Best in class cutting capacity.
The second generation of Husqvarna’s 545 chainsaw is a 50cc unit that’s ready for your felling, limbing and bucking of small and midsize trees. Designed for professional forestry and tree care crews, this durable saw has improved power and a slimmed-down design. A host of innovative features guarantee comfortable and efficient operation, season after season.
Excellent cooling capacity for a longer engine lifeOur new cooling system is optimised in every detail to give you a reliable chainsaw for any situation. |
AutoTuneAutoTune gives optimal engine performance throughout automatic engine setting. No time spent on carburetor adjustments. It compensates for different fuels, altitude, humidity, temperature and clogged air filter. |
Magnesium crankcaseSturdily built crankcase withstands high rpms and tough professional use, ensuring a long service life. |
Smart Start®The engine and starter have been designed so the machine starts quickly with minimum effort. |
Snap-lock cylinder coverSaves time when changing spark plugs and cleaning. |
LowVib®System designed to reduce vibration levels to the operator, which lessens fatigue. |
Felling sight to last a lifetimeHaving a perfect sight is critical when using a chainsaw – so we made one that’s permanently molded into the chainsaw for long-lasting felling accuracy. |
Air Injection®Centrifugal air cleaning system removes larger dust and debris particles before reaching the air filter. This results in reduced air filter cleanings and improved engine life. |
Easy to startCombined start/stop switch and fuel pump make the saw very easy to start. |
Adjustable oil pumpAllows you to control oil flow depending on application and weather conditions. |
Visible fuel levelTransparent fuel indicator makes it easy to check fuel level. |
Retained bar nutsThe retaining function prevents loosing the bar nuts. |
Quick-release air filterFacilitates cleaning and replacement of the air filter. |
Retained starter screwsA retaining function prevents the accidental loss of the screws holding the starter. |
Flip-up tank capFlip-up fuel tank caps are easy to open and secure firmly, even when wearing thick winter gloves. |
Slimmed-down designLow, slender saw body makes the chainsaw easy and convenient to handle in any situation. |
X-Torq®The powerful and efficient X-Torq® engine cuts both engine emissions and fuel consumption, improving your working environment and saving you money at the gas pump. |
Three-piece crankshaftForged three-piece crankshaft for maximum durability for the toughest applications. |
Side-mounted chain tensionerEasier access to chain tensioning device. |
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Power output | 3.6 hp | 3.6 hp | 3.6 hp | 3.6 hp | 3.6 hp | 3.6 hp | 3.6 hp |
Cylinder displacement | 3.06 cu.inch | 3.06 cu.inch | 3.06 cu.inch | 3.06 cu.inch | 3.06 cu.inch | 3.06 cu.inch | 3.06 cu.inch |
Maximum power speed | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm | 9,900 rpm |
Idling speed | 2,800 rpm | 2,800 rpm | 2,800 rpm | 2,800 rpm | 2,800 rpm | 2,800 rpm | 2,800 rpm |
Torque, max. | 2.95 Nm | 2.95 Nm | 2.95 Nm | 2.95 Nm | 2.95 Nm | 2.95 Nm | 2.95 Nm |
Torque, max. at rpm | 7,200 rpm | 7,200 rpm | 7,200 rpm | 7,200 rpm | 7,200 rpm | 7,200 rpm | 7,200 rpm |
Clutch engagement speed (±120) | 3,900 rpm | 3,900 rpm | 3,900 rpm | 3,900 rpm | 3,900 rpm | 3,900 rpm | 3,900 rpm |
Fuel consumption | 432 g/kWh | 432 g/kWh | 432 g/kWh | 432 g/kWh | 432 g/kWh | 432 g/kWh | 432 g/kWh |
Fuel consumption | 2.6 lbs/h | 2.6 lbs/h | 2.6 lbs/h | 2.6 lbs/h | 2.6 lbs/h | 2.6 lbs/h | 2.6 lbs/h |
Spark plug | NGK CMR6H | NGK CMR6H | NGK CMR6H | NGK CMR6H | NGK CMR6H | NGK CMR6H | NGK CMR6H |
Electrode gap | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in | 0.02 in |
Ignition module air gap | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in | 0.01 in |
Oil pump type | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle | Adjustable flow, no flow at idle |
Exhaust emissions (CO2 EU V) | 844 g/kWh | 844 g/kWh | 844 g/kWh | 844 g/kWh | 844 g/kWh | 844 g/kWh | 844 g/kWh |
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Weight (excl. cutting equipment) | 11.7 lbs | 11.7 lbs | 11.7 lbs | 11.7 lbs | 11.7 lbs | 11.7 lbs | 11.7 lbs |
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Lubricant type | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | Husqvarna 2 stroke or equiv. at 50:1 | |||
Oil tank volume | 0.68 US pint | 0.68 US pint | 0.68 US pint | 0.68 US pint | 0.68 US pint | 0.68 US pint | 0.68 US pint |
Oil tank volume | 0.32 l | 0.32 l | 0.32 l | 0.32 l | 0.32 l | 0.32 l | 0.32 l |
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Sound power level, guaranteed (LWA) | 116 dB(A) | 116 dB(A) | 116 dB(A) | 116 dB(A) | 116 dB(A) | 116 dB(A) | 116 dB(A) |
Sound power level, measured | 114 dB(A) | 114 dB(A) | 114 dB(A) | 114 dB(A) | 114 dB(A) | 114 dB(A) | 114 dB(A) |
Sound pressure level at operators ear | 106 dB(A) | 106 dB(A) | 106 dB(A) | 106 dB(A) | 106 dB(A) | 106 dB(A) | 106 dB(A) |
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Bar length (inch) | 20 in | 16 in | 18 in | 20 in | 16 in | 18 in | 20 in |
Recommended bar length, min | 13 in | 13 in | 13 in | 13 in | 13 in | 13 in | 13 in |
Recommended bar length, max | 20 in | 20 in | 20 in | 20 in | 20 in | 20 in | 20 in |
Chain type | S35G | S35G | SP33G | SP33G | SP33G | SP33G | |
Pitch | .325" | .325" | .325" | .325" | .325" | .325" | .325" |
Sprocket type | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 | Rim 7 |
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Equivalent vibration level (ahv, eq) front handle | 3.6 m/s² | 3.6 m/s² | 3.6 m/s² | 3.6 m/s² | 3.6 m/s² | 3.6 m/s² | 3.6 m/s² |
Equivalent vibration level (ahv, eq) rear handle | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² | 4.1 m/s² |