Amazon.com: NEOTEC 43cc Gas Chainsaw NH843 with 16 Inch Guide Bar and Chain, Power Chain Saw 2.95HP 2,2KW 16" Gasoline Chainsaws for Trees and Firewood Cutting, All Parts Compatible with Husqvarna 543XP :
Husqvarna 543XP Chainsaw 16" Professional - 43.1cc AutoTune Engine
Husqvarna 543XP Chainsaw
Amazon.com: NEOTEC 43cc Gas Chainsaw NH843 with 16 Inch Guide Bar and Chain, Power Chain Saw 2.95HP 2,2KW 16" Gasoline Chainsaws for Trees and Firewood Cutting, All Parts Compatible with Husqvarna 543XP :
Husqvarna 543xp review stock and ported - YouTube
User manual Husqvarna 543 XP (English - 312 pages)