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Saw leans out after 2-3 seconds.

Discussion in 'Chainsaws' started by Jimmy in NC, Jan 15, 2018.

  1. drf256

    drf256 Giant Member (and Fartknocker) #IMADIK

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    What does raising a metering lever do?
     
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  2. Jimmy in NC

    Jimmy in NC Pinnacle OPE Member

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    Opens the needle ealier/easier. Feeds more fuel/more available. Too high and she will flood. Too low it starves. It's a balancing act because raising the lever you can affect pop pressure. It's not an end all...just a way to fudge in a little extra fuel in this case.

    Sent from my SM-G955U using Tapatalk
     
  3. David Young

    David Young Pinnacle OPE Member

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    I had multiple saws do this same/similar problem.

    short story long.

    aftermarket fuel lines will turn soft with a little fuel.

    I only use oem fuel line.

    I also had a problem with aftermarket crank seals on an 026. bought 5 sets cheap, I used 4 of them as soon as I started the saw the seals would fail.

    oem seals and the saw is still making chips.

    fwiw I threw out the 5 th set of 026 seals....
     
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  4. srcarr52

    srcarr52 We can't stop here, th1s is bat country!

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    I've seen this type of issue when the carb has to high of pop off pressure. The impulse from the pump side isn't strong enough to push open the needle far enough and they run out of fuel when in high demand.
     
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  5. RIDE-RED 350r

    RIDE-RED 350r Pinnacle OPE Member

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    So, what is the solution to pop-off pressure too high?? I've seen it said that there is not guarantee that the metering lever spring supplied in rebuild kits are going to be of the correct strength and because of that I have always re-used the existing spring. What does one do if he loses the original or it is damaged, etc? Cut a wrap or two from the spring??
     
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  6. srcarr52

    srcarr52 We can't stop here, th1s is bat country!

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    It's usually after heavy modification the problem shows up. The solution is to nip a few wraps off the spring or use a different one.
     
  7. Al Smith

    Al Smith Pinnacle OPE Member

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    You can Google how to properly set the pop off .I've never done but I think Cliff H does .According Rick that's the secret why his saws run so well .
     
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  8. traffic903

    traffic903 Super OPE Member

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    I had to take about 8 "coils" off the spring in my 660 build to get pop pressure down to workable point. Was ridiculously long!
     
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  9. Basher

    Basher Pinnacle OPE Member

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    There ya go folks, doesn`t pay to overlook the simple stuff first.
     
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  10. Jimmy in NC

    Jimmy in NC Pinnacle OPE Member

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    Also... FWIW...

    I ran this saw with an AM from my stash. I also stopped in and purchased a new OEM filter at my "lovely local dealer". $9.00 later I left. I ran this saw with a 91dl bar buried in dry dead red oak. I saw no difference in RPMs and I did not touch the screws between my AM or OEM filter. If anything it was a touch lower idle (100-200 rpm) with AM indicating slightly more flow. Top RPM loaded and unloaded was the same.

    I am not saying that all AM filters work.. but for $9.00 for the large black Stihl filters...I'll keep trying AM.

    The saw is back in service at the saw mill as of 2:00 this afternoon.

    Sent from my SM-G955U using Tapatalk
     
  11. Jimmy in NC

    Jimmy in NC Pinnacle OPE Member

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    This was my next step and a very note worthy suggestion. I have seen several carbs clean but not run due to a stiff metering diaphragm. HLs are real bad for this.

    Sent from my SM-G920V using Tapatalk
     
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  12. Basher

    Basher Pinnacle OPE Member

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    Jimmy, the AM internal filter media usually will work for a few days but the gasoline turns a lot of them to a mush like material. I bought a dozen of the big orange filters from Forrester, likely Huztl supplied and they looked great but very quickly caused problems. I pulled the center core out and just run the outer screen, they work good that way in my modified 026`s.
     
    Last edited: Jan 17, 2018
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