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Author Topic: Husqvarna 268XP 268  (Read 28380 times)

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Offline Cut4fun

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Re: Husqvarna 268 272 questions
« Reply #110 on: December 16, 2015, 06:34:26 pm »
Had a 268 with 272 cylinder in today.  While trying to tune I noticed it would still four stroke with H side closed. 

Didnt get a chance to see which carb but guessing needs a cleaning and kit. 

Any ideas if you have seen this as to why it would be 4 stroking with H side closed. 

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Offline Eccentric

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Re: Husqvarna 268 272 questions
« Reply #111 on: December 17, 2015, 01:27:27 am »
Metering lever too high.

Metering lever fork not seated in the grooved 'tit' on the metering diaphragm.

Leaking needle/seat due to grit or damage.

Leaking welch plug.



........or a combination of two or more of those.
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Offline weimedog

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Re: Husqvarna 268 272 questions
« Reply #112 on: December 17, 2015, 08:27:11 am »
If swapping and or fixing the carb doesn't fix it.... check and make certain the plug wire isn't arcing to either the case or the cylinder.  ::)
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Offline Cut4fun .

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Re: Husqvarna 268 272 questions
« Reply #113 on: December 17, 2015, 12:14:57 pm »
All the above will be getting checked when it comes back in Jan.

Now I am wondering if this carb had a brass governor on it that goes bad.  Acted like ones that has done that in past too.

Didnt think of this till 530am
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Offline Cut4fun .

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Re: Husqvarna 268 272 questions
« Reply #114 on: December 17, 2015, 12:50:06 pm »
Just in case it is this carb  Tillotson HS 234b http://www.husqvarna.com/ddoc/HUSI/HUSI1989_AAaa/HUSI1989_AAaa_I8900006_.pdf

Diaphragm & Gasket Set RK-23HS    DG-5HS/T


Tillotson Carburetor & Kit Application Chart  https://www.stens.com/assets/media/pdf/2012_Tillotson_Application_Chart.pdf

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Offline Cut4fun .

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Re: Husqvarna 268 272 questions
« Reply #115 on: December 18, 2015, 01:17:43 pm »
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Offline aclarke

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Re: Husqvarna 268 272 questions
« Reply #116 on: December 18, 2015, 11:14:22 pm »
Plug the governor with a little aluminum disc or Welch plug
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Offline Cut4fun .

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Re: Husqvarna 268 272 questions
« Reply #117 on: December 19, 2015, 09:43:57 am »
Quote from: aclarke on December 18, 2015, 11:14:22 pm
Plug the governor with a little aluminum disc or Welch plug

Dont have saw right now. When it comes back thats what  I'll do if it has ones.

Didnt think to look for one when it was here.
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Offline Cut4fun .

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Re: Husqvarna 268 272 questions
« Reply #118 on: December 22, 2015, 04:32:01 pm »
Not welch. No gov on the HS 234.  Put one of the new AFM 272 carbs  CCC Dave sent me. Carb is great, but still no change.

Checked all wires for grounding.  Nothing I could find.

Wonder if a coil is going out?  Also wonder if it might have been a aftermarket coil at one time and is failing now. Dont matter if oem or afm.  But it flutters like it is fat but plug shows not.  So think a coil could be doing this? 

Reminds me of what jmester was saying that 394 coil was doing. Not letting it get up to rpm's and fluttering or breaking down?
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Offline jmester

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Re: Husqvarna 268 272 questions
« Reply #119 on: December 22, 2015, 11:07:43 pm »
Not real familiar with the model saw you are working on but sound exactly like what I had going on with the 394 I had. Put an oem module in it and it has ran great. If everything else checks out on the fuel side and the ignition wiring is good. I would try another coil.
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