Chainsaw Repair

I run mod saws everyday , the more timber I put in the mill the more money I make .

Overheating rather is the effect of bad cooling, due to restricted air flow?

Got my 562xp back today from getting a new carburator, used it some and it's still about the same if you work it hard it's hard to start, I'm thinking of getting a different saw.
They gave me a different 562xp to use for a week while mine was getting fixed, I don't know how many hours were on that saw but pretty sure it's a lot, the cylinder fins are blue from I suspect being over heated over and over, the front of the muffler is sort of caved in I suspect that's also from over heating caused by the auto tune system.

Muffler caved in is caused by jamming it into wood, my old 346s' are that way. Also, AT does not cause these saws to run hot.

I'm not sold on the new AT technology, but my 562 is over 3 years old and no problems at all.

You can blame the EPA for the strato charge design & choked up muffler. I've been running saws for over 30 years and am impressed with 562. Like I said, mines been a very good saw... Still like a ported 357xp better though. 

Well you can add a deflector on the side of the muffler to add another port and free up the flow or like I did on a buddies 562 and cut the muffler in half pull out the baffle and enlarge the existing outlet then braze or weld back together.
http://chainsawrepair.createaforum.com/ported-saws/husqvarna-288-muffler-deflector/50/
The link above has some good info on different deflectors and the husqvarna part number. EGT heat and air temp Heat are two different things. These motors stock build a fair amount of heat from EGT. The muffler mod will make them a bit louder but will help on the internal heat of the motor. Plus in helps on the overall air flow of the motor.