Chainsaw Repair

Have you checked your fuel line and filter? When you say 'bogs out' is the saw starved for fuel or flooding? If it is starving for fuel, perhaps the filter is not the correct one or it has become disconnected from the line, causing the line not to seek the lowest point in the tank when in the bar-down position. If ir is flooding the most likely it is the carb or impulse.

Have a look here:

http://chainsawrepair.createaforum.com/ported-saws/where-to-begin-when-you-saw-does-not-run-right/msg41282/#new

How long have you had the saw? Was it new or used, might try cleaning the carburetor and put a complete kit in it. Needle may be worn, or not set correctly.

The 2054 is fixed,,,, I think. Where the the vent pipe comes out of gas tank into the carb box,,,,,the vent line was off the pipe. It had been shortened and the cover screw on the right side must have hit it and it came off. While I had the cover off and the hose off I turned the saw over and gas run out of the pipe. With the saw inverted the gas would run right into the breather mounted into the top of the cover.
   I have put a new line on the vent pipe and the saw is working good. I will take it to the woods and put a couple of tanks through it. Then I will know for sure.

    Good talking with you.

It is very easy for a person who works with saws daily to take a step up in saw performance. Back in the day I owned 3 254xps and had great luck with them, all around good saw. I sold all 3 in working order a couple  years ago after I bought a 261ms. Just couldn't take them to the woods after running the 261. I expect the 2054 is about the same saw as 254. I have also switched to 18" bars on my two bigger saws. They happened to come with 18"bars and I really like them. The 2054 has a 15" bar. If anyone has never tried the 261 they will be pleasantly surprised by the balance, lightness and speed of this saw.  I have tried 026, 260, 361,362 and none of these saws impressed me. I am not a stihl man but I like the 261.

I will give one another try, maybe, someday. The one I tried was new out of the box. Sthil had given two saws away for prizes in a rookie woodsmens competition. Teenage brothers won the 2 saws, 1st prize was 362 and 2nd was the 261. Teenage boys would rather use there dad's saws and wanted cash for the prize saws to spend on girls. I bought the 261. Good right out of the box. The 261 is by far the best saw for me and the cutting I do. My back is not as young as it use to be!!!!!!!!!!