Climbing Saw Bogs Down

Fatcord

Fatcord

I have had the same problem with 3 climbing saws one of which was new. Two saws are stihl 200, the other one is a 192 which is dead now. They all have done the same thing, when you start them if you squeeze the throttle it will bog down then when it gets going after cutting it idles up then dies. What is up I have taken them to the stihl dealer and they cant fix them. I have put carb kits in them and keep in mind that one was totally new. I just bought a hedge trimmer and it does the same thing.
 
It does sound like you need to adjust the carb. My 192 did the exact same thing and I fixed it by adjusting the carb according to the manual. Also try spraying some Seafome in the carburetor and gas tank. It helps dissolve the junk that gets trapped in the tiny jets.

Since they keep putting ethanol in the fuel these days it absorbs the moisture from the air and ruins the power.

good luck, Caleb
 
Yes. I have tuned the carb, installed kits, new fuel filters, plugs, checked the intake boot for leaks and even taken them to the stihl dealer. No success. My 192 did it from new and just bought a stihl hedge trimmer that does the same thing. Never had this problem with my bigger stihls.
 
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Yes. I have tuned the carb, installed kits, new fuel filters, plugs, checked the intake boot for leaks and even taken them to the stihl dealer. No success. My 192 did it from new and just bought a stihl hedge trimmer that does the same thing. Never had this problem with my bigger stihls.

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I know you changed the plugs, etc., etc., but here's a situation that happened to me a several of years ago. I put it out here, FWIW, as a reminder: "You DON'T always get what you pay for."

I had a 360pro that was exhibiting the same problems you describe. I, too, went through the same steps you did including swapping out the plug ... NOTHING. So, I went through it again ... still NOTHING - lastly changed out what I thought was a 'good' plug. <u>Bang, all better.</u> Apparently, I had gotten a bad run of plugs.

In another incident, I had rebuilt a carb and (unknown to me) one of the gaskets was missing a hole. And, the engine wouldn't run. After re-inspecting my work and the parts, somehow I noticed the missing hole. So, I punched a hole in the new gasket and ... <u>Bang, all better.</u>

So ... the moral is ... just because you did all the right things doesn't mean the parts manufacturer(s) did. As my father-in-law used to say: "If you've fixed everything that could be wrong ... fix what can't possibly be wrong!" Saved my butt more than once.

Best of luck ... "Ain't nothin' like luck!."
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The fact that several pieces of equipment show the same symptoms has me thinking there is common denominator. Have you poured some of the fuel you are using in a glass jar to check for water? Struggling to get to WOT and surging and dieing are often signs of an air leak but with all the equipment acting up I would look at the things they share in common. The idling up and dieing is a sympton of lean running usually caused by air leaks or lack of fuel flow.
 
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The fact that several pieces of equipment show the same symptoms has me thinking there is common denominator. ...

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GOOD POINT! It reminded me of another strange problem that struck several engines, when I first moved 'back-in-the-woods'.

... Anyway, there was some small indigenous wasp that would build a little mud nest in any small hole. I found several small engine exhaust pipes 'mudded' shut and some partly closed. I even found a entire 1/4'' socket set completely filled with mud and larvae. It didn't take long - only a day or two.

There's another local small wasp that lays eggs in carpenter bee holes and stuffs pine needles in the holes to keep the bees out ... I've found pine needles stuffed in small exhaust pipes, too.

I now keep a wood plug in any small exhaust - PITA but it works. LOL

... just another thing to check - exhaust/muffler
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... Have you poured some of the fuel you are using in a glass jar to check for water? ...

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And, I agree, always good to check your fuel quality.
 
I always use the stihl 2.5 gal mix. I am thinking it may be an air leak, if it is i havent found it yet. It cant be the fuel I have 4 other stihls that run great on the same fuel. I will change out the plugs again.
 
I had a similar problem to what is happening with your saws. My problem was that my saw was boggin out and losing power everytime I squeezed the throttle and the reason behind my problem was that I used bad gas, this could be the case with your saws too. Make sure you you use fresh gas/oil mix. Gas/oil mix is only good for about 30-45 days so if you have gas longer than that you might as well get rid of it. Hopefully this will help you out if this is the problem in your case.
 
I would pour some fuel in a glass to be sure but one other thing to check is the fuel lines themselves. Check to see if they are gummy and stick together. Sometimes at WOT the lines will stick together and limit fuel. A quick check for an air leak is to spray a small amount of starting fluid around the various components and see if the saw idles up.
 
I had the same problem with my ms 200 t. I bought it brand new from the dealer and remember them saying when I bought it “ we are just trying to dial it in”. I took I home and it ran like sh1te. It Would not idle and if you gave it gas it would die, Then out of no where it would rev really fast. I had it checked out and they adjusted the settings, but when I took it home again it did the same thing. The guys I buy my saws from are awesome so they said they would fix it right this time. They said they are going to put in a new carb. I’ll let you know how my saw turns out when I pick it up this week. My thought is that Stihl just put out a batch of bad saws
 
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I had the same problem with my ms 200 t. I bought it brand new from the dealer and remember them saying when I bought it “ we are just trying to dial it in”. I took I home and it ran like sh1te. It Would not idle and if you gave it gas it would die, Then out of no where it would rev really fast. I had it checked out and they adjusted the settings, but when I took it home again it did the same thing. The guys I buy my saws from are awesome so they said they would fix it right this time. They said they are going to put in a new carb. I’ll let you know how my saw turns out when I pick it up this week. My thought is that Stihl just put out a batch of bad saws

[/ QUOTE ]I just bought a new carb, funny you mention that. i will let you know how it works.
 
There are something like 14 different carbs for the 200T IIRC. Accelerator pump fails and as soon as you give it throttle they fall on their face. Not a cheap carb either.
 
Just replaced the carb,did a little adjusting and it runs like new. What makes em get this way I dont know. I am a pretty good mechanic if I say so myself. I am a man of genius just like the commercial says. LOL
 
same thing just happened to me and sure enough it was an air leak. heard the new 201 is a bit iffy. I'm trying to make my 200 last as long as I can
 
I am on my third stihl top handle, couple 020's and now 200t. Had to do carb kit and the works like you did. And it still acts funny but cuts great at full throttle.

Its weird but I keep the adjusting screw driver with me at all times and just want to work it to the bitter end.
its like its got mind of its own. Seeems to like the cool mornings fine.

Last step well be full out pwr wash. MB that will do it.
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