McCulloch Chain Saws

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Started taking apart the McCulloch carb... unchartered waters. It's thankfully not very dirty inside, just old stale gas and oil residue.
Wasn't there a thread about working on these flatback carbs?

Edit: I found the link to Mark's Mac carb thread. Time to get reading....

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I was able to watch the video, I see what you mean about the revving at the end of the video.

How long has it been since a carb rebuild? I wonder if your fuel pump diaphragm could be getting a little tired and leaning it out? Or metering diaphragm getting stiff.

You'll probably get plenty of advice to have a pressure test done on the crankcase, which I couldn't disagree with.
 
I was able to watch the video, I see what you mean about the revving at the end of the video.

How long has it been since a carb rebuild? I wonder if your fuel pump diaphragm could be getting a little tired and leaning it out? Or metering diaphragm getting stiff.

You'll probably get plenty of advice to have a pressure test done on the crankcase, which I couldn't disagree with.
As far as I know this saw has never been messed with and has been retired until a good refresh has been done. My wife says she never gets tired of watching this tree hit the ground. Thanks for the reply!!!
 
As far as I know this saw has never been messed with and has been retired until a good refresh has been done. My wife says she never gets tired of watching this tree hit the ground. Thanks for the reply!!!
That's a wise idea, the last thing you want to do is burn up a 125cc McCulloch!

Keep us posted.
 

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