Echo CS-440 Clutch

[CoolGarage]

I have an Echo CS-440. It became virtually impossible to pull the starter rope. Based on past experience, I was thinking it is the clutch. Bar and chain removed, same issue. I removed the spark plug and the cord pulls very easily. Seems to me that if it was the clutch that the issue would remain even with the plug out. Any thoughts on what the issue could be? Thank you.

 

[Marine-piper]

Does the chain move when you pull the cord?

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[Marine-piper]

Hey coolgarage, take a look at a similar post about the very same issue.
It appears that the saw is difficult to start but someone suggested giving it 1/8 ccw more fuel on the L needle.

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[CoolGarage]

No, the chain does not move.

 

[CoolGarage]

Cannot even pull the cord to get it started. Only pulls smoothly and all the way if plug is removed.

 

[Marine-piper]

You ever have it started?

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[Marine-piper]

Just a suggestion.

 

[CoolGarage]

Yes, used it a number of times in past years.

 

[Marine-piper]

Do you know if you have spark? Maybe it's starting to hydolock, hard to pull w/ plug in easy w/o. Just a suggestion.

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[CoolGarage]

There is zero fuel in it. If there was, still cannot start because you cannot pull the cord unless the spark plug is removed.

 

[Marine-piper]

I wish there was more I could offer, hopefully an Echo guy will be on soon.

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[CoolGarage]

Thank you for trying!!

 

[Marine-piper]

Good luck[emoji106]

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[pioneerguy600]

Its hydrolocking. Take out the plug, pull the saw over 20 - 30 times to expel the excess fuel in the crankcase, let it dry up a bit then try with the plug back in, too much fuel mix in the crankcase will stop them up dead. Most likely cause is a seeping past the metering valve seat carb.

 

[s sidewall]

Its hydrolocking. Take out the plug, pull the saw over 20 - 30 times to expel the excess fuel in the crankcase, let it dry up a bit then try with the plug back in, too much fuel mix in the crankcase will stop them up dead. Most likely cause is a seeping past the metering valve seat carb.

As he said but flip the saw over, get fuel out faster.

Steve Sidwell

 

[s sidewall]

Cylinder/piston look ok with muffler off?

Steve Sidwell

 

[CoolGarage]

I am trying this..............will be a little while. Not clear to me because if there is fluid in crankcase, what difference would the plug make? Sure there is no compression, but the fluid should still make it impossible to turn the crankshaft. Isn't that right??

 

[s sidewall]

With the plug out, pressure has somewhere to go, out the plug hole. Plug in, there is pressure with the piston going down, which forces what's in the crankcase to the cylinder where it get compressed even more. Can't compress with something like lot a of fuel.

Steve Sidwell

 

[CoolGarage]

Interesting. It has been upside down for 45 minutes after 50 pulls. No sign or smell of oil or gasoline. Maybe exhaust port plugged? I will take the muffler off and try to see. Thank you.

 

[s sidewall]

What did ya see with the muffler off, don't say a scored piston or a dirt dobbers nest.

Steve Sidwell