Seeking advice regarding thinning chainsaw

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Running pretty clean up to then I wonder if it kicked up a roller bearing or piece of cage or clip? What kind of mix and how many run hours approx?
So the 572 is less responsive you are saying? Thats what I figured by looking at saw vids.
 
Not that this would have anything to do with the cracks in the piston (geeez!), but you are running your oiler on high with the 28" bar, right? 562 loves a 20" and 24", but the 28" will need all the oil it can get.
 
[QUOTE="Westboastfaller...What kind of mix and how many run hours approx?."[/QUOTE]

Husqvarna XP 50:1 2 Cycle Engine Synthetic Motor Oil

Don't know exact hours but over 200.

[QUOTE="So the 572 is less responsive you are saying?."[/QUOTE]

Just less torquey at initial acceleration. The 562 is just faster than any other saw I've used. 572 has good power throughout the whole range.
 
Not that this would have anything to do with the cracks in the piston (geeez!), but you are running your oiler on high with the 28" bar, right? 562 loves a 20" and 24", but the 28" will need all the oil it can get.

Good thing to check. Yes, oiler was set for bar and oil was being distributed just fine.
 
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