High Quality Chainsaw Bars Husqvarna Toys Hockfire Saws

What oil is best? and what ratio?

Mastermind

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Thanks for the info.
I'm not 100% sure this is oil related at this point....but I think it is.

From an email with the owner.

"This past weekend while working on a big Fir tree, the saw developed, what seems to me, a slight lean condition. (Slightly higher idle than normal) It's also a *b-word to start after cutting a slab or 2. I gave up, packed my *s-word and went home."

The dino oil, plus the non-adjustable carb while milling, seems like a recipe for disaster.
 

huskihl

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Carbon coming down from the combustion chamber dome?
I was looking at the squiggly pattern at the top of the plating. I only ever see that on AM cylinders though. But the way cylinders increase and decrease in bore size up by the squish band I thought maybe it was too tight up there
 

Mastermind

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Could also be too tight of ring end gap. I’ve seen .011” grow and snag a 9010 exhaust roof
Could possibly be the ring of death. Something is going on up there by the squish band
I'll take a good look tomorrow Kevin.

Got busy today with other stuffs.
 
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