I have one of those early 550xps and had the hot start issues. This is what I did to fix it and it's never given me a moment's problem since.. I drilled a hole in the back of the top cover and screened it to allow intake air to bypass moving around the engine and getting preheated. I never...
Oh, it was the usual... I knew better but didn't think it would happen to me. Was cutting blowdown, knew it was likely to shift and surprise surprise, it did. 16" bar on my Husqvarna 550xp.
Just a flesh wound.. didn't get into the joint or sever any tendons/ligaments. Had my helmet/face shield on, but left the chaps in the box. Surely a wakeup call.
Blast from the past... I ended up with a Kubota BX-2660. 25.5hp 4wd diesel, 48" bucket, 60" belly mower, single 12" bottom plow, tiller, potato digger, little disc harrow, carryall for the 3pt. Loved that little machine. Sold it after the divorce.
It stems from the Jim Jones massacre where his followers were poisoned with kool aid and they so believed in their leader's message that they willingly chugged it down.