I'll post this here in chainsaws, since it will apply to the new MS500 chainsaw.
I just recently had a TS500i that was a bit if a head scratcher, and finally tracked down why it was suffering significant power loss after about a full minute of cutting.
I've never had a single issue with one of...
I once forgot to oil the lower rod bearing on a Husqvarna K760, and it was bone dry during first startup.
It made a "SCREETCH!!" noise after about two seconds, and a poof; a white puff of smoke came out of the muffler. Luckily I have spares, but it still cost me an hour to swap out.....