Question about NRS Oregon Bar And Chain Set For Echo Chainsaws 16" Oregon # 105700 Fits Echo Models 280, 290, 300, 301, 302, 302S, 315, 330, 351, 3000, 3400, 3451

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Broken bolt that holds chain bar in place

I have an older Echo Kioritz 302S chain saw. My son twisted the back bolt off that holds the cain bar in place. Questions; Is it repairable and if so where would I find the part? Is it something I can do at home? I have searched the internet with no luck for repair manuals and or parts. Thank you for your time spent to help me.

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  • Anonymous Apr 09, 2009

    Same thing for me. Over tightening lead to the bolt snapping off. I could remove the post with pliers but I'm having a hell of a time finding the part on the schematic. I have an echo CS 346. Apparently echo must know that this part breaks a lot and they leave it up to the parts places to deal with it. Like I said the parts schematic doesn't really scream "here it is". It seems that there might be a part in the schematic that is right, but it's really hard to tell. Plus if you do an internet search for "post" you get gobs of blog posts, not bolt posts. Damn you cliche loving starbucks mocha sipping freaks. **** on your popular search terms google biatches.

  • Thomas F. Schneider May 11, 2010


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As you know, your chain saw is obsolete, However, go to this website and they will have what you need:

Good luck.

Posted on Jan 25, 2009

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I would try here first. I have had good luck getting old parts here. I hope it helps you out.

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I am assuming your saw has an outboard clutch (most Macs do).
Please see page 16 here:
It is possible to install it backward look colsely at the orientation in the second illustration from the bottom, left column.
New chains stretch Please for your safety watch it and tighten when needed.
Chain Adjustment
  1. Make sure the chain brake is off (gloves will protest your fingers).
  2. If necessary, loosen the bar nuts that are clamping the clutch cover in place (or whatever holds the clutch cover and bar on). They do not need these really loose - finger tight will do.
  3. Ease the tension adjustment until the chain is obviously loose.
  4. Using one hand, hold the nose of the bar up.
  5. While holding the nose up, adjust the tensioner so that the center of the chain just touches the underside of the bar, add a touch more.
  6. Continue holding the nose of the bar up & tighten up the bar nuts / bolts / quick-release system. HTH

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The centrifical clutch is probably rusted (or has a broken spring). You can try a small amount of WD-40 inside the clutch to see it that will break it loose.
Also, be sure that the chain tension adjustment is not too tight!!

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How to adjust chain bar oiler

The Stihl 026 PRO does have an adjustable oiler and it is located on the bottom of the saw just below the clutch drum.
Stihl also builds an 026 "Standard" without the adjustable oiler, however, the hole location for adjustment is still there.

The 026 PRO will also have a decompression valve on top of the saw to make the rope easier to pull during startup. If you have the DECO valve you should also have the adjustable oiler. Hope this helps.

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measure from the very front edge of the bar back to the gripper teeth

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Echo kloritz302s


I Don't think you could go wrong with that, Its one small 2 cycle oil mix bottle to 1 gallon of gas.

Feb 15, 2009 | NRS Oregon Bar And Chain Set For Echo...

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