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Ariens st 622 string trimmer, starts but quickly ceases running. I have found if you hold in the priming bulb, (not squeeze, just hold all the way in), it will run, but stops when you let go of primer bulb. What's wrong, and how can I fix it ?

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It isounds like your primer bulb may have a hole in it and is alowing air to get sucked in in stead of fuel

Posted on Mar 08, 2009

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1 Answer

The primer bulb doesn't fill with gas


sounds like you hasve a cracked fuel line or a cracked primer bulb. that is why it cant prime.

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Terry: According to eHow.com:

"
  • Put on a pair of safety glasses. Remove the fuel cap from the Weed Eater and set it aside. Fill the fuel tank with unleaded gasoline that has been mixed with quality 2-stroke oil in a 40:1 ratio. Replace the fuel cap.
  • Move the Weed Eater to a safe place and lay it flat on the ground. Depress the fuel bulb located beneath the carburetor approximately six times to prime the engine. Press it slowly so that fuel has adequate time to traverse the fuel line.
  • Slide the handlebar-mounted engine "On/Stop" switch to the "On" position. Slide the choke lever beneath the fuel tank to the "Full" position.
  • Depress the "Throttle Lock" lever located beside the engine "On/Stop" switch. Keeping the lever depressed, squeeze the throttle trigger. Release the throttle lock. This sequence holds the trigger in the depressed position, which aids in starting the Weed Eater.
  • Roll the Weed Eater so that it is resting on the engine and the trimmer head shield only. This will allow the spinning trimmer head to avoid contact with the ground. Brace the Weed Eater by holding it to the ground with one hand. Using your other hand, pull the starter rope quickly until the engine begins to run. Do not pull the rope more than a dozen times. If it fails to start by then, squeeze the throttle trigger and continue to pull until the engine starts.
  • Allow the Weed Eater to warm up for about 15 seconds, then slide the choke lever to the "Off" position. Let the trimmer run for another minute without touching the throttle lever. After the Weed Eater has warmed up, squeeze the throttle trigger once to disengage the throttle lock. The trimmer is now operational.


  • Read more : http://www.ehow.com/how_6720315_start-gas-weed-eater.html"

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    MY HOMELITE STRING TRIMMER UT21505 PRIMER BULB LEAKS. MY PARTS LIST DOE'S NOT SHOW THIS PART. CAN I PUCHASE IT OR DO I HAVE TO THROW IT AWAY


    You can easily get a new primer bulb for it...most small engine repair shops will have what you need, and if you want, you can most likely snag one on Ebay....DON'T THROW IT AWAY, ok?

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    Engine runs then quits


    You may have a small air leak at the carb, sometimes found at the bulb primer. This allows the engine to stop picking up fuel due to sucking air into the fuel line. If you re-prime, it will run again for a short period?

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    John Deere S1400 won't start


    I have the same problem. I replaced the primer bulb, and the fuel lines. Still no gas to the bulb; (It ran fine before I replaced the primer bulb)

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    Husgvarna string trimmer stahls.


    Try getting some carb and choke cleaner and spraying down the carb. You might have some varnish in the carb and it won't let the fuel flow properly. My ryobi 4 cycle trimmer does that every year. I clean the carb and it usually runs decently.
    Good luck
    roundo4

    Aug 09, 2009 | Lawn Trimmers & Edgers

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    Runs only briefly after priming


    Yes, Depending on how old your trimmer is, one of two things is wrong. Either the carburetor just needs a very good cleaning, or you need to purchase a carb. kit and replace the small screen, gaskets, and needle valve. It would probably be good idea to do both if your trimmer is more than three years old and if you have never replaced parts on carb

    Jim

    May 30, 2009 | Ryobi Lawn Trimmers & Edgers

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    Need parts for Ariens ST 622 string trimmer


    MY ARIENS ST622 starts but then dies down quickly any ideas?

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    How do i restring the Ariens st 622 string trimmer


    Cut two pieces of 18" commercial grade line - one to mount on each side. Look at the series of holes, two on bottom of rotating head, two immediately above but on outer lip of plate. Go up through the bottom two holes, even up your piece of line (like when you are putting in a new shoe string in a pair of shoes) and cross over then out through the top two. All done. If you are using an adequate grade of commercial line you can trim for hours over the roughest of stuff without worrying about restringing.

    May 03, 2009 | Lawn Trimmers & Edgers

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