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noted thanks. And I will follow the advice given. Not the first time @lone wolf helps me out here! :cheers:

Rechecking the engine...It seems really, really dry. Not a spot of lubrication to be seen. the crankshaft and bearings turn fine, but the entire thing just really screams lube.... Had a few hedge trimmers apart just yesterday, and the difference is nite and day in the engine/lubrication part...

I had it pressured up nicely, with soaby water on both sides. - nothing showed at all. It held pressure and vac. From the link you post, the overheating, lean, seems to be spot on. edit. And intake boot is intact, no sign of damage etc.

Tested the seals, vac and pressure, showed nothing - I will be replacing seals tho. Why not. Can't say if it was lean tune or not, carb wasn't set incorrectly (when I got it, can't speak for how it was run of course). Perhaps it's a case of, someone putting in strait gas, running it, and...

Agree, the inside seem dry, too dry. Plan was to find a piston and while at it, a set of oil seals, just to be sure. Taking these things apart takes some time, might as well do seals while at it. Thanks for the quick replies :cheers:

No film inside crankcase, and crank/shaft looks perfectly fine, as do bearings. Carb was H limited to 3/4 turn and L was exactly 1 turn, so no sign of issues there. oh and on a very positive note, the cylinder is very easy to clean up and should be perfectly fine to reuse. :happybanana:

pressure tested, no leaks. fuel in tank seemed fine, clear fresh etc. Dirt from muffler caused this?

Hey everyone Got a Stihl MS200 today. (No info on story or user etc) Wondering what caused this piston to look like this. Pictures to help identify the cause. 1. Piston exhaust side 2. Intake side 3. top 4. Muffler Comments are most welcomed!

This is really, really solid help and I wish that was something available in Denmark. People here are never ever that helpful, or trustful etc. Simply put awesome @oldbuzzard :bowdown::numberone:

I am just going to put in stihls own description here, translated as best I can, from Danish.... Note on the Stihl sticker/sign STIHL M-Tronic- version 1142 967 3301 A – M2.1 2.1 1140 967 3304 B – M3.0 3.0 If there is no such information on the sticker/sign, the M-tronic version is under 2.1...

Exactly, we need pictures to make sure nothing is sitting the wrong way, or missing etc. Throw em up once you are back home , then we can perhaps help you better. We need pictures where the carb, intake, etc are mounted. The black "box" on your carb, is the place Stihl places their data cable...

My reply here is not meant to be “wise guy attitude”, at all. Let's try to help you out on this issue. And on that note - Pictures REALLY help us, when we try to figure out what is going on. My story on Mtronic. I sold my own MS261 - a few years back. (it cut/ran better than any of my 260's...

Also clear picture of this part. See my picture.

Could you post some pictures of the carb, intake side etc, (without air filter on). Make sure we can see it all in there, also the choke/start levers etc. What year is the saw from?

Yeah exactly, I have one of those on my MS361 - switching to those on all Stihl saws now. They are three times more expensive than my old "non oem" Saegenspezi, but so be it.

Yep, same here, on the gas part. We don't have Stens parts here, sadly :(

I only use canned as well, but I have been using non oem filters, for 5 years no problems. I keep my tanks relatively clean too. I guess quality has gone down on the filters, they are from Saegenspezi, in Germany. They have solid aftermarket parts, but I will have to start using oem stihl...

Now, I normally do check up on the carb. But this time I didnt. Since the carb hasnt run for any worth while time and the fuel filter was brand new. But...lo and behold. In the picture I even removed a lil of the dirt clogging it up, it was completely clogged. Crazy, the fuel filters I have...

Hi everyone Been a while since I've had to come here for help. I have a Stihl MS260 - that runs and cuts, but I haven't been able to find a good solid setting on the carburator. The carburator is actually almost new, original walbro. The saw is from 2011 - not overly used, and in good...

hey everyone! Any chance I can find the IPL and SM for the Partner 650? Not sure which other saws it shares parts with etc. Thanks!