Husqvarna chainsaw Help Needed

First let me say Hi to all since I am new to this forum. I am not a small engine repair expert, I have worked on and repaired things for myself and friend all my life. I have one now that leaves me scratching my head. My neighbor asked if I would look at his Husqvarna 141 chainsaw saying it would not start. I have check everything and it will not start. Hear is a list of what I have checked and done.
Checked to see if plug was firing, it was but replaced it anyway and is still firing.
Removed and cleaned the carburetor, still would not start, installed a new one still would not start.
Replaced the fuel line, carburetor is getting fuel
Found the impulse tube was bad replaced it still would not start.
Checked the compression with throttle wide open it was 115 and pressure holds.
Removed the muffler, cylinder and piston not scared looks good same from carb side.
Thinking ring my be stuck because I found carbine build up on the piston, soaked for 24 hours did not help
Checked the on and off switch works fine disconnected it anyway still would not start.

I am at a total loss, it has now become a challenge for me.
Next step is remove the cylinder and piston unless anyone out there can offer me some advice.

Help is needed open to any suggestions.

Thurman

Medic21 said:

That is on the very low, possible not enough compression. 125 is the low end of normal.

My first thought was buy a Stihl .

The other thing is the crank seals, vac test it.

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I thought that might be the problem, what to get some other ideals before I went through that trouble

dougand3 said:

I agree with marginal compression. Try a tsp of fuel in the plug hole and see if you can get a burp, maybe 2 sec run. If no joy, pull the jug and examine P, C & R. May only need P&R - cheap at $8. Pay attn to 40mm vs 38mm.

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I tried the fuel in the cylinder and it would not fire, but I have not check the crank seals will work on that today.

dougand3 said:

I agree with marginal compression. Try a tsp of fuel in the plug hole and see if you can get a burp, maybe 2 sec run. If no joy, pull the jug and examine P, C & R. May only need P&R - cheap at $8. Pay attn to 40mm vs 38mm.

Click to expand...

This saw was built in 2003 according to the ser#, from what I can tell it takes the 40mm is there a way to verify that. By the time I finish this project the saw will be like new. And yes I agree get a stihl that's what I have myself never gave me a problem over 30 years old now.