spudulike

Is the exhaust outlet standard or pointing at the brake handle?

The grey plug colour is where the piston has overheated and the aluminium has vaporised and spattered on to the plug. This is the stage after being white (overheated). The piston has partially melted although the saw has continued to run. I would say that the melted aluminium has probably worked its way down to the main bearings. Typically this can cause the saws bottom end to make a "hollow" rumbling sound, I had the same on my 357. What do you need to do the job - experience or/and a decent dollop of engineering skills. The main difficulty is how you do the actual splitting of the cases - I did do a tutorial on a 660 some time ago on my "whats on your bench" thread. I have pics of what I used - a BIG G clamp, a splitter - donated by ADW (Many thanks) and a homemade splitter - two pieces of angle iron. Don't use a big hammer on it, a positive is that this machine is BIG and is therefore easier to get splitters in. Once you have all the bearings and crank in, the crank will feel tight so bash each crank end with a copper mallet to take any stress out and the crank will become much smoother to turn - like silk.

Should be "An Iron"🙄

In addition to my earlier post, a repaired seized saw should be pressure and vac tested, the carb overhauled and then tach tuned. You need to ensure that the reasons for the seize are eliminated otherwise it is likely to go pop again. These tests will also ensure the new seals are sealing well. On the running lean issue, are you seeing the idle racing, light plug colour, flat out revs too high?

Probably main bearings. The noise of bad main bearings resembles leaving the saw running on a concrete hard standing, a heavy rumble from the bottom end. With the top end off, the crank spinning should be super smooth when you rotate it holding on to the con rod with the piston not fitted. Possibly debris has made their way in to the main bearings and won't show as play in the crank....if you do fit new, ensure you "de-stress" the bearings by whacking the crank on both ends after putting the cases back together again.

I have burnt laburnum and can confirm that it didn't kill me👍not saying it isn't dangerous but burning it isn't like catching bullets in your teeth. A very heavy wood.

Shame you don't have a guy two miles down the road to sort them overnight.....good times👍You helped me get started in an indirect sort of way...thanks.

Looks like bamboo rhizomes to me. Dig them out and glyphosate any green bits that come up as the larger types are very invasive if I am correct.

Those screw in piston stoppers can damage the crown of the piston so the Stihl plastic "dog bone" one is generally the tool of choice for me but do have a modified spark plug for engines with the plug hole at the top of the cylinder - typically mowers. Rope does work well but you need to ensure the ports are covered by the piston before using it. To remove the busted bit of the piston stop...probably just shake the saw around, a torch and a pair of tweezers. If that doesn't work, try getting it out of the exhaust port. If that doesn't work then it is a cylinder removal...grrrrr.

Look at it as a relationship and see if you can get future loads of wood or do a bit of clearance on windblown etc. Just make sure both parties are happy at the end and the door is open for the future.

I thought these bee hotels were all Nobby bollox but was surprised my one was used so much and still is. Glad yours is becoming fully booked up👍

Blimey, how the other half live, must be a decent life up there👍Nice job BTW.

68 Guns, decent anthem from the 80s👍

Good luck with that, at £250-350 per hour and generally advising mediation with posdibly a neighbour with the computing power of an ameba or totally intransigent, it is all ball ache. Can't you either go off the deeds or just agree to get a mutually acceptable land surveyor to determine where the boundary is? Much cheaper.

Mmm, I know what you mean, apparently I am talking bollox and it can't happen...what do I know having had a fair number apart and owning a ported pop up piston 357 which rips your arm off....with the decomp valve pushed in on starting!! It never happens 🙄🙄🙄