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When to replace a chain saw blade?

Discussion in 'Homeowner Helper Forum' started by nettle, Nov 3, 2019.

  1. nettle

    nettle ArboristSite Member

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    How to tell when the chain saw blades need replacement? I sharpen my own (and file the depth gauge) and as of now they are cutting just as good as new. However the blades are growing shorter and shorter. Is there a length to these that determines replacement?
     
  2. Jethro 2t sniffer

    Jethro 2t sniffer Addicted to ArboristSite

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    When they start falling off lol or none left on them to sharpen but... if it has been abused with no oil it may be warn down to the rivets 1st and is getting dangerous.

    Call them cutters too. No blades on a chainsaw:)
     
  3. grizz55chev

    grizz55chev Tree Freak

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    What’s a chainsaw blade?
     
  4. nettle

    nettle ArboristSite Member

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    Thank you.
     
  5. Jethro 2t sniffer

    Jethro 2t sniffer Addicted to ArboristSite

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    No problem
     
  6. nettle

    nettle ArboristSite Member

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    I stand corrected.
     
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  7. Marine5068

    Marine5068 Addicted to ArboristSite

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    Lots to learn about chain saws, bars, chain, but for now, the "blade" as you call it is probably what we are thinking as the "chain".
    It has the cutters on it and separator links in between.
    The bar is the part of the saw that the chain rides around on.
    It's all ok, you have to learn so have at it. We all learned too.
    If it's dull then the cutters need sharpening,
    But as a rookie, do yourself a favor, bring the saw in to a local saw shop and ask some questions.
    Buy a new chain, ask how to tension it properly and what to use for bar oil and saw fuel.
    They should be able to help you out easily and maybe tell you about the current chain and even sharpen it for you.
    It's good to have a couple chains for each saw.
     
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  8. EchoRomeoCharlie

    EchoRomeoCharlie ArboristSite Operative

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    The chain requires replacement when the teeth get back to the line that is on the cutter from the factory. At that point, it's essentially past it's serviceable life and should be replaced.

    Get two or three new chains. This way you can rotate through them and have one available as a spare if you dull a chain on metal/dirt/etc. or you throw a chain and kink a link.


    Remember flip your bar over every time you sharpen your chain.
    Clean out the oil delivery holes and the rails every time you flip your bar.
    Check for burrs on the rails of the bar every time you flip your bar, knock them off with a file if necessary.
     
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  9. nettle

    nettle ArboristSite Member

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    Not a rookie with chainsaws. Just a rookie at sharpening. I have always had someone else sharpen and tell me when to replace the chain. I have never seen a line on a Stihl cutter. I purchased 3 new Stihl chains this past week and there are no lines on the cutters.
     
  10. Yoopermike

    Yoopermike ArboristSite Guru

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    Pics? Ive never NOT seen a Stihl chain without file angle markings.
     
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  11. nettle

    nettle ArboristSite Member

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    OK. I just took another look. The cutters on the chains for my MS150 (the chains I just bought) do not have the mark(s). The cutters on the chains for my MS261C (the chains I just bought for it) do have these marks. Very little cutter left when filing to the mark. In the past, on the advice of others, I have pitched some chains with some life left on them.

    These are the answers I am looking for and do very much appreciate the advice.
     

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