Hi,
So I have been fighting with my Stihl MS192T for a few years now with a bogging down after using it for about 10-15 minutes. If I use it for a quick clean up it works fine, only if I used it for a longer period of time.
Well yesterday, I think I got it figured out. The fuel tank vent was mostly clogged. After taking it out, and opening it up and giving it a good cleaning, it gave me no trouble yesterday.
One of the symptoms was after making a cut, I would let it idle down and it would slowly speed down and then die. If I pulled it, it would not start unless I gave it some choke. Hmm, I said to myself, must be a carb issue. So I took the carb apart, looked fine, cleaned it anyways, same symptoms.
The diaphragm was a little stiff, not too bad, but certainly not new flexible, so I ordered a carb kit. The saw ran better, but still the same problem. Now I was getting angry at the saw!
I started to look a little deeper, so I pulled the muffler to look for carbon and a scored piston. Nope, no problems there. I took the intake boot off to look for rips, nope no problem there either. I looked at the fuel lines, no cracks. I blew out the fuel filter, no problems there either.
So after all this nonsense, it appears that the the fuel tank vent was to blame, not sure how I missed looking at that earlier. Anyways just wanted to pass this along, maybe someone else can use this with your troubleshooting tips.
The saw is running good now, with the minor aggravation of the fuel cap leaking. I tell you what, these goofy flip-top caps are the dumbest thing that Stihl has ever come up with. I have ordered up a replacement set to fix this. I also had to replace a cap on my backpack blower, as it got real hard to turn. I think the plastic swelled, possibly from ethanol, who knows, but I do like to blame ethanol whenever I can
The new cap has been on the blower a few years now with no problems.
Regards,
Tim in Mass
So I have been fighting with my Stihl MS192T for a few years now with a bogging down after using it for about 10-15 minutes. If I use it for a quick clean up it works fine, only if I used it for a longer period of time.
Well yesterday, I think I got it figured out. The fuel tank vent was mostly clogged. After taking it out, and opening it up and giving it a good cleaning, it gave me no trouble yesterday.
One of the symptoms was after making a cut, I would let it idle down and it would slowly speed down and then die. If I pulled it, it would not start unless I gave it some choke. Hmm, I said to myself, must be a carb issue. So I took the carb apart, looked fine, cleaned it anyways, same symptoms.
The diaphragm was a little stiff, not too bad, but certainly not new flexible, so I ordered a carb kit. The saw ran better, but still the same problem. Now I was getting angry at the saw!
I started to look a little deeper, so I pulled the muffler to look for carbon and a scored piston. Nope, no problems there. I took the intake boot off to look for rips, nope no problem there either. I looked at the fuel lines, no cracks. I blew out the fuel filter, no problems there either.
So after all this nonsense, it appears that the the fuel tank vent was to blame, not sure how I missed looking at that earlier. Anyways just wanted to pass this along, maybe someone else can use this with your troubleshooting tips.
The saw is running good now, with the minor aggravation of the fuel cap leaking. I tell you what, these goofy flip-top caps are the dumbest thing that Stihl has ever come up with. I have ordered up a replacement set to fix this. I also had to replace a cap on my backpack blower, as it got real hard to turn. I think the plastic swelled, possibly from ethanol, who knows, but I do like to blame ethanol whenever I can
The new cap has been on the blower a few years now with no problems.
Regards,
Tim in Mass
