Mate's husqy did a very similar thing very recently. He had to get in a new set of plastics, a muffler and some other minor bits that got cooked. His hand protected the handle, ha ha har. It didn't take very long from the front falling off to oh fark ow thats hot apparently.
I had an 026 that had an exhaust gas issue, the stock muffler or exhaust front was directing the exhaust gas out to the right and across the front right corner of the crankcase where the serial number is stamped. Ended up welding a little strip of sheet steel in front of the exhaust slot just to direct the hot gas back out to the front, which helped the smoking crankcase issue...
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