Stihl MS 193T Dies under load.

[MrClark]

I have an MS193T that I can bring to a smooth idle. But when I start a cut, it looses power. It acts just like a Husky I had that I was told by the dealer it had a scratched Cylinder wall.
No idea how that happened. I'm burning the Stihl Synthetic oil with premium gas. I clean my saws after heavy use. Looking for a Cylinder / Piston replacement Kit. I keep coming up with the MS 192t kits. Recommendations? Thoughts on Cause?
Help Appreciated.
MRC

 

[dmb2613]

most likely just the fuel filter or hose

 

[Wood Doctor]

Before you buy any rebuild kit, check the compression. If it's over 140 psi, that's not your problem.

 

[lehman live edge slab]

Is the saw all stock or has the muffler been messed with and not had a proper retune so it isn’t too lean?
Other wise if stock and it still has the exhaust screen that could be plugged also if it has some hours on it,
Could also be a fuel line, filter and carb rebuild is in order. Hard to narrow down by the given symptoms could be many things but usually if it idles well but won’t accelerate it isn’t the piston and rings.

 

[MrClark]

Is the saw all stock or has the muffler been messed with and not had a proper retune so it isn’t too lean?
Other wise if stock and it still has the exhaust screen that could be plugged also if it has some hours on it,
Could also be a fuel line, filter and carb rebuild is in order. Hard to narrow down by the given symptoms could be many things but usually if it idles well but won’t accelerate it isn’t the piston and rings.

AHH! I should have clarified. It was 1 year old when this started. Stock Saw. (Naturally Warranty was up just before this started.) It looses power under load.
Once warmed up, (Which takes a good 10 to 20 seconds of putt putt spirt) it accelerates from idle with a slight lag.
But touch anything with the chain spinning a n d, , , I t S l o w s R i g h t D o w n...
I did clean the spark arrestor screen and that was a notable difference when not under load.

 

[angelo c]

Have a look at the clutch/springs....sometimes they won't let the shoes grab the drum

 

[lehman live edge slab]

Sounds like it’s lean as usual for an epa saw, rebuild carb and trim limiters so you can richen it up some. But first things first pull the muffler off and take a look at cylinder and piston if no scuffing then go for the carb.