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Author Topic: Poulan 2250: Chain Keeps Coming Loose  (Read 1957 times)

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Offline davbell22602

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Poulan 2250: Chain Keeps Coming Loose
« on: December 16, 2012, 09:38:02 am »
I still cant figure out why this chain keeps coming loose when using this poulan 2250. Chain sprocket is good, overtightened the chain a little bit before tightening the bar nuts, and over tightened the bar nuts a little too. Still comes loose enough where I can see drag link tips from the chain when it sags/hang of the bar.  Its not loose enough to take off the chain by hand with bar nuts still on the saw tight. I'm down to either bad bar or stretched oregon chain.
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Offline Cut4fun

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #1 on: December 16, 2012, 01:27:14 pm »
What tensioner system does your 2250 use? 

The 66dl chain that came on the jd 450 with 16" 66dl bar  is stretched to where it wont stay tight either and is at the end of bar adjustments.  It just needs a new chain.

Without bar and clutch cover on the saw. Is bar oil flowing freely when the saw is running from the oiler hole on crankcase bar area?
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Offline 3000 FPS

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #2 on: December 16, 2012, 01:35:54 pm »
Did you put a new sprocket on?    I ask because you say the sprocket is good.
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Offline davbell22602

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #3 on: December 16, 2012, 01:55:24 pm »
Quote from: Cut4fun on December 16, 2012, 01:27:14 pm
What tensioner system does your 2250 use? 

The 66dl chain that came on the jd 450 with 16" 66dl bar  is stretched to where it wont stay tight either and is at the end of bar adjustments.  It just needs a new chain.

Without bar and clutch cover on the saw. Is bar oil flowing freely when the saw is running from the oiler hole on crankcase bar area?

I have the screw it located on the bar cover.  Its gets lots of oil.
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Offline 3000 FPS

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #4 on: December 16, 2012, 02:32:10 pm »
Put on the bar and chain tighten it up and then put a witness mark right where the bar extends from the clutch cover.  Run the saw until is loosens up again and check the witness mark.   If it is exactly the same then it has to be either sprocket or chain.
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Offline davbell22602

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #5 on: December 16, 2012, 03:09:32 pm »
Here's pics



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Offline 3000 FPS

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #6 on: December 16, 2012, 03:13:14 pm »
Are you still running the original sprocket that came with the saw?
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Offline davbell22602

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #7 on: December 16, 2012, 03:15:56 pm »
Quote from: 3000 FPS on December 16, 2012, 03:13:14 pm
Are you still running the original sprocket that came with the saw?

I dont know. This was a freebie saw. I been having issues with a loose ever since I got it.
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Offline davbell22602

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #8 on: December 16, 2012, 03:16:16 pm »
Here's a video of my sprocket. Dont know if you can tell if its worn enough to be replaced or not.

http://www.youtube.com/watch?v=xZcKcX910d4&feature=youtu.be
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Offline Cut4fun .

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Re: Poulan 2250: Chain Keeps Coming Loose
« Reply #9 on: December 16, 2012, 03:24:54 pm »
What is the drive link of the chain?  What is the bar length and dl count listed on bar? 

I'm still betting overly stretched chain or wrong chain.

Looks like 18" on bar. Should be 62dl chain. Now count your dl's on your chain.  If thats different there you go.

 If not the chain is stretched or do what 3000 said. Use silver marker to outline bar mount to crankcase to see if movement or not.
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