Author Topic: MS290 won't run slow  (Read 1192 times)

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Offline jvh24521

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Re: MS290 won't run slow
« Reply #20 on: March 11, 2014, 12:13:43 pm »
Low speed contributes to the gross fuel supply at full throttle as well. Richer low speed will = more on top too
Low speed contributes to the gross fuel supply at full throttle as well. Richer low speed will = more on top too

Yes, quite correct. I should have said I didn't think it would contribute as much as it does at higher speeds. But then it doesn't take much gas to run fast under no-load conditions, does it? Especially since the chain is off.

Apologies,

jh

Offline aclarke

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Re: MS290 won't run slow
« Reply #21 on: March 11, 2014, 12:20:56 pm »
Have you tried opening up the low speed needle to where the saw idled and accelerates well and cut wood with it? 

Offline jvh24521

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Re: MS290 won't run slow
« Reply #22 on: March 11, 2014, 12:53:11 pm »
Have you tried opening up the low speed needle to where the saw idled and accelerates well and cut wood with it? 

No, again you make a good point.

I was waiting for my wife to sharpen my chains before I put them back on. I hate to admit it but she has a lot more finesse with a file than I do. An old time wood cutter around here let her place her hand on top of his as he sharpened a chain and she picked right up on it. I can never get a chain as sharp as either of them. Too clumsy and heavy-handed I guess.

Nonetheless I should at least put a dull one on and try it out and will do so when I get home.

Thanks,

John

Offline Fish

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Re: MS290 won't run slow
« Reply #23 on: March 11, 2014, 03:03:40 pm »
You better watch them old time wood cutters......

Offline wisecobandit

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Re: MS290 won't run slow
« Reply #24 on: March 11, 2014, 03:20:03 pm »
Sounds like a leaking impulse line to me.  ;) Runs with rpm but no bottom end tickover or power.

Offline jvh24521

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Re: MS290 won't run slow
« Reply #25 on: March 11, 2014, 03:29:25 pm »
You better watch them old time wood cutters......

Dunno, I could use a night off...

 

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