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Gas Ratio Question ?

Discussion in 'Chainsaws and Power Equipment' started by campinspecter, Apr 3, 2016.

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  1. campinspecter

    campinspecter

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    100_3449.JPG
    Can this saw run on a 50 to 1 mix or does it require 40 to 1? Smokes up a storm on 40 to 1.
    100_3450.JPG
     
    campinspecter, Apr 3, 2016
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  2. bobdog2o02

    bobdog2o02

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    50 should be ok but I'm sure it was engineered for 40 or 32....
     
    bobdog2o02, Apr 3, 2016
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  3. The Wood Wolverine

    The Wood Wolverine

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    But that 40-32 wasn't what today's oil is. I run my old Pioneer @ 32 but it doesn't smoke with it.
     
    The Wood Wolverine, Apr 3, 2016
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  4. bogydave

    bogydave

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    Try some synthetic oil at 40 / 45 : 1
    They claim Synthetics smoke less & saws run cooler
     
    bogydave, Apr 3, 2016
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  5. MasterMech

    MasterMech The Mechanical Moderator

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    Being that it's an XL2, the smoke is most likely bar oil getting sucked into the crankcase via the dodgy oil system. These saws oil via a crankcase pressure pulse and check valves. They slightly pressurize the crankcase which on most models will push oil to a plunger pump mounted to either the crankcase or the carb on later models. Frequently the sintered metal filter on the end of the pressure line will fall off taking the little duckbill check valve with it. If the oil tank is full or the saw is tilted sufficiently, they will suck oil back into the crankcase via this open line and fog the whole area.

    And yes, you can run the same mix you run in your husky, but I'd recommend 40:1 in both. ;).
     
    MasterMech, Apr 3, 2016
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  6. campinspecter

    campinspecter

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    Next time that I'm to a bigger center I will look for some .
     
    campinspecter, Apr 3, 2016
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  7. campinspecter

    campinspecter

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    Good explanation , it really does smoke even on 50/1 ratio.
     
    campinspecter, Apr 3, 2016
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  8. Mag Craft

    Mag Craft

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    I agree with MasterMech. If that saw is smoking at 40-1 mix than there is something else that is causing the smoke not the mix.
     
    Mag Craft, Apr 3, 2016
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  9. MasterMech

    MasterMech The Mechanical Moderator

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    The sintered piece is most likely rolling around in the bottom of the oil tank with a wad of goo on the end of it. The goo is what used to be the little duckbill check valve. Don't lose the the sintered piece as they are no longer made and tough to find. I need a couple myself.

    All of the XL series of saw are affected by this very same issue as they age. XL, XL2, Super 2, Super 2 VI are all included in this series. Great running little saws but you need a degree in fluid dynamics to re-plumb the oil system.
     
    MasterMech, Apr 3, 2016
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  10. colin.p

    colin.p

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    Isn't Stihl oil synthetic already? I know the Husky stuff is at least partially synthetic.
    Also, with the oil in a 100ml bottle, it's easy to calculate the ratio. Just put the bottle in 4 litres for 40:1, or 5 litres for 50:1.
     
    Last edited: Apr 5, 2016
    colin.p, Apr 5, 2016
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  11. bobdog2o02

    bobdog2o02

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    Great thought, it would be easy if they sold gasoline in liters in the states..... Gallons her bud.
     
    bobdog2o02, Apr 5, 2016
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  12. campinspecter

    campinspecter

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    Good tip! Will try and find out if Stihl oil is synthetic .
     
    campinspecter, Apr 5, 2016
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  13. TurboDiesel

    TurboDiesel

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    silver bottles
    upload_2016-4-5_22-37-3.png
    says synthetic on the label :yes:
     
    TurboDiesel, Apr 5, 2016
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  14. campinspecter

    campinspecter

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    Will look for the silver bottle!
     
    campinspecter, Apr 5, 2016
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  15. bobdog2o02

    bobdog2o02

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    Or go for echo's Red Armor, it's hot chit.
     
    bobdog2o02, Apr 5, 2016
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  16. XXL

    XXL

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    This raises a good question...which 2-cycle oil is best? :whistle:

    :popcorn:

    :D
     
    XXL, Apr 6, 2016
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  17. bobdog2o02

    bobdog2o02

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    Ford oil is the fastest.....
     
    bobdog2o02, Apr 6, 2016
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  18. ironpony

    ironpony

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    s



    Surprised he did not reply in French......:whistle:
     
    ironpony, Apr 6, 2016
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  19. colin.p

    colin.p

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    Does the gas cans in the US not have litres marked on them as well? We have litres, imperial gallons as well as US gallons marked on ours.
    And no French here bud.
     
    colin.p, Apr 6, 2016
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  20. MasterMech

    MasterMech The Mechanical Moderator

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    They do, but nobody knows what that means.... :doh: :picard:
     
    MasterMech, Apr 6, 2016
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