Those are workers! 87cc , 6 hp run up to a 28" or 32 " bar . The XP is the professional grade in their line, depending on age , (well maybe not) your in Canada so if it's a Canadian saw its got the fully adjustable carb. even if it's a newer one, if it's good it should pop 125PSI + (IMO) on combustion, had its little brother a 262xp the finest saw I ever owned. Only drawback big saw gets heavy even as ergonomically designed for weight balance as it is. Pace yourself is all , put a full chisel chain on it and LOOK OUT LUMBER!!