A brand new saw, it should run perfect, wouldn't suspect anything else except a malfunction... something to consider. Just dogging the saw in can cause the clutch to slip and over a minute or two cause smoke to appear. A small amount of smoke wouldn't bother me, its exhaust, then holy hell, saws on fire..... I've cut a lot of wood and smoked a lot of clutches. Metal saws don't melt, but I've seen the old man light a smoke from a hot clutch and any old school logger will tell you... always carry a spare clutch with you. 14-16" wood doesn't seem like much, but dogging in can cause clutch slippage on just about any smaller saw. With the tollerance 's of today's saws and plastic parts/pieces, that heat is transferred to the plastic pretty fast. A slipping clutch builds a lot of heat, closed off by plastic... you get a heck of a mess fast. Chain moves easily after it was shut down, no brake left on...
Just thinking.