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McCulloch CP 125 build

Discussion in 'Chainsaws' started by Chainsaw Jim, Jan 13, 2018 at 4:02 PM.

  1. Chainsaw Jim

    Chainsaw Jim Cylinder Assembly

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    @Armbru84 sent this beast my way to get a little tlc.
    I'll be giving it a thorough, and replacing all maintenance items. There's also talk of having a little bit of port work done to it.

    20180112_153726.jpg 20180112_153713.jpg 20180112_153650.jpg 20180112_153658.jpg

    I'll be doing this teardown and build in real time so please be patient.
     
  2. Dub11

    Dub11 Some body poisoned the watering hole!

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  3. Warped5

    Warped5 Pinnacle OPE Member

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  4. Armbru84

    Armbru84 Pinnacle OPE Member

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  5. Onan18

    Onan18 OPE Sponsor

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  6. p61 western

    p61 western ONE OF THE GREATEST!

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  7. TreeLife

    TreeLife Pinnacle OPE Member

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    Big mac's are bad azz, subbed!
     
  8. T.Roller

    T.Roller Huffy and Puffy, Roll Tighter Tater....

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    Yes they are.
     
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  9. Chainsaw Jim

    Chainsaw Jim Cylinder Assembly

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    Here's a few pics of the muffler. I don't think the base will be salvageable.

    20180113_141212.jpg 20180113_141429.jpg
     
  10. RocketRoss57

    RocketRoss57 Super OPE Member

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    The yellow peg board is fitting and cool!
     
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  11. heimannm

    heimannm Pinnacle OPE Member

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    That is not an SP muffler, the SP mufflers were rectangular. The saws had a cover over the muffler when new...

    SP125C.JPG

    Many did not survive.

    McCulloch SP125-2 (1).JPG

    Mark
     
  12. Armbru84

    Armbru84 Pinnacle OPE Member

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    It’s a CP with a SP tank Mark.
     
  13. p61 western

    p61 western ONE OF THE GREATEST!

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    Cool saw Cole. How have you been?
     
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  14. Armbru84

    Armbru84 Pinnacle OPE Member

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    Thanks! Been doing pretty good. Been cold out man. Got a few saws together that have been sitting around for awhile. Just working on projects. How have you been?
     
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  15. p61 western

    p61 western ONE OF THE GREATEST!

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    I have been doing good as well. I got a couple projects I should start on soon, but something always comes up lol.
     
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  16. Chainsaw Jim

    Chainsaw Jim Cylinder Assembly

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    Well...I ran into a major roadblock here. My first though was a bad bearing when the pto side crank stub wiggled. My thought was confirmed when I saw this through the exhaust..
    20180113_142444.jpg
    I pulled the oil tank to get a better look and I see what appears to be a new crank and bearings.

    20180113_154246.jpg

    A little more wiggling and I could then see the oils sweating up and down between the outer bearing race and case. It appears that the last bearing spun in the case enough to enlarge the hole.
     
    Last edited: Jan 14, 2018 at 12:59 AM
  17. p61 western

    p61 western ONE OF THE GREATEST!

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    Well that really sucks. I have a growing collection of Pioneer p series cases with the same problem. I wish there was a fix for it.
     
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  18. heimannm

    heimannm Pinnacle OPE Member

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    I see the compression release now that you say that.

    I already mentioned to Jim that it is possible to bore the crankcase and install a sleeve to house the bearing if needed.

    Mark
     
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  19. p61 western

    p61 western ONE OF THE GREATEST!

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    Would that work on other saws as well?
     
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  20. psuiewalsh

    psuiewalsh Basement Bodging

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    What about loctite 638 or something like that?
     
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