200T Throttle response

  • Thread starter Thread starter RANCHER
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RANCHER

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My 200T is starting to pause on me when keying up the throttle. Sort of a slight delayed
throttle response. It just started doing this.

What should I check or fix/replace?

Starts real well, runs great other than the throttle response... Used to get immediate response.
 
Always start with the plug. Easy to do & undo. Fixes a lot of such problems. Although, I had a BAD brand-new plug once ... drove me nuts ... er, nuttier:|:

:D
 
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  • #7
Have you pulled the muffler screen? I'd check that for clogs and the air filter.

The air filter is clean. I found that all the Stihls need to have their filters kept clean.
The spark arrestor, I didn't pull yet. But, if that was clogged I would think I would have
more serious problems; like starting! It starts good. Always has.

I'll check the screen today.
 
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  • #8
Sounds like the low end jet is slightly lean. Try turning the L screw counterclockwise about 1/8 turn.

Thanks Skwerl. I think that did the trick. I checked the spark arrestor and it was clean. I adjusted the "L" counterclockwise
about 1/8 turn. It seems to have fixed it. But then I noticed the idle was a little high. So, I adjusted the "LA" counterclockwise
about 1/8 turn and that seems to have lowered the idle a little so that the chain doesn't start to move.

We'll see how it behaves this afternoon in the woodpile. :)
 
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  • #9
You know, I seem to have pretty good luck with plugs. I find that I rarely need to replace them.
I clean and gap'm once-in-awhile. I think Skwerl had the solution this time!
 
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  • #10
Yeah. It seems to have fixed the problem. I like it when it's easy like this. I've had the saw
for about 3 or 4 years now and I've never touched the adjustment screws yet! The saw just
always ran perfectly.
 
As saws get older the diaphragm and other rubber parts in the carb can begin to harden and are not as flexible, so the carb won't pump quite as much fuel. I have a 17 year old weedeater which finally quit running altogether this year due to the carb not moving the fuel so I think it's about time to rebuild it. :lol:
 
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  • #12
As saws get older the diaphragm and other rubber parts in the carb can begin to harden and are not as flexible, so the carb won't pump quite as much fuel. I have a 17 year old weedeater which finally quit running altogether this year due to the carb not moving the fuel so I think it's about time to rebuild it. :lol:

I'm testing out this new additive. http://shop.bellperformance.com/pro...urce=Adwords&gclid=CNeIjePkvLACFagbQgodfCpdow

I'm hoping it will combat some of that kind of thing and save me rebuilding. Although it's not that big of a deal to rebuild a 2-cycle carb. So far I'm very impressed with this stuff.

I posted over in the gear section earlier.
 
Some of the older model Stihls can run year after year without adjustment, i find. I think it's a good feature. I haven't touched my 076, and it is like 25 years old. Just starts easily and keeps going as usual, even after a long term of no use. I may have never changed the diaphragms, but that doesn't seem possible. The 034/36 is that way too.
 
I stated before I got like 35 years out of both a PM 610 Mac and an S-25 Poulan before the carbs needed rebuilt .Even before ethanol that would be considered a long time .

FWIW although periodic replacement of the spark plug is a good idea very seldom do they go bad .
 
anybody have a clear diagram of the inside guts for the trigger? Mine sprung apart the other day while taking it apart...umm :|: 200T that is
 
I had that happen a few weeks ago too. It was my first time to have all that apart. The next time I have to work on that portion, I intend to snap a pic of each step, just to remember how all those little pieces go together. I got it all back together, but it took a couple of tries. I'd get it nearly together, then realize I left a part out.
 
But isn't it such a feeling of accomplishment when you DO get it all back together and the darn thing WORKS! :)
 
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