgloves Member Posts: 156 ✭✭
    edited November -1
    Clean the fuel tank too.
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  • jltrentjltrent Member Posts: 9,344 ✭✭✭✭
    edited November -1
    All good advise.
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  • fordsixfordsix Member Posts: 8,554 ✭✭
    edited November -1
    sea foam
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  • montanajoemontanajoe Forums Admins, Member, Moderator Posts: 60,235 ******
    edited November -1
    Great score!!! Clean complete fuel system and you'll be good to go,,
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  • bearman49709bearman49709 Member Posts: 503 ✭
    edited November -1
    Had the same problem with a craftsman 20 years ago just needed the carb mounting bolts tightened.
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  • GrasshopperGrasshopper Member Posts: 17,041 ✭✭✭✭
    edited November -1
    Well, I think you have it reversed,,you have it in run mode and think you have it in choke mode...I am serious...Never seen a mower run FINE in choke mode no matter what.
    I had a Chinese cycle that was backwards in the manual !! I was trying to start it in the run mode instead of choke, after I figured it out it ran fine. YMMV
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  • hillbillehillbille Member Posts: 14,459 ✭✭✭✭
    edited November -1
    quote:Originally posted by Grasshopper
    Well, I think you have it reversed,,you have it in run mode and think you have it in choke mode...I am serious...Never seen a mower run FINE in choke mode no matter what.
    I had a Chinese cycle that was backwards in the manual !! I was trying to start it in the run mode instead of choke, after I figured it out it ran fine. YMMV


    I have an old crafstman tiller that will only run at half/three quarter choke, stop by and I will show you one that runs just fine only in choke mode........... no more tilling than I do a year, figured it wasn't worth the money to fix it, as it runs good enough to do my small garden.
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  • guns-n-painthorsesguns-n-painthorses Member Posts: 6,462 ✭✭✭
    edited November -1
    quote:Originally posted by Grasshopper
    Well, I think you have it reversed,,you have it in run mode and think you have it in choke mode...I am serious...Never seen a mower run FINE in choke mode no matter what.
    I had a Chinese cycle that was backwards in the manual !! I was trying to start it in the run mode instead of choke, after I figured it out it ran fine. YMMV


    No, it's in full choke mode. And it's the only way it will start as well. But it sure will run untill you start to take it off choke then goodnight.
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  • GrasshopperGrasshopper Member Posts: 17,041 ✭✭✭✭
    edited November -1
    quote:Originally posted by guns-n-painthorses
    quote:Originally posted by Grasshopper
    Well, I think you have it reversed,,you have it in run mode and think you have it in choke mode...I am serious...Never seen a mower run FINE in choke mode no matter what.
    I had a Chinese cycle that was backwards in the manual !! I was trying to start it in the run mode instead of choke, after I figured it out it ran fine. YMMV


    No, it's in full choke mode. And it's the only way it will start as well. But it sure will run untill you start to take it off choke then goodnight.



    OK then! clean tank and get a NEW carb..been there.
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  • serfserf Member Posts: 9,217 ✭✭✭✭
    edited November -1
    quote:Originally posted by Grasshopper
    quote:Originally posted by guns-n-painthorses
    quote:Originally posted by Grasshopper
    Well, I think you have it reversed,,you have it in run mode and think you have it in choke mode...I am serious...Never seen a mower run FINE in choke mode no matter what.
    I had a Chinese cycle that was backwards in the manual !! I was trying to start it in the run mode instead of choke, after I figured it out it ran fine. YMMV


    No, it's in full choke mode. And it's the only way it will start as well. But it sure will run untill you start to take it off choke then goodnight.



    OK then! clean tank and get a NEW carb..been there.


    Add gas additive to refuel can to keep the gas fresh. 2cycle oil as a
    top oil may work,use sparingly.


    serf

    http://www.homedepot.com/p/Ethanol-Shield-2-6-oz-2-Cycle-Oil-AC99105/204751057

    Ethanol Shield?s 2-Cycle oil is the perfect solution to help guard your engine and fuel system from the harmful effects of ethanol fuels. This 2-Cycle oil is specifically formulated to provide the best combination of lubrication for your engine plus protection from ethanol and stale fuel related problems. This will result in improved starting, performance and service life.
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