Chainsaw Repair

Let's start!!

This morning I started to disassemble the chainsaw.
My doubts were concrete,  the hand gaurd there is not and unfortunately for me all the parts of the brake mechanism are missing, I have only the naked cover.
The engine has a good compression, the pull start works properly (I have to replace the cord) and there is a good spark.
Obviously I did not try to turn on the engine but this things that make me quiet confident.

Cleaning condition are awful, there is a solid mix of oil and sawdust encrusted in every hidden part.
Air filter is in pretty good condition, was well mounted, it is not damaged and it hasn't holes or ruptures, this is good for the health of the engine.
I separated engine from tank assemble and I have started to clean them, the rubber silent blocks are good.
Also the fly wheel is good and there is not vanes broken. Fuel hoses to the carburetor are old and stiff and brokes trying to bend it, tank was absolutely dry.
Cylinder and muffler are encrusted, muffler have some rusty points.

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From this view don't seem so bad

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From this it's worse

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Removing flywheel

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Tank collect years of sawdust and oil...

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For the first coarse cleaning I use kerosene. It melts sludge and oil very well but leave on the parts a greasy layer.
The second run of fine cleaning it's performed by Arexons Fulcron which is concentrated grease remover.

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This is the chain side cover and... I did not remove any other parts, every parts of the brake mechanism it's missing.
This afternoon I visited my trusted chainsaw shop for buy gaskets and carburetor's membranes; he still had in warehouse a complete kit for Tillotson HS-236 but I did not find a cylinder gasket (no problem, I'll make one with the old ones as a template and gasket's sheet).
For the brake assemble there aren't spare parts available and, as you rightly said, the actual 6800 differs precisely for the brake.
I talked also with the mechanic at the shop, who is old family friend (he has been working there for at least 30 years) and he told me that he will looking for. They have a warehouse of used items and parts, he is sure that there are something about Dolmar Sachs but he do not remember what. Finger crossed!!

In the next days I will continue the work.