A lightweight, professional petrol chainsaw in the 40 cm³ class designed for tree care and thinning. The 540 XP® Mark III combines a compact 39.1 cm³ engine (1.9 kW) with easy starting, strong acceleration and a manoeuvrable chassis. It comes configured for a 14 in (35 cm) bar with a 3/8″ mini S93G chain, making it a reliable choice for productive work where agility and consistent performance matter. High cutting capacity Engine and drivetrain deliver strong, sustained cutting performance even on longer cuts, so you can maintain productivity during demanding thinning and tree-care tasks. AutoTune 3.0 — no carburettor fiddling The integrated AutoTune 3.0 keeps engine settings optimised for startability and performance in changing conditions, removing the need for manual carburettor adjustments on site. Reliable starts and durability Designed for easy cold and hot starts and built with retained starter screws and a retained bar nut to reduce the chance of losing small parts during service or in the field. Key specification Article ID 970793114 Power output 1.9 kW Cylinder displacement 39.1 cm³ Weight 4.1 kg Bar / blade / cutting length 35 cm Fuel tank 0.31 l Full specification Weight (excl. cutting equipment) 4.1 kg Product size height 24.7 cm Product size length 42.8 cm Product size width 22.6 cm Cylinder displacement (metric) 39.1 cm³ Output shaft power (metric) 1.9 kW Fuel tank volume (metric) 0.31 l Fuel Consumption 387 g/kWh Idling speed 3000 rpm Clutch engagement speed (±120) 4400 rpm Spark Plug NGK CMR7H Exhaust emissions (CO₂ EU V) 782 g/kWh Sound pressure level at operators ear (LpA) 102 dB(A) Sound power level, guaranteed (LWA) 113 dB(A) Packaging length 493 mm Packaging width 278 mm Packaging height 334 mm WEEE Classified No Equivalent vibration level (ahv, eq) rear handle 5.1 m/s² Chain speed at max power (m/s) (metric) 20 m/s Power/fuel type Gasoline Recommended bar length, min (metric) 30 cm Recommended bar length, max (metric) 40 cm Equivalent vibration level (ahv, eq) front handle 3.7 m/s² Chain pitch 3/8″ mini Chain type S93G Bar length (metric) 35 cm Bar length (inch) 14 in Spikes Mounted Nose type Sprocket nose Ignition module air gap (metric) 0.3 mm Cylinder stroke (metric) 31.1 mm Ignition module air gap (imperial) 0.01 in Cylinder stroke (imperial) 1.22 in Key features High cutting capacity New engine design offers plenty of grunt for peak performance even during longer cuts. The high cutting capacity makes the saw ideal for productive operation – even when using a longer guide bar. Always optimized Thanks to AutoTune 3.0, the engine settings are always optimized for maximum startability and performance in all conditions, keeping you going no matter the challenges. No need for manual carburetor adjustment. Felling sight to last a lifetime Perfect sight is critical when felling – so we made one that will outlast the chainsaw itself. Optimized saw body No protruding parts, a smooth underside, rounded starter cover and well-protected controls all make the saw easy to handle. Air Injection filters 98% of incoming dust Give you full working days with maintained performance and less wear on the engine. Connectivity ready Keep your saw and yourself up to date with Husqvarna’s digital services. Just plug in the optional Integrated Connectivity Device under the cover. Then you’re ready to connect and diagnose the engine. Flip up tank caps Easy to open and secure firmly, even when wearing thick winter gloves. LowVib® Effective anti-vibration dampeners absorb vibration, sparing the user’s arms and hands. Retained bar nut The retaining function prevents loosing the bar nut. Retained starter screws The retaining function prevents losing the screws holding the starter. Made for professional use Engineered for professional use, offering power, performance and durability for demanding tasks. Features Product video FAQs How many CC is a Husqvarna 540 XP® Mark III? The Husqvarna 540 XP® Mark III has an engine displacement of 40 cubic centimeters (CC). How much does a Husqvarna 540 XP® Mark III weigh? 4.1 kg excl. cutting equipment Is a Husqvarna 540 XP® Mark III a Pro saw? Yes, the Husqvarna 540 XP Mark III is a professional chainsaw in the 500-series. Built for demanding tree care and forestry work. It features a powerful 40cc X-Torq® engine, AutoTune™ 3.0 for optimal performance, and a lightweight, ergonomic design. With fast acceleration, high cutting capacity, and advanced filtration, it’s engineered for precision and durability in tough environments. How easy is it to start and tune the engine? The saw is designed for reliable cold and hot starts. AutoTune 3.0 continuously optimises engine settings, so you don’t need to adjust the carburettor manually — that helps maintain startability and performance across different fuel quality and environments. What bar lengths and chain type are recommended? Recommended bar length is 30–40 cm. The saw is supplied configured with a 14 in (35 cm) sprocket‑nose bar and a 3/8″ mini S93G chain. Check chain speed and approved bar lengths in the manual before fitting different sizes. What maintenance should I plan for in the field? Use the Air Injection system and easy‑access caps to reduce service frequency, but perform routine checks daily: chain condition and tension, bar and sprocket wear, fuel and chain oil levels. Keep retained screws and the retained bar nut secure. For full service intervals and authorised maintenance, follow the operator manual or contact an authorised Husqvarna service centre.
