2025 Husqvarna 545 Mark II
Model Number: 545 Mark II
Serial Number: HUSQVARNA 545 Mark II - 967 69 06‑28
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.
Features
Excellent cooling capacity for a longer engine life: Our new cooling system is optimised in every detail to give you a reliable chainsaw for any situation.
AutoTune: AutoTune 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 crankcase: Sturdily built crankcase withstands high rpms and tough professional use, ensuring a long service life.
Smart Start® Technology: Specially-designed engine and starter for easy and fast starting with minimum effort
Snap-Lock Cylinder Cover: Saves time when changing spark plugs and cleaning.
Fuel Indicator: Transparent fuel indicator makes it easy to check fuel level
Retained bar nuts: The retaining function prevents loosing the bar nuts.
Quick-Release Air Filter: Easily remove and replace the filter after cleaning
Retained starter screws: A retaining function prevents the accidental loss of the screws holding the starter.
Flip-Up Fuel Cap: Easy to open and secures firmly, even when wearing thick gloves
LowVib® Technology: Dampeners between the engine and chassis significantly reduce vibrations so you can work more comfortably
Felling sight to last a lifetime: Having 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™ Technology: Centrifugal air cleaning system expels larger dust and debris particles before they reach the air filter to help improve engine life
Adjustable Oil Pump: Customize and control oil flow to meet any need
Easy to start: Combined start/stop switch and fuel pump make the saw very easy to start.
Side-Mounted Chain Tensioner: Easier access to chain tensioning device.
Slimmed-down design: Low, slender saw body makes the chainsaw easy and convenient to handle in any situation.
Powerful and Efficient X-TORQ® Engine: X-Torq® engines deliver a great power and torque thanks to highly efficient combustion.
Three-Piece Crankshaft: Forged three-piece crankshaft delivers maximum durability for even the toughest of jobs
Engine
Chain speed at max power: 62.7 fts
Cylinder displacement: 50.1 cm³
Output shaft power1: 3.6 hp
Torque, max.: 2.95 Nm
Torque, max. at rpm: 7,200 rpm
Clutch engagement speed (±120): 3,900 rpm
Electrode gap: 0.02 in
Idling speed: 2,800 rpm
Ignition module air gap: 0.01 in
Maximum power speed: 9,900 rpm
Oil pump type: Adjustable flow, no flow at idle
Spark Plug: NGK CMR6H
Equipment
Recommended bar length, min: 13 in
Pitch: .325"
Recommended bar length, max: 20 in
Chain type: SP33G
Bar length: 45 cm
Bar length (inch): 18 in
Sprocket type: Rim 7
Gauge: .050"
Dimensions
Weight (excl. cutting equipment): 11.7 lb
Sound and noise
Sound pressure level at operators ear: 106 dB(A)
Sound power level, guaranteed (LWA): 115 dB(A)
Sound power level, measured: 113 dB(A)
Vibration
Equivalent vibration level (ahv, eq) rear handle: 4.6 m/s²
Equivalent vibration level (ahv, eq) front handle: 4 m/s²
Lubricant
Oil tank volume: 0.68 US pint
Lubricant type (Engine): Husqvarna 2 stroke or equiv. at 50:1
Emission
Exhaust emissions (CO2 EU V)2: 844 g/kWh
Model Number: 545 Mark II
Serial Number: HUSQVARNA 545 Mark II - 967 69 06‑28
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.
Features
Excellent cooling capacity for a longer engine life: Our new cooling system is optimised in every detail to give you a reliable chainsaw for any situation.
AutoTune: AutoTune 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 crankcase: Sturdily built crankcase withstands high rpms and tough professional use, ensuring a long service life.
Smart Start® Technology: Specially-designed engine and starter for easy and fast starting with minimum effort
Snap-Lock Cylinder Cover: Saves time when changing spark plugs and cleaning.
Fuel Indicator: Transparent fuel indicator makes it easy to check fuel level
Retained bar nuts: The retaining function prevents loosing the bar nuts.
Quick-Release Air Filter: Easily remove and replace the filter after cleaning
Retained starter screws: A retaining function prevents the accidental loss of the screws holding the starter.
Flip-Up Fuel Cap: Easy to open and secures firmly, even when wearing thick gloves
LowVib® Technology: Dampeners between the engine and chassis significantly reduce vibrations so you can work more comfortably
Felling sight to last a lifetime: Having 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™ Technology: Centrifugal air cleaning system expels larger dust and debris particles before they reach the air filter to help improve engine life
Adjustable Oil Pump: Customize and control oil flow to meet any need
Easy to start: Combined start/stop switch and fuel pump make the saw very easy to start.
Side-Mounted Chain Tensioner: Easier access to chain tensioning device.
Slimmed-down design: Low, slender saw body makes the chainsaw easy and convenient to handle in any situation.
Powerful and Efficient X-TORQ® Engine: X-Torq® engines deliver a great power and torque thanks to highly efficient combustion.
Three-Piece Crankshaft: Forged three-piece crankshaft delivers maximum durability for even the toughest of jobs
Engine
Chain speed at max power: 62.7 fts
Cylinder displacement: 50.1 cm³
Output shaft power1: 3.6 hp
Torque, max.: 2.95 Nm
Torque, max. at rpm: 7,200 rpm
Clutch engagement speed (±120): 3,900 rpm
Electrode gap: 0.02 in
Idling speed: 2,800 rpm
Ignition module air gap: 0.01 in
Maximum power speed: 9,900 rpm
Oil pump type: Adjustable flow, no flow at idle
Spark Plug: NGK CMR6H
Equipment
Recommended bar length, min: 13 in
Pitch: .325"
Recommended bar length, max: 20 in
Chain type: SP33G
Bar length: 45 cm
Bar length (inch): 18 in
Sprocket type: Rim 7
Gauge: .050"
Dimensions
Weight (excl. cutting equipment): 11.7 lb
Sound and noise
Sound pressure level at operators ear: 106 dB(A)
Sound power level, guaranteed (LWA): 115 dB(A)
Sound power level, measured: 113 dB(A)
Vibration
Equivalent vibration level (ahv, eq) rear handle: 4.6 m/s²
Equivalent vibration level (ahv, eq) front handle: 4 m/s²
Lubricant
Oil tank volume: 0.68 US pint
Lubricant type (Engine): Husqvarna 2 stroke or equiv. at 50:1
Emission
Exhaust emissions (CO2 EU V)2: 844 g/kWh