spudulike

I guess you have measured the crank diameter where the bearing runs compared to where it doesn't, inspected the crank surface it for pitting and checked the drum bearing surface for pitting and wear. I see you said the clutch has been replaced so that should discount this as the problem. Lubrication shouldn't be an issue as the grease tends to just fly out on the first run but wear in the components may well cause issues.

The issue may well be a cold flue...You can use other methods of heating the flue, a number of nightlights can do it, hair drier, fan heater etc. Our old house needed the first burn of the year to warm the flue and after that, it was fine unless left a couple of days. The chimney was unlined which probably added to it needing warming....is yours lined and back filled with vermiculite, ceramic liners or just open brick?

As ADW says, don't get too hung up on just item but do diagnose the issue you have. If the saw is flooding, it may be through excessive trying to start with the choke but as Stubby says, it may be that the needle valve is leaking. A tech would check the needle valve with a pop off gauge or Mityvac gauge. You wont have those but if you stick a piece of fuel line on the carb fuel connection and suck it then stick your tongue on it, it should hold vacuum and stick to your tongue. As ADW says, you may have had the piston seize or nip up and may have lost compression. A tech would use a compression tester and look for 150psi+ but without that, the experienced would "feel" the compression by pulling over the engine slowly and feeling the engine at TDC...it should give good resistance on the handle. The other failure may be the coil, you can test for this by taking the plug out, putting it in the HT cap, earthing it on the cylinder and pulling over the saw hard BUT, keep the spark AWAY from the plug hole as the vapour coming out of the hole can ignite...you do this once in your life before becoming aware that it is a very silly and dangerous thing to do, that and it takes all the hairs off your hands, arms, face and head if anywhere near the flame! It is unlikely the carb would immediately fail...the liveliness may have been from the saw running lean and it may have seized but a pic of the piston thorough the exhaust port would give an indication. Pulling the top end off would give another more detailed view. There are many people out there that "Swap parts", other people diagnose issues quickly and accurately spending customers £££ only on the parts that are actually needed!

Fade away and radiate...you could write a song with that!!

On the ones I have seen, a flat screwdriver. Get a bright torch and shine it down the hole and see what you have. The limit caps often don't let you get flat out revs down to an acceptable rpm once the saw is fully loosened up so these are often removed, the carb adjusted then refitted. The MS461 and 460 are common saws that need this

These and MS230s have carb adjustment holes at strange angles making adjustment not the easiest. The ones I have seen have had a limiter cap on the H screw but these machines have been manufactured since the dark ages (025) so have had a few build variations.

It may be that simple. As long as the saw isn't over-revving on the top end, picks up OK and idles plus no fuel is escaping....all is good....and use will show that. Fuel tanks often have positive pressure in them so it is possible the fuel in the tank got warm, expanded and caused a leak that vapourised the fuel. Just make sure the saw doesn't get used if the leak does come back....fuel vapour is very easy to ignite! Oh..check the chain brake works and the chain catcher is all OK...seen all sorts in my time!

If I was a dictator I would make it compulsory to study the riffs from bands such as UFO, Boston, Rush and ZZ Top.

L&S list the solenoid below but I have fitted the white kit version to MS201s and they have run fine. The black ones were the earlier ones. The issues seem, as you said, to come from fine particles getting in to the solenoid and the resulting fix was the orange finer fuel filter. You can sometimes catch and nick the O ring on the solenoid on fitting so it is worth using a small dab of 2T oil to lubricate it on fitting. It is worth pulling out the gauze strainer in the carb if you haven't already. They can get clogged or scummed up and if it drys, it can be difficult to see if it is clear or not. I had one once that looked clean but on pulling it, it had scum in the open areas doing a good job of blocking it. Solenoid Valve for Stihl MS201T-CM M-Tronic Chainsaw - 0000 120 5111 | L&S Engineers WWW.LSENGINEERS.CO.UK Solenoid Valve for Stihl FS460 Brushcutter Genuine Stihl Part. OEM No. 0000 120 5111 Suitable for the Following Applications: FR460 TC-EFM, FR460 TC-EM, FS360 C-EM, FS360 C-EM Z...

You could try getting in to 70s rock, buying the Mother of all sound systems and knocking yourself out on Zep and Purple....that should hide the annoying noise...pity the neighbours.... unless they like a bit of Rainbow, Gillan Band and Whitesnake!

It may be a ground or air source thermal heat pump or solar heated water pump....these things have a bit of a mind of their own. Or as others have said, Septic tank pumps etc. I usually cup my ears with my hands to get a bearing on spurious sounds...take it one step further, a decent directional microphone...one with a dish behind it and plug it in to a laptop with a sound package on it and see if you can identify the wavelength and direction of the sound.

Thanks for coming back and letting us know...many don't and just use the knowledge base and then piss off in to the distance. Glad it is sorted....good news.

I think your diagnosis gave him a mental illness!!

I am impressed that, at your age, you know how to turn it on

You can normally tell if the compression is low but taking the muffler off and looking at the piston may help to see if it is in good order. It is worth looking at the exhaust port for carbon and have seen the muffler baffle Carbons up on this model before so starting it without the exhaust may help. A working engine needs compression, fuel and spark. You have a spark, it needs to happen at the right time but it is unlikely to be out unless the flywheel key has sheared. Compression...you need 140 or over on most machines. Fuel...is the plug wet when you remove it? If you turn the engine upside down with the plug out and pull it over hard, do you get fuel spattering out of the hole? If the engine is dry, you could try inducting a bit of WD40 in to the engine through the carb to see if that makes the engine fire. Most issues are compression and fuel related. Because a part has been replaced doesn't always mean it has been done correctly!!

It will most likely be one of two things, the most likely is that the clutch drum needle bearing is this that worn, the end of the oiler arm has been worn off. If this is correct, you will need a new oiler arm, needle bearing and probably a new drum. If this isn't the case, you will need to fit a new carb solenoid....preferably the upgrade kit that includes the fuel filter.

Looks a bit pickled to me......agree with the above seeing as the walnuts are still on it!

The smoke is probably oil burning off the heated drum and clutch due to the slipping clutch...seen it before!

Are you saying the chain is spinning on idle? If so, you may have a worn or broken clutch spring. The chain stopping sounds like the clutch is slipping so possibly the clutch shoes have worn that much they are not gripping the drum sufficiently. It is also possible that something is stopping the shoes extending correctly under centrifugal force. You should check out the Clutch, drum and rim drive and check the clutch drum bearing whilst you are in there!

They probably come from the forests around Chernobyl!

Have been using ours for a couple of weeks....the wife says she was cold when it hit 27 degrees C in the living room

I think it is a Double Eagle 50....more info here: - Model Profile: DOUBLE EAGLE 50 WWW.ACRESINTERNET.COM

You couldn't make it up could you? Man has buggered mower, man fixes mower, man gets attacked by swarm of jaspers, man escapes but the mower takes a dive Glad you got it fixed and it looks like you survived the trauma.

If it is still not working after this, you get to the stage where you either swap out parts or you hope that if you take it to a dealer, the Mtronic software will tell you something that you have missed. The most likely issue is the carb followed by the coil but swapping parts out is expensive and generally a cop out! In my experience, issues like this have been caused by the solenoid or the wiring broken as I have explained and not had one that doesn't idle after investigating these two items. Unfortunately there isn't much left to add!

BTW...you really shouldn't change the idle screw setting, if the saw ran for most of it's life in a set position, it should't need changing. Running a saw with the impulse line off causes an air leak and can risk engine seizure although the Mtronic should compensate for this. Is the piston in decent order?