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050 051 075 076 Info Thread

Discussion in 'Chainsaw Stickies' started by JDNicol, Apr 15, 2011.

  1. Richard Wirth

    Richard Wirth ArboristSite Lurker

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    Thanks for the info, and damn it, I installed it in the upper port, it looks like I will have to split the case again.
     
  2. Rockfarmer

    Rockfarmer ArboristSite Guru

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    You may be right, I have to look when I get home, I got a 50% chance of being wrong, lol!
     
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  3. Richard Wirth

    Richard Wirth ArboristSite Lurker

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    ok, I am waiting for a new piston and oiler plunger knob to arrive in the mail so I got time...I bought the 075 and 056 magnum II for Christmas, the 056 runs great the 075 needed a complete rebuild.
     
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  4. ray benson

    ray benson Tree Freak

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  5. Rockfarmer

    Rockfarmer ArboristSite Guru

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    18A8B1D9-8BFF-4236-B08F-F7E90931F77D.jpeg 8EF44206-B922-4AD7-A76F-A7B5EEE056F9.jpeg
    Both excellent saws! Love the Mag for felling. Probably the most loved saw in the Pacific Northwest. So you got it right, top hole for spring and bb with bb on pump side. Pic shows the 2 styles. Second pic shows the case minus the two orings. Maybe the 3/8 oring you found slid off the plunger barrel?
     
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  6. sallad

    sallad ArboristSite Lurker

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    Crank Bearing.jpg

    Restoring a sentimental 051 with the help of this thread. Thanks everyone!
    Was searching for the source of metal that caused the failure and just discovered the wonky crank bearing.
    Debris.jpg
    Found the three small pieces in the spark plug and the fished the large one out of the crank bearing.
    I assume that large piece is part of the crank bearing cage. I have never seen one apart. Is that what it is?
     
  7. sallad

    sallad ArboristSite Lurker

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    Is there a particular gasket material that is preferred for the cases? Seems the aftermarket are made from a different material than OE.
     
  8. Rockfarmer

    Rockfarmer ArboristSite Guru

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    That is true. I’ve used both and never had a problem with either. I think the important thing is a clean surface, proper torque of case screws and I like the permatex anaerobic gasket sealer.
     
  9. sallad

    sallad ArboristSite Lurker

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    Interesting. I was contemplating using permatex 80019 aviation sealant. I googed Permatex anaerobic and there are two types. Flange sealant 51531 and gasket maker 51813. Which do you use?
     
  10. Rockfarmer

    Rockfarmer ArboristSite Guru

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    I use the 51813. I like to use a lot so if I get some blobs inside the case it’s no big deal. The gas eats it away and it cleans up when you run it. If you re split the case you’ll see how well the gasket sealed as it gets destroyed upon splitting. It sticks very well.
     
  11. Rockfarmer

    Rockfarmer ArboristSite Guru

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    As far as the seals go, I like the double lip spring pressure seals. The cheap Chinese ones may work but why risk it. The green Stihl ones that are nos may be to old and hard.
     

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